Your Most Valuable QA & Dosimetry Tools MapCHECK 2TM Raising ...

MapCHECK
Raising the Bar in IMRT QA
Advanced two dimensional detector array for quick and
precise verification of radiotherapy dose distributions.
2TM
The MapCHECK 2 Advantage
Building on the success of the original MapCHECK, the MapCHECK 2 offers:
Most Detectors - 1527; more than any 2D array
Largest Field Size - 32 x 26cm; the largest of any 2D array
Highest Density - 7.07mm uniform spacing across the entire 2D array
Highest Resolution - Active detector area of only 0.64mm 2
Suitable for Rotational Dosimetry - The MapCHECK 2 has been successfully used on RapidArc, VMAT
and TomoTherapy ® machines*
Target Motion and Gating QA - MapCHECK 2 can be used for gating and target motion QA when used with
MotionSim
Real-time measurements - With a sampling frequency of 50ms, the MapCHECK 2 provides measurement
results in real-time
*With MapPHAN option
Your Most Valuable QA & Dosimetry Tools
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IMRT QA Should Be Simple
Easy to Setup
Single power/data cable connection
Use on the treatment couch or at prescription angle using the Isocentric Mounting Fixture (IMF)
When centered on CAX, registration is automatic
User Calibration
Patented wide field array calibration
No need to send the unit back to the manufacturer
Calibration only takes 15 minutes annually
Absolute Dose Measurements
No warm-up time required for absolute dose measurements
Measure absolute dose with a simple one-minute dose calibration
Sun Nuclear Diodes
Designed for measuring steep dose gradients - critical for accurate IMRT QA
Proven - used in thousands of radiotherapy facilities worldwide
Stable - real-world clinical use proves Sun Nuclear diode stability is the same if not better than ion chambers
Sensitive - 18,000 times more sensitivity than air cavity ion chambers
Diode Detectors: The Right Choice for IMRT QA
The dose volume averaging effect of ion chambers is well
documented. When using ion chambers for beam modeling
and QA, the planned and measured dose may agree
because they BOTH under and/or overestimate dose to the
target volume and surrounding structures. The QA results
may be favorable, but they are not satisfying the objective
of revealing inconsistencies between the planned dose and
actual delivered dose.
Benefits of Sun Nuclear Diodes:
120
100
80
60
40
Ion Chamber
Diode
Film
Smaller Active Area
Better Sensitivity
Thinner Active Thickness & Volume
Less Drift
No Dose Volume Averaging
20
0
-2 -1
0
1 2
2 x 2cm field profile measurements with various detectors
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Software
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With a single mouse click, MapCHECK software compares measured dose points to planned dose points. Users can
compare normalized data or absolute dose data using distance to agreement or Gamma. Three adjustable criteria
guarantee maximum flexibility and are easily adjusted. Measured points that do not fit within the acceptance criteria are
highlighted red for high dose and blue for low dose.
1
2
3
4
5
1
2
TH: Isodose percentage line
that defines the dose area to
evaluate.
% Diff: Percent acceptance
criterion between Set 1 and
Set 2 dose values.
3
4
mm: Distance-to-agreement
criterion
% Pass: Percentage of
detector points that passed
within the defined threshold
with a pass/fail indication
5
Calc Shift: Determines if there
is a misalignment between
the measured & planned
dose maps and automatically
corrects for the misalignment if
accepted by the user
Standard Software Features
• Rotational Dosimetry
• Flatness & Symmetry (Beam QA)
• Histograms
• Isodose Overlay/Subtraction
• MLC QA
• File Management
• Gamma Analysis
• Film Analysis (including Gafchromic)
• Structure Filter Analysis
• EPID Image Analysis
• Profiles
• User Calibration
• Reports (including PDF)
• Batch Analysis
• Integration with ATLAS
Your Most Valuable QA & Dosimetry Tools

Features, Specifications and Accessories
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1527 Sun Nuclear Diodes
Use the IMF to position the MapCHECK 2
at isocenter and measure at any gantry angle
26 x 32cm Field Size
Field size indicators
7.07mm uniform spacing
Single cable connection for
power and data
MapCHECK 2 shown in the MapPHAN
to enable Rotational Dosimetry
Detector type:
Detector quantity: 1527
Active detector area (mm 2 ): 0.64
Detector volume (cm 3 ): 0.000019
Sun Nuclear Diode Detectors
Detector stability: 0.5%/kGy at 6MV
Dose rate dependence:
Detector spacing (mm):
Field size (cm): 32.0 x 26.0
± 1%, 75 - 250cm SSD
7.07 (uniform throughout array)
Array geometry (cm):
• Detector spacing parallel to X and Y axes: 1.0
• Row spacing offset: 0.5
Inherent buildup (g/cm 2 ): 2.0 ± 0.1
Inherent backscatter (g/cm 2 ): 2.75 ± 0.1
Radiation measured:
Operating system:
Number of connection cables:
• Electrons, 6 MeV to 25 MeV
• Photons, Co-60 to 25 MV
Windows 2000, XP 32-bit, or Vista 32-bit
Single power/data cable
Dimensions (cm) / Weight (kg): 28.7 x 56.0 x 4.3 / 7.1
M o t i o nSI
T M
M
Target Motion, Gating & Imaging QA
Reproduce actual target motion
Commission gating systems
M a p P H A N
T M
Rotational Dosimetry Delivered
Water equivalent phantom
Works with RapidArc, TomoTherapy ® and VMAT
EPIDose
TM
The Absolute in EPID Dosimetry
Use your EPID for IMRT QA
Accurately convert EPID images to dose maps
M a p C A L C
T M
Independent 2D Dose & MU Calculations
Fast and accurate 2D dose calculations
MU calculations
All data used is best available at time of publication. Data is subject to change without notice.
All Content ©2009, Sun Nuclear Corporation. All Rights Reserved. Elekta, VMAT and it’s logo
are all trademarks of Elekta AB. TomoTherapy and it’s logo are all registered trademarks of
Tomotherapy Inc. RapidArc and it’s logo are all trademarks of Varian Medical Systems, Inc.
1177D032709
Corporate Headquarters
425A Pineda Court
Melbourne, Florida 32940
tel: + 1 321 259-6862
web: www.sunnuclear.com