Norland Elite 437A150, Operator'S Manual

Page: 181 / 490

Operator's Guide
437D140 Rev. I
Scanning AP Spine 7-3
Patient Dose
Note: The radiation dose to the patient is dependent on the type of scan procedure and the body thick-
ness of the patient. The table below lists typical entrance skin dosages for the AP Spine Measure
scan based on the listed body thickness.
Patient Thickness
(cm)
High Precision
(µSv)
Standard
(µSv)
High Speed
(µSv)
0-3 0.8 0.4 0.2
4-6 1.1 0.6 0.3
7-9 1.6 0.8 0.4
10-12 2.0 1.0 0.5
13-15 3.8 1.9 1.0
16-18 6.5 3.2 1.6
19-21 12.0 6.0 3.0
>21 18.7 9.4 4.7
Table 7-3: AP Spine Scan Skin Entrance Dose
Operator Dose
Note: The dose to the operator is negligible. During a scan, the radiation level at a distance of one
meter from the scanner table is less than 1.0 microsieverts per hour.