ASNC Review

Question 1

The unit for radiation exposure in the air is

Answer 1

Roentgen

Question 2

With the use of a tissue weighting factor, the Roentgen is converted to a ___ for assessing absorbed dose.

Answer 2

RAD.

Radiation Absorbed Dose

Question 3

REM measures:

Answer 3

Relative biological effectiveness

Question 4

The SI unit for RAD is:

Answer 4

Gray

Question 5

The SI unit for REM is:

Answer 5

Sievert

Question 6

RAD/REM converts to Sievert/Gray equation

Answer 6

Divide RAD/REM by 100

Question 7

The average background radiation exposure per year is:

Answer 7

300-500 mRem

Question 8

The average background radiation exposure per year is:
100-200 mRem/year
300-500 mRem/year
500-1000 mRem/year

Answer 8

300-500

Question 9

The largest source of background radiation is:

Answer 9

Radon

Question 10

The largest source of background radiation
 is:
Radon
Cosmic Ray
Terrestrial radiation

Answer 10

Radon

Question 11

The nonoccupational dose limit is:

1) 10mRem/year
2) 100 mRem/year
3) 5000 mRem/year

Answer 11

100 mRem/year

Question 12

The whole body occupational dose limit is

Answer 12

5000 mRem/year

Question 13

The whole body occupational dose limit is :

100 mRem/year
500 mRem/year
5000 mRem/year

Answer 13

5000 mRem/year

Question 14

The occupational dose limit to an extremity is:

Answer 14

50,000 mRem/year

Question 15

The occupational dose limit to an extremity is:
5,000 mRem/year`
15,000 mRem/year
50,000 mRem/year

Answer 15

50,000 mRem/year

Question 16

The pregnant worker dose limit is:

Answer 16

500 mRem/gestation

Question 17

Personnel monitoring is required when:
A) The likely exposure is expected to exceed 500 mRem
B) Personnel are handling radioactive material

Answer 17

Both A and B

Question 18

Common monitors in Nuclear Medicine/Cardiology labs are:

1) Film badges
2) TLD ring badges
3) OSL whole body badges
4) All of the above

Answer 18

4 – all of the above

Question 19

ALARA stands for

Answer 19

As Low As reasonably Achievable

Question 20

100 mRem/hr measured at 1 meter would be:

Answer 20

25 mR/hr (2x the distance, ¼ the dose)

Question 21

Assuming HVL for Tc99m is 0.3 mm in lead. How much lead would be needed to reduce th exposure from 10 mR to 5 mR

Answer 21

0.3 mm

Question 22

The ALARA I level for the whole body is:

Answer 22

125 mRem/quarter

Question 23

The appropriate survey instrument in Nuclear Medicine is:

1) Ion chamber
2) Pen dosimeter
3) Geiger Mueller Meter

Answer 23

3) Geiger mueller meter

Question 24

When checking for removable contamination with a scalar and a well, the correct size area to wipe is:

1) 1 cm x 1 cm
2) 10 cm x 10 cm
3) 100 cm x 100 cm

Answer 24

2) 10 x 10 cm

Question 25

When checking for removable contamination with a scalar and a well, the correct size area to wipe is:

Answer 25

10 x 10 cm

Question 26

When dealing with a Tc 99m spill, the threshold for a major vs minor spill as defined by NUREG 1556 volume 9 is:

Answer 26

100 mCi

Question 27

When dealing with a Tc 99m spill, the threshold for a major vs minor spill as defined by NUREG 1556 volume 9 is:

1) 100 mCi
2) 50 mCi
3) 25 mCi
4) 10 mCi

Answer 27

100 mCi

Question 28

When returning radioactive material as “excepted package, limited quantity”, the surface exposure must be (mR/hr):
1)

Answer 28

2) 0.5 MR/hr

Question 29

When returning radioactive material as “excepted package, limited quantity”, the surface exposure must be (mR/hr):

Answer 29

0.5 MR/hr

Question 30

Misadministration must be reported to the DOH if:

Answer 30

Results in a dose to the patient of > 5 Rem/whole body