Along a line parallel to the axis of rotation and 1.0 centimeter
interior to the surface of the phantom at position 270 degrees from
the position b)
1.19
In the following tables the CTDI values measured in the central location of the dosimetry phantom in each selectable CBCT
condition of operation are listed. Three tables are reported, each referred to a different patient selection: man, woman, child.
Please note that CTDI values are presented both as absolute value (CTDI [mGycm] column) and as relative value (CTDI
normalized), which correspond to the absolute value normalized to the CTDI in the center location of the dosimetry phantom.
Patient selection: man
FOV Size Quality
Tube
Voltage
[kV]
Anodic
Current
[mA]
Exposure
Duration
[s]
Current
Time
Product
[mAs]
CTDI
[mGy]
CTDI
normalized
40 x 40 mm
Small Standard 90 6.0 6.0 36.0 1.75 0.60
Medium Standard 90 8.0 6.0 48.0 2.42 0.85
Large Standard 90 10.0 6.0 60.0 3.00 1.05
Small Medium 90 6.0 7.2 43.2 2.16 0.76
Medium Medium 90 8.0 7.2 57.6 2.86 1.00
Large Medium 90 10.0 7.2 72.0 3.55 1.24
Small High 90 6.0 9.0 54.0 2.69 0.94
Medium High 90 8.0 9.0 72.0 3.57 1.25
Large High 90 10.0 9.0 90.0 4.47 1.57
60 x 60 mm
Small Standard 90 6.0 6.0 36.0 2.88 1.01
Medium Standard 90 8.0 6.0 48.0 3.85 1.35
Large Standard 90 10.0 6.0 60.0 4.80 1.68
Small Medium 90 6.0 7.2 43.2 3.49 1.22
Medium Medium 90 8.0 7.2 57.6 4.60 1.61
Large Medium 90 10.0 7.2 72.0 5.78 2.02
Small High 90 6.0 9.0 54.0 4.31 1.51
Medium High 90 8.0 9.0 72.0 5.78 2.02
Large High 90 10.0 9.0 90.0 7.21 2.52
80 x 80 mm
Small Standard 90 6.0 6.0 36.0 3.24 1.13
Medium Standard 90 8.0 6.0 48.0 4.17 1.46
Large Standard 90 10.0 6.0 60.0 5.33 1.87
Small Medium 90 6.0 7.2 43.2 3.79 1.33
Medium Medium 90 8.0 7.2 57.6 5.11 1.79
Large Medium 90 10.0 7.2 72.0 6.36 2.23
Small High 90 6.0 9.0 54.0 4.77 1.67
Medium High 90 8.0 9.0 72.0 6.36 2.23
Large High 90 10.0 9.0 90.0 7.93 2.78
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