Detective Quantum Efficiency (DQE) Flashcards
refers to the efficiency of a detector in converting incident x-ray energy into an image signal
Detective Quantum Efficiency (DQE)
TRUE OR FALSE: DQE IS NOT DEPENDENT ON RADIATION EXPOSURE
FALSE, IT IS DEPENDENT
POOR DQE = REPEAT IMAGE. TRUE OR FALSE
TRUE
year glass plate wrapped in black paper invented
1900
year hand wrapped cellulose nitrate films invented
1913
year cellulose triacetate invented
1924
year polyester base invented
1960
year digital radiography invented
1980
year charge-coupled device (CCD) based imaging invented
1990
year digital imaging invented
2000
what is the controlling factor of voltage
kVp
TRUE OR FALSE: DQE is dependent on radiation exposure, spatial frequency, MTF, detector material
true
how much DQE for ideal detector
1
how many percent of DQE in a system that loses efficiency
40% and 50% (DQE 0.45)
is a method by which digital radiography manufacturers provide feedback to the technologist regarding the estimated exposure on the detector
exposure index
refers to the size of the range of light that a camera can capture from complete black to complete white
dynamic range
is the amount of under or over exposure that a particular image can handle while still fitting into the camera’s dynamic range
latitude
is the extent to which a light sensitive material can be overexposed or underexposed and still achieve an acceptable result
exposure latitude
the latitude of collimation that still allows the software to detect collimated edges
beam part receptor alignment latitude
digital acquisition or data of the various imaging modalities for input to a picture archiving and communication system
raw data acquisition
DICO stands for
digital imaging and communication in medicine
RIS stands for
radiology information standard system
HIS stands for
hospital information system
a graphic representation of data set; image before edge detection rescaling
histogram
