NewTom VG User Manual rev 4.0 - Image Works

IEC61223: Acceptance Test
9.7 IEC 61223-3-5 reference table
This table supplies reference values and reference conditions to be used when applying the IEC 61223-3-5
as acceptance test, when specified by contractual agreements.
5.1 Positioning of the
patient support
N.A.
5.2 Patient positioning
accuracy
5.2.1 Axial patient positioning
accuracy
±10mm from isocenter
5.3 Tomographic section
thickness
5.2.2 Sagittal and coronal patient
positioning light accuracy
5.3.1 Tomographic section
thickness for axial scanning
5.3.2 Tomographic section
thickness for helical scanning
±10mm from isocenter
Loading factors: automatically selected by the
software.
Thickness
Raccomanded criteria
5.0 mm ±1.0 mm
1.0 mm ±0.5 mm
0.5 mm -0 +0.5 mm
N.A.
5.4 Dose
Loading factors: automatically selected by the software.
Dose Mode: Standart Dose
CTDI FREE AIR
CTDIvol
Full Mode CTDI 100w
Zoom Mode CTDI 100w
HiRes Zoom Mode CTDI 100w
N.A.
Equal to CTDI 100w
2.4 mGy ±30%
2.0 mGy ±30%
7.3 mGy ±30%
Loading factors: automatically selected by the software.
Dose Mode: Boosted Dose
CTDI FREE AIR
CTDIvol
Full Mode CTDI 100w
Zoom Mode CTDI 100w
N.A.
Equal to CTDI 100w
4.5 mGy ±30%
3.3 mGy ±30%
5.5 Noise, mean CT
number and uniformity
Loading factors: automatically selected by the software.
Values are calculated as Arbitrary Unit (a.u.) because of the machine is not designed to
give HU.
Measured with Catphan 500.
Dose Mode: Standart Dose
Standard deviation (water)
Full Mode 340 a.u. ± 80
Zoom Mode 340 a.u. ± 80
HiRes Zoom Mode 400 a.u. ± 80
Rev. 1.0 - 02/15/2009 Page 41 of 72