Test Bank for Digital
Radiography and
PACS, EXAM 1 With
Verified Q&A 2024
conventional radiography an imaging technique that passes x-rays through the body, which expose
x-ray film to produce a negative image called a radiograph
Digital Imaging a process through which a picture is converted into a series of square electronic dots
known as pixels
Teleradiography moving images via telephone lines to and from remote locations
Photostimulable phosphor (PSP) The phosphor layer of the imaging plate (IP) composed of
barium fluorohalide crystals doped with europium
Flat Panel Detector Type of digital detector employing amorphous silicon or selenium detector
material, bonded with thin-film transistor technology for digital image creation and amplification
TFT thin film transistors (converts electrons into an electronic signal) - used in flat panel detectors
intensifying screen Device used to convert x-ray energy into visible light, which in turn exposes
screen film
charge coupled device device that converts light into electrical energy; used in digital cameras
Indirect Capture DR devices that absorb x-rays and convert them into light; the
, light is then detected by an area-charge-coupled device or thin-film transistor array in concert with
photodiodes, and then converted into an electrical signal that is sent to the computer for processing and
viewing
complementary metal-oxide semiconductor (CMOS) type of a sensor with technology that coverts x-
rays into an electronic signal, which is sent to the computer
analog A continuous method of representing information.
Digital Signal A signal that encodes information as a string of 1's and 0's
Analog-toDigital Conversion ( ADC) Analog signals converted to binary language
CR speed the amount of light that strikes the IR
exposure indicator Provides a numeric value indicating the level of radiation exposure to the digital
IR
Detective Quantum Efficiency (DQE) a measurement of the efficiency of an image receptor in
converting the x-ray exposure it receives to a quality radiographic image
rhodopsin the pigment in rod cells that causes light sensitivity
artifact unwanted density on images
backing layer soft polymer that protects the back of the cassette
barcode label label attached either to the cassette or to the imaging plate that identifies the plate for
the purpose of matching the examination to the plate
bit depth The number of bits used to encode each sample during digitization.
cassette Contains extraoral films during exposure
collimation The restriction of the size and shape of the x-ray beam in order to reduce patient
exposure.
color layer Located between the active layer and the support that absorbs the stimulating light but
reflects emitted light
conductive layer absorbs and reduces static electricity
fast scan direction movement of the laser across the imaging plate
focus grid the range where the X-ray image can be produced
grid frequency The number of lead strips per inch.
grid ratio the ratio of the height of the lead strips to the distance between them
imaging plate (IP) device that is made of a photostimulable phosphor that absorbs the photon
energies exiting the patient; is located inside a computed radiographic cassette
Kilovoltage peak (kVp) Highest voltage of x-ray tube used during an exposure
Radiography and
PACS, EXAM 1 With
Verified Q&A 2024
conventional radiography an imaging technique that passes x-rays through the body, which expose
x-ray film to produce a negative image called a radiograph
Digital Imaging a process through which a picture is converted into a series of square electronic dots
known as pixels
Teleradiography moving images via telephone lines to and from remote locations
Photostimulable phosphor (PSP) The phosphor layer of the imaging plate (IP) composed of
barium fluorohalide crystals doped with europium
Flat Panel Detector Type of digital detector employing amorphous silicon or selenium detector
material, bonded with thin-film transistor technology for digital image creation and amplification
TFT thin film transistors (converts electrons into an electronic signal) - used in flat panel detectors
intensifying screen Device used to convert x-ray energy into visible light, which in turn exposes
screen film
charge coupled device device that converts light into electrical energy; used in digital cameras
Indirect Capture DR devices that absorb x-rays and convert them into light; the
, light is then detected by an area-charge-coupled device or thin-film transistor array in concert with
photodiodes, and then converted into an electrical signal that is sent to the computer for processing and
viewing
complementary metal-oxide semiconductor (CMOS) type of a sensor with technology that coverts x-
rays into an electronic signal, which is sent to the computer
analog A continuous method of representing information.
Digital Signal A signal that encodes information as a string of 1's and 0's
Analog-toDigital Conversion ( ADC) Analog signals converted to binary language
CR speed the amount of light that strikes the IR
exposure indicator Provides a numeric value indicating the level of radiation exposure to the digital
IR
Detective Quantum Efficiency (DQE) a measurement of the efficiency of an image receptor in
converting the x-ray exposure it receives to a quality radiographic image
rhodopsin the pigment in rod cells that causes light sensitivity
artifact unwanted density on images
backing layer soft polymer that protects the back of the cassette
barcode label label attached either to the cassette or to the imaging plate that identifies the plate for
the purpose of matching the examination to the plate
bit depth The number of bits used to encode each sample during digitization.
cassette Contains extraoral films during exposure
collimation The restriction of the size and shape of the x-ray beam in order to reduce patient
exposure.
color layer Located between the active layer and the support that absorbs the stimulating light but
reflects emitted light
conductive layer absorbs and reduces static electricity
fast scan direction movement of the laser across the imaging plate
focus grid the range where the X-ray image can be produced
grid frequency The number of lead strips per inch.
grid ratio the ratio of the height of the lead strips to the distance between them
imaging plate (IP) device that is made of a photostimulable phosphor that absorbs the photon
energies exiting the patient; is located inside a computed radiographic cassette
Kilovoltage peak (kVp) Highest voltage of x-ray tube used during an exposure
