Table 3 Frequency distributions of responses to questionnaires (n = 99)
Questions | Correct n (%) | Incorrect n (%) | Do not know n (%) |
|---|---|---|---|
1. Approximately how much terrestrial radiation in millisieverts (mSV) does a person absorb in Norway in a year? | 45(46) | 20(20) | 34(34) |
2. The Norwegian population is exposed to radiation from various sources. Of these, medical radiation contributes | 7(7) | 65(66) | 27(27) |
3. Approximately how much radiation does a patient absorb during a posterio-anterior (PA) chest X-ray? | 20(20) | 55(56) | 24(24) |
4.If the exposure to PA chest radiograph is taken as one unit, how many units would a patient absorb during the following procedures? | |||
CT abdomen | 22(22) | 60(61) | 17(17) |
CT lumbar spine | 16(16) | 67(68) | 16(16) |
MRI brain | 72(73) | 10(10) | 17(17) |
X-ray lumbar spine | 3(3) | 81(82) | 15(15) |
Ultrasound kidneys | 84(85) | 15(15) | - |
5.What is the risk of inducing a fatal cancer from a CT scan of the abdomen? | 12(12) | 60(61) | 27(27) |
6. What is the annual whole body dose limit for a patient? | 12(12) | 55(56) | 32(32) |
7. Which one of the following group is most sensitive to radiation? | 93(94) | 3(3) | 3(3) |