Mammography

Question 1

Mammography units that can perform digital breast tomosynthesis are most likely to have a tube target composed of ________.

Answer 1

Tungsten (W)

Question 2

For tomosynthesis units, ____________ is (are) commonly used as the x-ray tube filter material(s).

Answer 2

silver, aluminum, and rhodium

Question 3

The latest American College of Radiology (ACR) mammography accreditation phantom includes what objects?

Answer 3

6 fibers, 6 groups of specks, and 6 masses

Question 4

How does the breast radiation dose from breast tomosynthesis compare to that of conventional mammography?

Answer 4

About the same

Question 5

The average glandular dose when scanning the ACR digital mammography phantom must be less than _____.

Answer 5

3 mGy

Question 6

The maximum compression force for the inital power drive in mammography must be between ____ and _____.

Answer 6

11 daN, 20 daN

OR

25 lbs, 45 lbs

Question 7

According the MQSA, the tolerance for the x-ray / image receptor alignment is

Answer 7

2% of the SID

Question 8

What are the minimum phantom scoring requirements for the old ACR mammography phantom?

Answer 8

4 fibers, 3 spec groups, 3 masses

Question 9

What are the minimum phantom scoring requirements for the old ACR mammography phantom?

Answer 9

2 fibers, >=3 speck groups, 2 masses

Question 10

The ACR digital mammography phantom simulates what?

Answer 10

A “standard breast” of 4.2cm thickness and 50% glandularity.