RADR Bio and Protection review

OSLs are sensitive enough to read exposures as low as

• .1 mrem

• 5 mrem

• 1 mrem or .01 mSV

• 10 mrem

The mA used in fluoroscopy must not exceed:

• 1 mA

• 10 mA

• 1 A

• 5 mA

The effective dose equivalent limit for a waiting room requires that family members (infrequent exposure) receive no more than __________ per year.

• 0.1 rem

• 0.5 rem or 5 mSv

• 1 rem

• 5 rem

The fetal dose limit during gestation is equal to :

• 1 mrem

• 500 mrem or 5 mSv

• 5 rem

• 0.005 rem

The exposure at table top used in routine fluoroscopy must not exceed:

• 500 mrem

• 1 A

• 10 R/ min

• 150 mA

Which of the following groups of exposure factors will deliver the most amount of exposure to the patient?

• 50 mAs, 90 kVp

• 100 mAs, 80 kVp

• 200 mAs, 70 kVp

• 25 mAs, 100 kVp

The source to skin ( table top) distance for mobile units is:

• 15"

• 12"

• 17"

• 30"

The exposure switch on a mobile diagnostic machine must be at least ________ long.

• 3 feet

• 5 feet

• 6 feet

• 12 feet

What is the embryo-fetus equivalent dose limit per month?

• 50 mrem or 0.5 mSv

• 5 rem

• 0.1 rem

• 0.5 rem

In mobile radiography, the exposure switch should be on a cord that is at least _______ ft long.

• 6

• 4

• 8

• 10