Ctdi Values (120 Kv Tube) - Planmeca ProMax 3D Max with ProTouch Technical Manual

1 General and technical data
Deviation from the default CT scanner conditions of
operation
Low Dose and Normal ULD
HD ULD
Child patient
Any scan
ULD Low Dose
ULD Offset Scan
ULD
Item C
Deviation from the default CT scanner conditions
of operation
X- ray tube voltage: 66 kV
X- ray tube voltage: 74 kV
Item D
Dose profile
Sensitivity profile
Weighted CTDI
Volume CTDI
Geometric efficiency in z-direction

1.7 CTDI values (120 kV tube)

22 Planmeca ProMax 3D Max
NOTE
Values in this item are normalised to the CTDI
Item A 2.
Maximum deviation from the values given in Items A, B and C is ±20%.
Dose profile N/A – dose substantially equal in z-direction.
Sensitivity profile N/A - the resolution is substantially equal in z-direction.
100
CTDI (VolumeComputedTomographyDoseIndex) describes the average
w
dose over the total volume scanned for the selected CT conditions of
operation.
CTDI = 12.64 mGy
W
w
CTDI = 12.64 mGy
vol
Geometric efficiency in z-direction is 100%.
The following dose information is measured in a dosimetry phantom (head
phantom) that is compatible with the specification in international standard
IEC 60601-2-44 chapter 29.1.102.2.
Relative CTDI
0.21
0.28
N/A
0.5* relative CTDI
0.5* relative CTDI
0.33* relative CTDI
100 (peripheral, max)
Relative CTDI
100 (peripheral, max)
0.18
0.33
100 (centre)
in item
Technical manual