LRA 221 Finals Review Exam 2024-2025 |
LRA 221 Exam Review 2024 Questions
and Correct Answers Rated A+
Film and intensifying screens are primarily used in -ANSWER-
conventional radiography
CR acquires an image through: -ANSWER-The use of a storage
phosphor plate
Technologist efficiency ratings are generally the same when
comparing conventional radiography with ______ radiography. -
ANSWER-computed
The active element in a storage phosphor is: -ANSWER-barium
fluorohalide
In reference to PSP image capture, to release the latent image, which
of the following devices is scanned over the phosphor plate? -
ANSWER-Focused laser light
X-ray energy related in indirect capture DR will stimulate a ______,
which eventually is changed into an electrical signal. -ANSWER-
scintillator
The ______ converts x-ray energy directly to a digital electrical signal.
-ANSWER-photoconductor
Exposure latitude is to conventional radiography as _______ is to DR.
-ANSWER-dynamic range
, A look-up table maps -ANSWER-Image gray scale values
All of the following are components of a PACS except -ANSWER-
independent kilovoltage peak and milliampere-second stations.
Similar to CR, DR can use the existing diagnostic equipment found in
today's imaging departments. -ANSWER-False- Can't use the same
equipment
Indirect capture DR converts absorbed x-ray energy into visible light. -
ANSWER-True- indirect DR convert X-ray energy to visible light
DICOM is a standard that allows imaging modalities and PACS to
communicate in the same language. -ANSWER-True
Which of the following statements is not true? -ANSWER-Changing
the matrix and the FOV will not change the size of the pixel.
Each square in a matrix is called a -ANSWER-picture element
The number of bits per pixel is known as bit -ANSWER-depth
Which of the following statements is not true?? -ANSWER-Exposure
index refers to the amount of exposure to the patient.
Deviation index is the difference between _____ and _____ expressed
in logarithmic fashion. -ANSWER-actual exposure (KIND); target
exposure (KTGT)
How dark or light a digital image appears on a display monitor is
known as: -ANSWER-brightness
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