Module 10

Question 1

In digital mammography, indirect capture uses a ________, such as ________, to trap and store the image temporarily.

substrate; aluminum
secondary medium; phosphors
film-screen; single-emulsion
conductor; amorphous selenium

Answer 1

secondary medium; phosphors

Question 2

Most computed radiography (CR) systems use detectors made of _________.

thin-film transistors
photomultiplier tubes
photostimulable storage phosphors (PSP)
amorphous selenium

Answer 2

photostimulable storage phosphors (PSP)

Question 3

During the conversion process of a computed radiography imaging plate, _________ strike(s) the plate to energize the phosphor material.

x-rays
electrons
a magnetic field
a laser beam

Answer 3

a laser beam

Question 4

A slot-scanning system works with a(n) ________ image receptor.

PSP plate
Charged-couple device
Amorphous silicon
Amorphous selenium

Answer 4

Charged-couple device

Question 5

In direct capture digital mammography, x-ray energy interacts directly with ______ and is converted into an electrical charge.

amorphous selenium
aluminum
PSP phosphors
a photomultiplier tube

Answer 5

amorphous selenium

Question 6

Pixels are involved in the detector’s ability to acquire images.

True
False

Answer 6

False

Question 7

The benefits of digital mammography are most significant for patients with _______ breast tissue.

fatty
glandular
heterogeneous
dense

Answer 7

dense

Question 8

All of the following are benefits of full-field digital mammography (FFDM) except ________.

wider latitude
reduced need for repeats
magnification views are not needed
quicker exam times

Answer 8

magnification views are not needed

Question 9

CAD is used most often:

along with film-screen imaging
to increase cancer detection rates among physicians interpreting high volumes
during the transition from analog to digital imaging
only with mini-PACS for mammography

Answer 9

during the transition from analog to digital imaging

Question 10

According to most manufacturers, monitor cleaning should occur ____________.

Daily
Weekly
Monthly
Quarterly

Answer 10

Daily

Question 11

Which of the following statements is not true regarding system noise ratio tests?

signal-to-noise ratio and contrast-to-noise ratio tests are performed simultaneously
signal-to-noise and contrast-to-noise ratio tests use the same phantom
density measurements are taken in 1 area
the baseline contrast-to-noise is determined at equipment installation

Answer 11

density measurements are taken in 1 area