Norland Elite 437A150, Operator'S Manual

Page: 263 / 490

Operator's Guide
437D140 Rev. I
Scanning Lateral Spine 10-3
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.
Patient Thickness (cm) Entrance Dose (µSv)
0-3 0.2
4-6 0.3
7-9 0.4
10-12 0.5
13-15 1.0
16-18 1.7
19-21 3.2
>21 4.9
Table 10-3: Scout Scan Skin Entrance Dose
Patient Thickness (cm) High Precision (µSv) Standard (µSv) High Speed (µSv)
0-7 5.1 2.6 1.3
8-10 7.3 3.7 1.8
11-13 10.7 5.4 2.7
14-16 13.3 6.7 3.3
17-19 25.3 12.7 6.3
20-22 42.7 21.3 10.7
23-25 79.3 39.7 19.8
>25 123.3 61.7 30.8
Table 10-4:
Measure Scan Skin Entrance Dose (µSv)
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.