Breast

Question 1

Occupational dose limits for a pregnant mammography technologist

Answer 1

5 mSv to the fetus (500mrem)

Question 2

Recommended SID

Answer 2

50-80 cm

Question 3

Avg kVp for Mammo

Answer 3

25-30

Question 4

Tube Currents for
Large focal spot size, size?
Small focal spot size, size?

Answer 4

100 mA, 0.3 mm

25 mA, 0.1 mm

Question 5

Avg dose per view

Answer 5

1.5 mGy

Question 6

Avg dose per breast on 4 view mammo

Answer 6

3 mGy

Question 7

Federally Mandated Limit

Answer 7

3mGy per view (0.3 rad)

Question 8

Max dose 1% lido w epi

Answer 8

7mg/kg

Question 9

Max dose 1% lido w/o epi

Answer 9

4.5mg/kg

Question 10

Daily QC

Answer 10

Processor and Darkroom cleanliness

Question 11

Requirements to read mammo

Answer 11

240 mammo during last 2 yrs of residency
3 mo formal training
60 documented hrs of education
8 hr training to read a new modality

Question 12

Recurrent rate for pt w residual calcs

Answer 12

60%

Question 13

Required resolution

Answer 13

13 lp/mm in the anode to cathode direction

11 lp/mm in the left to right direction

Question 14

Grid ratios

Answer 14

4:1 and 5:1

Question 15

Threshold risk for organ malfunction (3rd - 8w)

Answer 15

100 mGy

Question 16

Risk of severe mental retardation threshold (8 to 15 weeks)

Answer 16

100 mGy

Question 17

What BiRADS does sternalis get

Answer 17

BiRADS 1

Question 18

“Both old and new ACR phantoms are equivalent to a ____ thick breast with density representing ___ glandularity.

Answer 18

4.2cm, 50%

Question 19

Weekly for digital mammo

Answer 19

1. Phantom 2. Uniformity (flat field test) 3. CNR test

Question 20

New ACR phantom contains how many fibers-speck groups-masses?
How many are required for success?

Answer 20

6-6-6

2-3-2

Question 21

MRI protocol: Early (first post contrast image) phase must be obtained within how many min of contrast bolus?

Answer 21

2min.

Question 22

Gad contrast dosing for breast MRI…

Answer 22

at 0.1 mmol/kg