chapter 7: radiation safety in pet/ct

Question 1

technologists receive about…times the radiation exposure with pet/ct as compared with routine nuclear medicine

2
3
4
5
6

Answer 1

4

Question 2

notices, instructions, reports to workers, inspections and investigations are described by

10 cfr part 15
10 cfr part 35
10 cfr part 19
10 cfr part 20

Answer 2

10 cfr part 19

Question 3

the standards for protection against radiation and specifics of dose limits, work area posting requirements, and container labels are described by

10 cfr part 15
10 cfr part 35
10 cfr part 19
10 cfr part 20

Answer 3

10 cfr part 20

Question 4

the medical use of by-product materials, including accelerator or cyclotron produced materials and sealed sources are described by

10 cfr part 15
10 cfr part 35
10 cfr part 19
10 cfr part 20

Answer 4

10 cfr part 35

Question 5

which NUREG document provides summaries and specific indexing to NRC regulations?

NUREG-1550
NUREG-1552
NUREG-1557
NUREG-1556
NUREG-1551

Answer 5

NUREG-1556

Question 6

f18 is shipped as

DOT type A, class 8 package UN2916, nonspecial form
DOT type A, class 7 package UN2915, nonspecial form
DOT type B, class 8 package UN2915, nonspecial form
DOT type B, class 7 package UN2916, nonspecial form

Answer 6

DOT type A, class 7 package UN2915, nonspecial form

Question 7

within…hours of receipt, radioactive packages must be inspected for damage, surveyed, and wiped

1
2
3
4

Answer 7

3

Question 8

after a pet radioactive waste has decayed for at least 10 half lives and measures below background radiation, it may be disposed of as

regular trash
biomedical hazard
sharps container
medical trash
radioactive waste

Answer 8

medical trash

Question 9

T/F: results of surveys and calibrations, receipt of by-product materials, and records of transfers of by-product materials must be kept for 5 years according to NUREG-1556, volume 9, rev. 2

Answer 9

false. must be kept for 3 years

Question 10

T/F: patient and occupational exposure to include any record of exposure and occupational monitoring, bioassay, and occupational dose must be kept for 3 years

Answer 10

false. must be kept for the duration of the license

Question 11

in a “radiation area” a person may receive…in one hour at 30 cm from a radiation source

0.005 rem
0.05 rem
0.5 rem
5 rem

Answer 11

0.005 rem

Question 12

in a “caution, radiation area” a person may receive…in one hour at 30 cm from a radiation source

0.005 mR
0.05 mR
0.5 mR
5 mR

Answer 12

5 mR

Question 13

in a “caution/danger, high radiation area” a person may receive…in one hour at 30 cm from a radiation source

1 rem
0.1 rem
0.05 rem
5 rem

Answer 13

0.1 rem

Question 14

in a room with a pet/ct scanner, wall lead shielding should be no more than…inches thick

1-2 inches
1/4-1/2 inches
1/16-1/8 inches
1-3 inches

Answer 14

1/16-1/8 inches

Question 15

wipe tests must be performed

daily only
at the end of the week and end of the day
weekly only
monthly
biweekly

Answer 15

at the end of the week and end of the day

Question 16

pet scanners are…more sensitive for detecting radiation than scintillation cameras

20 times
30 times
40 times
50 times
60 times

Answer 16

50 times

Question 17

T/F: fdg is washed off easily with water

Answer 17

true

Question 18

what is the limit for a pregnant occupational worker during the gestational period?

< 5 mr
< 100 mr
< 5,000 mr
< 500 mr

Answer 18

< 500 mr

Question 19

the patient receives the most radiation exposure from the

fdg dose
topogram
diagnostic-quality ct
pet scanner

Answer 19

diagnostic-quality ct