LRA 221 PRACTICE EXAMINATION 2026
QUESTIONS WITH ANSWERS GRADED A+
◍ What are disadvantages of PSP systems?.
Answer: Slower than FPDs and sensitive to scatter radiation.
◍ What did the Consolidated Appropriation Act of 2016 do?.
Answer: Reduced Medicare reimbursement to encourage FPD adoption.
◍ X-ray energy related to direct capture DR will stimulate a ______, which
eventually is changed into an electrical signal..
Answer: scintillator
◍ Which of the following statements is true?.
Answer: Changing the matrix and the FOV will not change the size of the
pixel
◍ The size of the pixel is determined by the.
Answer: matrix
◍ The ability of an imaging system to demonstrate small details of an object is
known as:.
Answer: spatial resolution
◍ The process of joining two or more images into one continuous image is
known as image?.
Answer: D. STITCHING
◍ True or falseAutomatic rescaling can be substituted for appropriate technical
factors.
Answer: False
◍ How do indirect flat panel detectors work?.
Answer: Cesium iodide converts x-rays to light first, then to electrical
, signals.
◍ A system's ability to respond to varying levels of exposure, resulting in
more detail, is referred to as:.
Answer: dynamic range
◍ Milliampere-seconds (mAs) is selected for the.
Answer: number of electrons needed
◍ PSP imaging plates are erased by flooding the plate with:.
Answer: light
◍ In an effort to display the pixels for the area of interest when exposure is
greater or less than what is needed to produce an image, ______ occurs..
Answer: automatic rescaling
◍ What types of workstations are included in PACS?.
Answer: QC stations for technologists and orthopedic stations for surgical
planning.
◍ The phosphor layer is made of phosphors from the ______ family..
Answer: barium fluorohalide
◍ Excessive light entering he eye when viewing an image is know as
________ glare.
Answer: veil
◍ Focal spot and OID affect image sharpness______imaging..
Answer: C. IN BOTH FILM/SCREEN AND DIGITAL
◍ KVp controls/provide?.
Answer: TO PROVIDE ADEQUATE PENETRATION
◍ Each light photon is assigned a number during.
Answer: digitization
◍ True or falseCCDs use more power than CMOS.
Answer: True
◍ The improper algorithm application may result in.
QUESTIONS WITH ANSWERS GRADED A+
◍ What are disadvantages of PSP systems?.
Answer: Slower than FPDs and sensitive to scatter radiation.
◍ What did the Consolidated Appropriation Act of 2016 do?.
Answer: Reduced Medicare reimbursement to encourage FPD adoption.
◍ X-ray energy related to direct capture DR will stimulate a ______, which
eventually is changed into an electrical signal..
Answer: scintillator
◍ Which of the following statements is true?.
Answer: Changing the matrix and the FOV will not change the size of the
pixel
◍ The size of the pixel is determined by the.
Answer: matrix
◍ The ability of an imaging system to demonstrate small details of an object is
known as:.
Answer: spatial resolution
◍ The process of joining two or more images into one continuous image is
known as image?.
Answer: D. STITCHING
◍ True or falseAutomatic rescaling can be substituted for appropriate technical
factors.
Answer: False
◍ How do indirect flat panel detectors work?.
Answer: Cesium iodide converts x-rays to light first, then to electrical
, signals.
◍ A system's ability to respond to varying levels of exposure, resulting in
more detail, is referred to as:.
Answer: dynamic range
◍ Milliampere-seconds (mAs) is selected for the.
Answer: number of electrons needed
◍ PSP imaging plates are erased by flooding the plate with:.
Answer: light
◍ In an effort to display the pixels for the area of interest when exposure is
greater or less than what is needed to produce an image, ______ occurs..
Answer: automatic rescaling
◍ What types of workstations are included in PACS?.
Answer: QC stations for technologists and orthopedic stations for surgical
planning.
◍ The phosphor layer is made of phosphors from the ______ family..
Answer: barium fluorohalide
◍ Excessive light entering he eye when viewing an image is know as
________ glare.
Answer: veil
◍ Focal spot and OID affect image sharpness______imaging..
Answer: C. IN BOTH FILM/SCREEN AND DIGITAL
◍ KVp controls/provide?.
Answer: TO PROVIDE ADEQUATE PENETRATION
◍ Each light photon is assigned a number during.
Answer: digitization
◍ True or falseCCDs use more power than CMOS.
Answer: True
◍ The improper algorithm application may result in.
