2026 QUESTIONS AND SOLUTIONS
◉ HTC (high-transmission cellular) grid:
_____grid that reduces scatter in2 directions
___ as grid strip
_____ as interspace material
____ grid ration Answer: crossed
copper
air
3.8:1
◉ Cones, collimators, and diaphragms are known as ____ ____ devices
Answer: beam restricting or limiting
◉ Collimation should not extend beyond any edge of IR by more
than ___ % of SID Answer: 2
◉ Decreasing the x-ray field will require _____ in exposure to
maintain constant density Answer: increase
,◉ 2 main digital mammography systems Answer: cassette-based;
cassette-less
◉ cassette-less systems can be considered to be___ or ____ conversion
systems Answer: direct; indirect
◉ _____ _____ is the flat-panel detector often used in the direct system
Answer: amorphous selenium
◉ ____ ____ ____ arrays are used to transfer electronic signals from the
selenium photoconductor to a computer Answer: thin-film transistor
(TFT)
◉ In cassette-based systems, the imaging plate has a ______ ______
with an active ingredient-europium-activated barium fluorohalide
which is activated when exposed to x-rays Answer: photostimulable
phosphor
◉ In all digital systems, the spatial resolution will depend on ______.
Answer: pixel size
◉ _______ is the smallest discrete picture element of an image, usually
a single dot Answer: pixel
, ◉ Increased pixel size will _____ resolution and increase ____. Answer:
increase; noise
◉ ______ prereads the mammograms, identifying areas of suspicion
or areas needing additional workup Answer: CAD
◉ picture archiving and communication system, enables
teleradiography and filmless libraries which can be accessed via
telephone, internet, or off-site location Answer: PACS
◉ Digital systems approved by FDA Answer: GE Senographe 2000D
Fischer Imaging SenoScan
LoRad Digital Breast Imager
Hologic/LoRad Selenia FFDM system
GE Senographe DS
Siemens Mammomat Novation DR
GE Senographe Essentials
Fuji Computed Radiography Mammography Suite (FCRMS)
◉ Guidelines for QA and processor quality control are determined
by _____ & _____ Answer: MQSA; ACR
◉ Darkroom cleanliness Answer: daily