DIGITAL RADIOGRAPHY AND PACS QUESTIONS AND ANSWERS 2025
What is Conventional Film/Screen Radiography? - (ANSWER)A method using film and intensifying
screens to produce images, where film is exposed to light emitted from screens when struck by x-rays.
What is Digital Imaging? - (ANSWER)An image acquisition process that produces electronic images, first
used in the 1970s with computed tomography (CT).
Who developed the first CT scanner? - (ANSWER)Hounsfield developed the first CT scanner, which
combined imaging devices and computers.
What is Photostimulable Phosphor (PSP) in digital radiography? - (ANSWER)A technology previously
known as computed radiography (CR) that uses phosphor plates to capture x-ray energy and produce
digital images.
What are Flat Panel Detectors (FPDs)? - (ANSWER)Devices that use x-ray absorber materials coupled to
TFT, CMOS, or CCD to form images, available in indirect and direct capture types.
What is the difference between indirect and direct capture in FPDs? - (ANSWER)Indirect capture
converts x-rays to light before creating an electrical signal, while direct capture converts x-rays directly
to an electrical signal.
What are the components of a Medical Image Management and Processing System (MIMPS/PACS)? -
(ANSWER)A network of computers, servers, and archives that manage and store digital images, allowing
access to multiple users simultaneously.
What does DICOM stand for? - (ANSWER)Digital Imaging and Communications in Medicine, a standard
that allows imaging modalities and PACS to communicate.
What is the role of a PSP reader? - (ANSWER)To scan the photostimulable phosphor plate, causing
electrons to return to their original state and emit light, which is then converted into a digital image.
What is the significance of patient demographics in digital imaging? - (ANSWER)Accurate patient
identification is crucial as incorrect data can make image retrieval impossible.
What is Conventional Film/Screen Radiography? - (ANSWER)A method using film and intensifying
screens to produce images, where film is exposed to light emitted from screens when struck by x-rays.
What is Digital Imaging? - (ANSWER)An image acquisition process that produces electronic images, first
used in the 1970s with computed tomography (CT).
Who developed the first CT scanner? - (ANSWER)Hounsfield developed the first CT scanner, which
combined imaging devices and computers.
What is Photostimulable Phosphor (PSP) in digital radiography? - (ANSWER)A technology previously
known as computed radiography (CR) that uses phosphor plates to capture x-ray energy and produce
digital images.
What are Flat Panel Detectors (FPDs)? - (ANSWER)Devices that use x-ray absorber materials coupled to
TFT, CMOS, or CCD to form images, available in indirect and direct capture types.
What is the difference between indirect and direct capture in FPDs? - (ANSWER)Indirect capture
converts x-rays to light before creating an electrical signal, while direct capture converts x-rays directly
to an electrical signal.
What are the components of a Medical Image Management and Processing System (MIMPS/PACS)? -
(ANSWER)A network of computers, servers, and archives that manage and store digital images, allowing
access to multiple users simultaneously.
What does DICOM stand for? - (ANSWER)Digital Imaging and Communications in Medicine, a standard
that allows imaging modalities and PACS to communicate.
What is the role of a PSP reader? - (ANSWER)To scan the photostimulable phosphor plate, causing
electrons to return to their original state and emit light, which is then converted into a digital image.
What is the significance of patient demographics in digital imaging? - (ANSWER)Accurate patient
identification is crucial as incorrect data can make image retrieval impossible.
