DIGITAL IMAGE PROCESSING EXAM 2024/2025 questions and answers | verified
CT - the introduction of ______ started radiology's transition into digital
reusable detector - digital radiography imaging systems replace traditional film with a
computed radiography - image data are digitized and immediately displayed on a monitor or
recorded on film
digital radiography - any method of X-ray image formation that uses a computer to store and
manipulate data.
Photostimulable phosphor (PSP) - The phosphor layer of the imaging plate (IP) composed of
barium fluorohalide crystals doped with europium
create the image - once the PSP is exposed, the cassette is taken to the reader to process the
plate and
two step process - computed radiography is a
digital radiography - the detector and reader that are a permanent part of the table or wall unit, a
cassette is not needed
direct conversion detectors - Directly converts the radiation to electrical charges
indirect conversion detectors - use a two part process involving a scintillator and a photodetector
scintillator - converts incoming x-ray photons to light
DICOM - Protocol for transmission between imaging devices
, digital image - An image that has been converted into numerical values for transmission or
processing
analog signals - the electronic devices that produce radiographic images by design produce
digital analog signals - a series of voltage fluctuations on a continuous waveform with infinite
values between upper and lower values
binary machine language - Language required to form a digital image
analog-to-digital conversion - A process of converting continuous information into discrete data;
some information is typically lost.
sampling - the analog voltage values are measured at a chosen sampling frequency on the analog
waveform
quantification - the process of turning the sampled piece of analog data into a discrete analog
value
binary digit - after sampling and quantification, the analog values are converted into a
0- off in the binary system
1- on in the binary system
bit - binary digit
byte - a group of 8 bits
CT - the introduction of ______ started radiology's transition into digital
reusable detector - digital radiography imaging systems replace traditional film with a
computed radiography - image data are digitized and immediately displayed on a monitor or
recorded on film
digital radiography - any method of X-ray image formation that uses a computer to store and
manipulate data.
Photostimulable phosphor (PSP) - The phosphor layer of the imaging plate (IP) composed of
barium fluorohalide crystals doped with europium
create the image - once the PSP is exposed, the cassette is taken to the reader to process the
plate and
two step process - computed radiography is a
digital radiography - the detector and reader that are a permanent part of the table or wall unit, a
cassette is not needed
direct conversion detectors - Directly converts the radiation to electrical charges
indirect conversion detectors - use a two part process involving a scintillator and a photodetector
scintillator - converts incoming x-ray photons to light
DICOM - Protocol for transmission between imaging devices
, digital image - An image that has been converted into numerical values for transmission or
processing
analog signals - the electronic devices that produce radiographic images by design produce
digital analog signals - a series of voltage fluctuations on a continuous waveform with infinite
values between upper and lower values
binary machine language - Language required to form a digital image
analog-to-digital conversion - A process of converting continuous information into discrete data;
some information is typically lost.
sampling - the analog voltage values are measured at a chosen sampling frequency on the analog
waveform
quantification - the process of turning the sampled piece of analog data into a discrete analog
value
binary digit - after sampling and quantification, the analog values are converted into a
0- off in the binary system
1- on in the binary system
bit - binary digit
byte - a group of 8 bits
