Module 2--Digital Equipment and Image Production

Mammography equipment generally is constructed with 2 filaments measuring ________ mm and ________ mm. 0.01; 0.1 0.03; 0.3 0.01; 0.03 0.1 and 0.3

0.1 and 0.3

The target window of the mammography tube is made of ________. Glass Aluminum Beryllium Tungsten

Beryllium

In mammography, the typical effective focal spot is ________ shaped Symmetrically round Keystone Oval Variably

Keystone

________ is the target material most often chosen in mammography. Tungsten Beryllium Rhodium Molybdenum

Molybdenum

Mammography generators have excellent exposure linearity and reproducibility, which allow for: Variable voltage waveforms More accurate image comparisons over time Higher radiation doses Improved imaging of dense breast tissue

More accurate image comparisons over time

The grid ratio used in mammographic imaging is lower than grid ratios used in general radiographic imaging because of the lower ________ used in mammography. Tissue thickness Peak kilovolt (kVp) range SID setting Filter thickness

Peak kilovolt (kVp) range

________ helps produce the shades of gray necessary for mammograms. The Compton effect Coherence Photoelectric absorption Photodisintegration

Photoelectric absorption

The full auto mode used in mammographic imaging can control all of the following EXCEPT _______. kVp Density setting SID Filter material

SID

MQSA regulations require development of an automatic exposure control (AEC) ________ chart. Anatomy Density Technique SID

Technique

Which of the following is NOT TRUE regarding mammography magnification? Magnification is performed using a radiolucent plastic stand attached to the receptor Magnification uses compression The area of interest is magnified 1.4 to 2 times normal size The Mammography Quality Standards Act (MQSA) requires that systems offer at least 2 magnification values within acceptable ranges

The Mammography Quality Standards Act (MQSA) requires that systems offer at least 2 magnification values within acceptable ranges