AIRO Application Guide Protocols & Principles

alisun

Doc.#: MI-42-0005

Rev. 8

AIRO

SYSTEM

Application Guide

Protocols and Principles


Application Guide Protocols and Principles

MI-42-0005 Rev 8

Table of Contents

1 Scan and Reconstruction 4

1.1 Concept of Scan Protocols 4

1.2 Scan Modes 4

1.2.1 Sequential Scanning 4

Acquisition, Slice Collimation and Slice Width for Sequential Scanning Mode 4

Pitch 4

Kernels 4

1.2.2 Helical Scanning 5

Acquisition, Slice Collimation and Slice Width for Helical Mode 5

Pitch 5

Kernels 5

2 Dose Information 6

2.1 CTDIw and CTDIvol 6

2.2 kV and Effective mAs 7

2.3 Adjusting for Image Noise 7

2.4 Weight Adaptation (For Some Protocols) 7

3 Scan Protocols 8

3.1 Head, Sinus & Orbit Studies 8

Overview 8

Hints in General 8

Category Parameters 9

3.1.1 HeadHelical 10

3.1.2 HeadSeq 11

3.1.3 SinusHelical 12

3.1.4 SinusSeq 13

3.1.5 OrbitHelical 14

3.1.6 OrbitSeq 15

3.2 Shoulder 16

Overview 16

Hints in General 16

3.2.1 ShoulderHelical 17

3.2.2 ShoulderSeq 18

Page 2 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.3 Thorax (Chest) 19

Overview 19

Hints in General 19

3.3.1 ThoraxHelical 20

3.3.2 ThoraxSeq 21

3.4 Abdomen 22

Overview 22

Hints in General 22

3.4.1 AbdomenHelical 23

3.4.2 AbdomenSeq 24

3.5 Pelvis (Hip) 25

Overview 25

Hints in General 25

3.5.1 PelvisHelical 26

3.5.2 PelvisSeq 27

3.6 Spine 28

Overview 28

Hints in General 28

3.6.1 C-SpineHelical 29

3.6.2 C-SpineSeq 30

3.6.3 SpineHelical 31

3.6.4 SpineSeq 32

3.7 Extremities 33

Overview 33

Hints in General 33

3.7.1 ExtremitiesHelical 34

3.7.2 ExtremitiesSeq 35

3.8 Full Body/Newborn Body 36

Overview 36

Hints in General 36

3.8.1 Full Body/Neonate Body/Helical 37

3.8.2 Full Body/Neonate BodySeq 38

Page 3 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

1 Scan and Reconstruction

1.1 Concept of Scan Protocols

The scan protocols are defined according to body regions – Head, Shoulder, Thorax,

Abdomen, Pelvis, Spine, Extremities. In addition, there is a ‘full body’ region for

newborns.

The general concept is as follows: All protocols are standard helical modes. For example,

“Abdomen” means the helical mode for the abdomen.

1.2 Scan Modes

1.2.1 Sequential Scanning

This is an incremental, slice-by-slice imaging mode in which there is no table movement

during data acquisition. A minimum inter-scan delay in between each acquisition is required

to move the table to the next slice position

Acquisition, Slice Collimation and Slice Width for Sequential Scanning Mode

The AIRO has one fixed collimator and reconstruction slice width. It is:

Total Slice Gantry Movement

Slice Width

Collimation Between Acquisitions

32 x 1.06 = 33.92mm 31.92mm 1.0mm

Pitch

In AIRO Sequential Scanning CT:

Pitch factor = Gantry Movement Between Acquisitions/total slice collimation

Where the gantry movement between acquisitions is 33.92mm and total collimation is

33.92 mm at isocenter.

Therefore the AIRO Sequential Scanning Pitch Factor = 31.92/33.92 = 0.941

With the AIRO MobiCT-32, the slice collimation and gantry movement per acquisition are

fixed which results in a fixed pitch factor of 0.941 for all scan protocols.

The slice width is independent of pitch and for the AIRO the slice width is always set to

1.0mm.

Kernels

There are 3 set kernels for the AIRO: Sharp, Standard, and Soft.

Page 4 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

1.2.2 Helical Scanning

Helical scanning is a continuous volume imaging mode. The data acquisition and gantry

movement are performed simultaneously for the entire scan duration. A typical range can

be acquired in a single breath hold.

Acquisition, Slice Collimation and Slice Width for Helical Mode

The AIRO has one fixed collimator and reconstruction slice width. It is:

Total Slice Gantry Movement Per

Slice Width

Collimation

Rotation

32 x 1.06 = 33.92mm 48mm 1.0mm

Pitch

In AIRO Multislice CT:

Pitch factor = gantry movement per rotation/total slice collimation

Where the gantry movement per rotation is 48mm and total collimation is 33.92 mm at

isocenter.

Therefore the AIRO Pitch Factor = 48/33.92 = 1.415

With the AIRO MobiCT-32, the slice collimation and gantry movement per rotation are fixed

which results in a fixed pitch factor of 1.415 for all scan protocols.

The slice width is independent of pitch and for the AIRO the slice width is always set to

1.0mm.

Kernels

There are 3 set kernels for the AIRO: Sharp, Standard, and Soft.

Page 5 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

2 Dose Information

2.1 CTDIw and CTDIvol

The average dose in the scan plane is best described by the CTDIw for the selected scan

parameters. The CTDIw is measured in dedicated plastic phantoms – 16 cm diameter for

head and 32 cm diameter for body (as defined in IEC 60601 – 2 – 44). This dose index

gives a good estimation for the average dose applied in the scanned volume, as long as

the patient size is similar to the size of the respective dose phantoms.

Since the body size can be smaller or larger than 32 cm, the CTDIw value displayed can

deviate from the dose in the scanned volume.

The CTDIw definition and measurement are based on single axial scan modes. For clinical

scanning, i.e. scanning of entire volumes in patients, the average dose will also depend on

the table feed in between axial scans or the feed per rotation in helical scanning. The dose,

expressed as the CTDIw, must therefore be corrected by the Pitch Factor of the helical scan

or an axial scan series to describe the average dose in the scanned volume.

For this purpose the IEC defined the term “CTDIVol” in February 2009 for helical scans is

defined as:

CTDIvol = CTDIw/Pitch Factor

This dose number is displayed on the AIRO user interface for the selected scan

parameters.

CTDIvol based on the 32cm phantom can be converted to CTDIvol based on the 16cm

phantom as follows:

CTDIvol16 = CTDIvol32 / CTDIw16 * CTDIw32

Where CTDIw32 and CTDIw16 are CTDIw values for the appropriate kV level from the table

below.

kV CTDI w16 CTDI w32

80 14.44 10.39

100 25.81 18.47

120 38.17 28.63

Page 6 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

2.2 kV and Effective mAs

For AIRO sequential scan and helical scan protocols, the tube voltage is always set at a

constant 120kV and the indicated mAs is the effective mAs per image. The correlation

between tube current mA and effective mAs of helical scans on a Multislice CT scanner is

given by the following formula:

Effective mAs = mA * Rot Time / Pitch Factor

Pitch Factor = Gantry Feed per Rotation / (nrow x Slice Collimation)

Where slice collimation refers to the collimation of one detector row, and nrow is the

number of used detector rows.

In the case of sequential scanning during data acquisition given that the Pitch Factor = 1.

Effective mAs = mAs = mA * Rot Time

2.3 Adjusting for Image Noise

Scan Protocols are defined by patient anatomy to be scanned and the patient weight. The

reference patient is defined as a typical adult, 70 kg to 80 kg or 155 to 180 lbs. The

correlation between attenuation and tube current is defined by an analytical function which

adjusts the tube current based on patient weight and anatomy to be scanned. This function

may be adjusted to adapt the image quality (image noise) according to the diagnostic

requirements and the individual preference of the Radiologist.

2.4 Weight Adaptation (For Some Protocols)

Certain protocols use patient weight as an input to an automatic exposure control (AEC)

calculation of constant tube mA. The calculation is as follows:

Where:

Adapted mA = Standard mA * Patient Weight / Standard Patient Weight

• Standard mA = mA for body region in a 70 kg patient

• Standard Patient Weight = 70 kg

Page 7 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3 Scan Protocols

Two sets of scan protocols are presented – original and alternate. Alternate protocols were

introduced in AIRO software 1.3 and are recommended. These protocols provide optimized

dose for equivalent image quality. The original protocols are preserved for reference

purposes.

3.1 Head, Sinus & Orbit Studies

Overview

• Modes for routine helical and sequential scanning head, sinus and orbit studies

Hints in General

• Tomogram: Lateral, 496 mm.

• Patient positioning: Patient lying in supine position, arms resting along the body, secure

head well in the head holder, support lower legs.

• For all head studies, it is very important for image quality to position the patient in the

center of the scan field. Use the lateral laser beam to make sure that the patient is

positioned in the center.

• In order to optimize image quality versus radiation dose, scans are provided within a

maximum scan field of 256 mm with respect to the iso-center. Patient positioning has to

be performed accurately to ensure a centered location of the skull.

• An automatic bone correction and an advanced algorithm allows for improved head

image quality, without any additional post-processing.

Page 8 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

Category Parameters

Group

Identifier

Low Age

(years)

High Age

(years)

Weight

(kg) 5%

Weight (kg)

Typical

Weight

(kg) 95%

Height

(cm) 5%

Height (cm)

Typical

Pediatric Newborn 0 0.08 2.2 3.2 4.6 45.6 52.2 58.8

Pediatric Baby 0.08 1 4.5 8.2 12.8 49.6 65.1 80.6

Pediatric Toddler 1 3 9 12.7 17.3 68.9 81 93

Pediatric Pre-School 3 6 12.6 17.2 22.8 87.5 102 116.5

Pediatric School-aged 6 10 17.2 27.2 41 106.6 125.2 143.9

Pediatric Pre-adolescent 10 13 27.2 38.6 63.6 127.3 144.4 161.6

Pediatric Teenager 13 18 38.5 59 90.8 145.7 166.3 187

Pediatric Late Adolescent 18 21 45.3 70.3 104.4 152.5 170.5 188.5

Adult Adult Alternate 21 - 45.3 70.3 104.4 152.5 170.5 188.5

Adult Adult Original 21 - 45.3 70.3 104.4 152.5 170.5 188.5

Height

(cm) 95%

Group Identifier Low Age (years) High Age (years)

Typical Head

Circumference (mm)

Pediatric Newborn 0 0.08 360 115

Pediatric Baby 0.08 1 430 137

Pediatric Toddler 1 3 480 153

Pediatric Pre-School 3 6 500 159

Pediatric School-aged 6 10 500 159

Pediatric Pre-adolescent 10 13 500 159

Pediatric Teenager 13 18 500 159

Pediatric Late Adolescent 18 21 500 159

Adult Adult Alternate 21 - 500 159

Adult Adult Original 21 - 500 159

Typical Head

Diameter (mm)

Page 9 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.1.1 HeadHelical

Indications:

Helical mode for routine head studies, e.g. stroke, brain tumors, cranial trauma, cerebral atrophy, hydrocephalus, and

inflammation, etc. A range for the base and for the cerebrum of 200 mm will be covered in 10 sec.

Adult

HeadHelical

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 240 220 84 103 136 174 220 220 220 220

Effective mAs 325.7 298.5 113.4 140.3 185.1 235.8 298.5 298.5 298.5 298.5

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm

Pitch Factor 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415

Kernel Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard

CTDIvol 64.7 mGy 59.3 mGy 22.6 mGy 27.9 mGy 36.8 mGy 46.9 mGy 59.3 mGy 59.3 mGy 59.3 mGy 59.3 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 10 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.1.2 HeadSeq

Indications:

Sequential mode for routine head studies, e.g. stroke, brain tumors, cranial trauma, cerebral atrophy, hydrocephalus,

and inflammation, etc. A range for the base and for the cerebrum of 200 mm will be covered in 25 sec.

Adult

HeadSeq

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 169.6 155.5 59.1 73.1 96.4 122.8 155.5 155.5 155.5 155.5

Effective mAs 325.7 298.5 113.4 140.3 185.1 235.8 298.5 298.5 298.5 298.5

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm

Kernel Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard

CTDIvol 64.7 mGy 59.3 mGy 22.6 mGy 27.9 mGy 36.8 mGy 46.9 mGy 59.3 mGy 59.3 mGy 59.3 mGy 59.3 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 11 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.1.3 SinusHelical

Indications:

Helical mode for paranasal sinuses studies, e.g. sinusitis, mucocele, pneumatization, polyposis, tumor, corrections etc.

A range of 100 mm will be covered in 5 sec.

Adult

SinusHelical

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 52 41 30 33 35 38 41 41 41 41

Effective mAs 70.6 55.6 41.2 44.5 47.8 51.7 55.6 55.6 55.6 55.6

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm

Pitch Factor 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415

Kernel Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp

CTDIvol 14.0 mGy 11.1 mGy 8.2 mGy 8.8 mGy 9.5 mGy 10.3 mGy 11.1 mGy 11.1 mGy 11.1 mGy 11.1 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 12 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.1.4 SinusSeq

Indications:

Sequential mode for paranasal sinuses studies, e.g. sinusitis, mucocele, pneumatization, polyposis, tumor, corrections

etc. A range of 100 mm will be covered in 13 sec.

Adult

SinusSeq

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 36.7 29 21.4 23.2 24.9 26.9 29 29 29 29

Effective mAs 70.6 55.6 41.2 44.5 47.8 51.7 55.6 55.6 55.6 55.6

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm

Kernel Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp

CTDIvol 14.0 mGy 11.1 mGy 8.2 mGy 8.8 mGy 9.5 mGy 10.3 mGy 11.1 mGy 11.1 mGy 11.1 mGy 11.1 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 13 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.1.5 OrbitHelical

Indications:

Helical mode for paranasal sinuses studies, e.g. sinusitis, mucocele, pneumatization, polyposis, tumor, corrections etc.

A range of 100 mm will be covered in 5 sec.

Adult

OrbitHelical

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 85 67 50 54 58 62 67 67 67 67

Effective mAs 115.3 90.9 67.3 72.7 78.2 84.5 90.9 90.9 90.9 90.9

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm

Pitch Factor 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415

Kernel Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard

CTDIvol 22.9 mGy 18.1 mGy 13.4 mGy 14.5 mGy 15.5 mGy 16.8 mGy 18.1 mGy 18.1 mGy 18.1 mGy 18.1 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 14 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.1.6 OrbitSeq

Indications:

Sequential mode for paranasal sinuses studies, e.g. sinusitis, mucocele, pneumatization, polyposis, tumor, corrections

etc. A range of 100 mm will be covered in 13 sec.

Adult

OrbitSeq

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 60.1 47.3 35 37.9 40.7 44.0 47.3 47.3 47.3 47.3

Effective mAs 115.3 90.9 67.3 72.7 78.2 84.5 90.9 90.9 90.9 90.9

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm

Kernel Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard

CTDIvol 22.9 mGy 18.1 mGy 13.4 mGy 14.5 mGy 15.5 mGy 16.8 mGy 18.1 mGy 18.1 mGy 18.1 mGy 18.1 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 15 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.2 Shoulder

Overview

• Shoulder mode for routine helical and sequential scan shoulder studies

Hints in General

• Topogram: AP, 256 mm.

• Patient positioning: Patient lying in supine position, the uninjured arm placed above the head, the injured arm

placed flat along the body. If only one side is under investigation, position this side in the center and support the

other side with a Bocollo pillow.

Page 16 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.2.1 ShoulderHelical

Indications:

Helical mode for bone studies and soft tissues, e.g. evaluation of joint cavities, masses, trauma, dislocations,

orthopedic indications etc. A scan range of 150 mm will be covered in 7.5 sec.

Adult

ShoulderHelical

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 110 57 14 17 17 22 30 30 39 47

Effective mAs 149.3 77.3 19.3 22.4 22.4 30.2 41.0 41.0 52.6 64.2

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm

Pitch Factor 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415

Kernel Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp

CTDIvol 22.3 mGy 11.5 mGy 2.9 mGy 3.3 mGy 3.3 mGy 4.5 mGy 6.1 mGy 6.1 mGy 7.8 mGy 9.6 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 17 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.2.2 ShoulderSeq

Indications:

Sequential Scan mode for bone studies and soft tissues, e.g. evaluation of joint cavities, masses, trauma, dislocations,

orthopedic indications etc. A scan range of 150 mm will be covered in 19 sec.

Adult

ShoulderSeq

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 77.7 40.3 10.1 11.7 11.7 15.7 21.3 21.3 27.4 33.4

Effective mAs 149.3 77.3 19.3 22.4 22.4 30.2 41.0 41.0 52.6 64.2

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm

Kernel Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp

CTDIvol 22.3 mGy 11.5 mGy 2.9 mGy 3.3 mGy 3.3 mGy 4.5 mGy 6.1 mGy 6.1 mGy 7.8 mGy 9.6 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 18 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.3 Thorax (Chest)

Overview

• Thorax Helical and Sequential modes for routine chest studies

Hints in General

• Topogram: AP, 512 mm.

• Patient positioning: Patient lying in supine position, arms positioned comfortably above the head in the head-arm

rest, lower legs supported.

Page 19 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.3.1 ThoraxHelical

Indications:

Routine helical studies for the region of thorax, e.g., visualization of tumors, metastases, lymphoma, lymph nodes,

vascular anomalies etc. A range of 350 mm will be covered in 17 sec.

Adult

ThoraxHelical

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 50 38 10 11 11 15 20 20 26 32

Effective mAs 67.8 51.6 12.9 15.0 15.0 20.1 27.3 27.3 35.1 42.8

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm

Pitch Factor 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415

Kernel Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard

CTDIvol 10.1 mGy 7.7 mGy 1.9 mGy 2.2 mGy 2.2 mGy 3.0 mGy 4.1 mGy 4.1 mGy 5.2 mGy 6.4 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 20 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.3.2 ThoraxSeq

Indications:

Routine sequential studies for the region of thorax, e.g., visualization of tumors, metastases, lymphoma, lymph nodes,

vascular anomalies etc. A range of 350 mm will be covered in 42 sec.

Adult

ThoraxSeq

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 35.3 26.9 6.7 7.8 7.8 10.5 14.2 14.2 18.3 22.3

Effective mAs 67.8 51.6 12.9 15.0 15.0 20.1 27.3 27.3 35.1 42.8

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm

Kernel Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard

CTDIvol 10.1 mGy 7.7 mGy 1.9 mGy 2.2 mGy 2.2 mGy 3.0 mGy 4.1 mGy 4.1 mGy 5.2 mGy 6.4 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 21 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.4 Abdomen

Overview

• Abdomen Helical and Sequential modes for routine abdomen studies

Hints in General

• Topogram: AP, 512 mm.

• Patient positioning: Patient lying in supine position, arms positioned comfortably above the head in the head-arm

rest, lower legs supported.

• Patient respiratory instructions: inspiration.

Page 22 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.4.1 AbdomenHelical

Indications:

Helical mode for all routine studies in the region of abdomen, e.g., follow-up examinations etc.

A typical liver scan in a range of 200 mm will be covered in 10 sec.

Adult

AbdomenHelical

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 110 61 15 18 18 24 32 32 41 51

Effective mAs 149.3 82.8 20.7 24.0 24.0 32.3 43.9 43.9 56.3 68.7

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm

Pitch Factor 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415

Kernel Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard

CTDIvol 22.3 mGy 12.3 mGy 3.1 mGy 3.6 mGy 3.6 mGy 4.8 mGy 6.5 mGy 6.5 mGy 8.4 mGy 10.2 mGy

Weight

Adapted

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 23 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.4.2 AbdomenSeq

Indications:

Sequential mode for all routine studies in the region of abdomen, e.g., follow-up examinations etc.

A typical liver scan in a range of 200 mm will be covered in 25 sec.

Adult

AbdomenSeq

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 77.7 43.1 10.8 12.5 12.5 16.8 22.8 22.8 29.3 35.8

Effective mAs 149.3 82.8 20.7 24.0 24.0 32.3 43.9 43.9 56.3 68.7

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm

Kernel Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard

CTDIvol 22.3 mGy 12.3 mGy 3.1 mGy 3.6 mGy 3.6 mGy 4.8 mGy 6.5 mGy 6.5 mGy 8.4 mGy 10.2 mGy

Weight

Adapted

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 24 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.5 Pelvis (Hip)

Overview

• Pelvis (Hip) Helical and Sequential modes for routine pelvis studies

Hints in General

• Topogram: AP, 512 mm for pelvis studies. Lateral topogram may result in reduced image quality.

• Patient positioning: Patient lying in supine position, arms positioned comfortably above the head in the head-arm

rest, lower legs supported.

• A breathing command is not necessarily required for the pelvic examination, since respiration does not negatively

influence this region.

Page 25 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.5.1 PelvisHelical

Indications:

Helical mode for routine pelvis studies, e.g. processes of the prostate, urinary bladder, rectum, gynecological

indications etc. A typical range of 200 mm will be covered in 10 sec.

Adult

PelvisHelical

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 110 54 14 16 16 21 29 29 37 45

Effective mAs 149.3 73.3 18.3 21.2 21.2 28.6 38.8 38.8 49.8 60.8

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm

Pitch Factor 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415

Kernel Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard

CTDIvol 22.3 mGy 10.9 mGy 2.7 mGy 3.2 mGy 3.2 mGy 4.3 mGy 5.8 mGy 5.8 mGy 7.4 mGy 9.1 mGy

Weight

Adapted

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 26 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.5.2 PelvisSeq

Indications:

Sequential mode for routine pelvis studies, e.g. processes of the prostate, urinary bladder, rectum, gynecological

indications etc. A typical range of 200 mm will be covered in 25 sec.

Adult

PelvisSeq

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 77.7 38.2 9.5 11.1 11.1 14.9 20.2 20.2 26.0 31.7

Effective mAs 149.3 73.3 18.3 21.2 21.2 28.6 38.8 38.8 49.8 60.8

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm

Kernel Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard

CTDIvol 22.3 mGy 10.9 mGy 2.7 mGy 3.2 mGy 3.2 mGy 4.3 mGy 5.8 mGy 5.8 mGy 7.4 mGy 9.1 mGy

Weight

Adapted

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 27 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.6 Spine

Overview

• C-Spine Helical and Sequential modes for cervical spine studies

• SpineRoutine Helical and Sequential modes or routine lumbar and thoracic spine studies

Hints in General

• Topogram: Lateral, 512 mm for thoracic and lumbar spine and 256 mm for the c-spine.

• Patient positioning for thoracic and lumbar spine studies: Patient lying in supine position, arms positioned

comfortably above the head in the head-arm rest, lower legs supported.

• For lumbar studies, place a cushion under the patient’s knees. This will reduce the curve in the spine and also

make the patient more comfortable.

• Patient positioning for cervical spine studies: Patient lying in supine position, hyperextend neck slightly, secure

head well in head cradle.

• Patient respiratory instruction for thoracal and c-spine studies: Do not breathe, do not swallow.

Page 28 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.6.1 C-SpineHelical

Indications:

Helical mode for cervical spine studies, e.g. prolapse, degenerative changes, trauma, tumors etc. A range of 160 mm

will be covered in 8 sec.

Adult

C-SpineHelical

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 100 100 100 100 100 120 120 120

mA 93 95 24 28 28 37 50 50 65 79

Effective mAs 126.2 128.9 32.2 37.4 37.4 50.3 68.3 68.3 87.7 107.0

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm

Pitch Factor 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415

Kernel Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp

CTDIvol 18.8 mGy 19.2 mGy 3.1 mGy 3.6 mGy 3.6 mGy 4.8 mGy 6.6 mGy 10.2 mGy 13.1 mGy 16.0 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 29 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.6.2 C-SpineSeq

Indications:

Sequential mode for cervical spine studies, e.g. prolapse, degenerative changes, trauma, tumors etc. A range of 160

mm will be covered in 20 sec.

Adult

C-SpineSeq

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 100 100 100 100 100 120 120 120

mA 65.7 67.1 16.8 19.5 19.5 26.2 35.6 35.6 45.7 55.7

Effective mAs 126.2 128.9 32.2 37.4 37.4 50.3 68.3 68.3 87.7 107.0

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm

Kernel Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp

CTDIvol 18.8 mGy 19.2 mGy 3.1 mGy 3.6 mGy 3.6 mGy 4.8 mGy 6.6 mGy 10.2 mGy 13.1 mGy 16.0 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 30 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.6.3 SpineHelical

Indications:

Helical mode for thoracic, lumbar, and sacral spine studies, e.g. prolapse, degenerative changes, trauma, tumors etc.

A range of 160 mm will be covered in 8.6 sec.

Adult

Lumbar, Thoracic, & Sacrum Helical

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 110 114 29 33 33 44 60 60 78 95

Effective mAs 149.3 154.7 38.7 44.9 44.9 60.3 82.0 82.0 105.2 128.4

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm

Pitch Factor 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415

Kernel Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp

CTDIvol 22.3 mGy 23.1 mGy 5.8 mGy 6.7 mGy 6.7 mGy 9.0 mGy 12.2 mGy 12.2 mGy 15.7 mGy 19.1 mGy

Weight

Adapted

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 31 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.6.4 SpineSeq

Indications:

Sequential mode for thoracic, lumbar, and sacral spine studies, e.g. prolapse, degenerative changes, trauma, tumors

etc. A range of 160 mm will be covered in 19 sec.

Adult

Lumbar, Thoracic, & Sacrum Seq

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 77.7 80.6 20.1 23.4 23.4 31.4 42.7 42.7 54.8 66.9

Effective mAs 149.3 154.7 38.7 44.9 44.9 60.3 82.0 82.0 105.2 128.4

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm

Kernel Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp

CTDIvol 22.3 mGy 23.1 mGy 5.8 mGy 6.7 mGy 6.7 mGy 9.0 mGy 12.2 mGy 12.2 mGy 15.7 mGy 19.1 mGy

Weight

Adapted

Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 32 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.7 Extremities

Overview

• Extremities Helical and Sequential modes for routine wrist, elbow, knee, ankle and foot studies

Hints in General

• Topogram: AP, 256 mm for joint studies.

• Patient positioning: Depends on the region of examination. In general, for bilateral studies, you should always try to

position the patient evenly whenever the patient can comply. For wrists and elbow scans: Patient lying in prone

position, hands stretched above the head and lying flat on a Bocollo pillow, ankles supported with a pad. Both

wrists should be examined together when necessary.

• For knee scan: Patient lying in supine position, feet first, promote relaxation by placing Bocollo pillows between

knees and feet, bind feet together. The only exceptions are extremely light patients. The latter can remove the leg

not being examined from the gantry by bending it 90° at the hip and the knee and placing the bottom of the same

foot against the gantry casing.

• For ankle and feet scan: Patient lying in supine position, feet first. Bind both ankles together if necessary to

assure the AP position of both feet.

Page 33 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.7.1 ExtremitiesHelical

Indications:

Helical mode for the combination of bone and soft tissue studies, e.g. masses, trauma, disorders of the joint etc. A

range of 150 mm will be covered in 7.5 sec.

Adult

ExtremitiesHelical

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 33 34 9 10 10 13 18 18 23 28

Effective mAs 44.8 46.1 11.5 13.4 13.4 18.0 24.5 24.5 31.4 38.3

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm 48 mm

Pitch Factor 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415 1.415

Kernel Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp

CTDIvol 8.9 mGy 6.9 mGy 1.7 mGy 2.0 mGy 2.0 mGy 2.7 mGy 3.6 mGy 3.6 mGy 4.7 mGy 5.7 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 34 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.7.2 ExtremitiesSeq

Indications:

Sequential mode for the combination of bone and soft tissue studies, e.g. masses, trauma, disorders of the joint etc. A

range of 150 mm will be covered in 19 sec.

Adult

ExtremitiesSeq

Original Alternate Newborn Baby Toddler

Pre-

School

Pediatric

Schoolaged

Preadolescent

Teenager

kV 120 120 120 120 120 120 120 120 120 120

mA 23.3 24 6.0 7.0 7.0 9.4 12.7 12.7 16.3 19.9

Effective mAs 44.8 46.1 11.5 13.4 13.4 18.0 24.5 24.5 31.4 38.3

Rotation Time 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s 1.92 s

Slice

Collimation

Late

Adolescent

1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm 1.06 mm

Slice Width 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm

Feed/Rotation 33.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm 31.92 mm

Kernel Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp Sharp

CTDIvol 8.9 mGy 6.9 mGy 1.7 mGy 2.0 mGy 2.0 mGy 2.7 mGy 3.6 mGy 3.6 mGy 4.7 mGy 5.7 mGy

Weight

Adapted

No No No No No No No No No No

Weight 70 kg 70 kg 3 kg 8 kg 13 kg 17 kg 27 kg 39 kg 59 kg 70 kg

Page 35 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.8 Full Body/Newborn Body

Overview

• Helical and Sequential modes for full body newborn

Hints in General

• Topogram: AP, FOV should be adjusted to best match patient size.

• Patient positioning: Patient lying in supine position, feet first, secure patient

Page 36 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.8.1 Full Body/Neonate Body/Helical

Indications:

Helical mode for the combination of bone and soft tissue studies, e.g. masses, trauma, disorders of the joint etc. A

range of 150 mm will be covered in 7.5 sec.

Full Body/Neonate BodyHelical

Newborn

kV 80

mA 7

Effective mAs 9.5

Rotation Time

1.92 s

Slice Collimation 1.06 mm

Slice Width

1.0 mm

Feed/Rotation

48 mm

Pitch Factor 1.415

Kernel

Standard

CTDIvol

0.5 mGy

Weight Adapted No

Weight

3 kg

Page 37 of 38


Application Guide Protocols and Principles

MI-42-0005 Rev 8

3.8.2 Full Body/Neonate BodySeq

Indications:

Sequential mode for the combination of bone and soft tissue studies, e.g. masses, trauma, disorders of the joint etc. A

range of 150 mm will be covered in 19 sec.

Full Body/Neonate BodySeq

Newborn

kV 80

mA 4.9

Effective mAs 9.5

Rotation Time

Slice Collimation

Slice Width

Feed/Rotation

Kernel

CTDIvol

Weight Adapted

Weight

1.92 s

1.06 mm

1.0 mm

48 mm

Standard

0.5 mGy

No

3 kg

Page 38 of 38

More magazines by this user
Similar magazines