COMPUTED TOMOGRAPHY CH 1-4 QUIZ
WITH ANSWERS
In y_________ ycompression, ythere yis yno yloss yof yinformation yin ythe ycompressed
yimage. y- ycorrect yanswers y-Lossless yor yreversible
Lossy yor yirreversible ycompression yinvolves yat yleast y3 ysteps, yimage
ytransformation, yquantization, yand y___________. y- ycorrect yanswers y-Encoding
______ yrefers yto yusing yone yor ymore ysoftware yand yor yhardware ytechniques yto
yreduce yinformaiton yby yremoving yunnecessary ydata. y- ycorrect yanswers y-Digital
ycompression
Image ypostprocessing ymethods yin yCT yare yintended yto: y- ycorrect yanswers y-
Enhance ythe ydiagnostic yinterpretation yskills yof ythe yradiologist.
______ yis yresponsible yfor yhigh yspeed yprocessing yof ythe yinput ydigital ydata. y-
ycorrect yanswers y-Internal yimage yprocessor
, Hounsfeld's ywork yproduced ya ytechnique ythat yrevolutionized ymedicine yand
ydiagnostic yradiology. yHe ycalled ythe ytechnique: y- ycorrect yanswers y-computerized
ytransverse yaxial yscanning y(tomography)
The yformation yof yCT yimages yby ya yCT yscanner yinvolves: y- ycorrect yanswers y-Data
yacquistion, yimage yreconstruction, yimage ydisplay, ymanipulation, ystorage, yrecording
yand ycommunication y(All yof ythe yabove)
The ycomputer yuses yspecial ymathematical ytechniques yto yreconstruct ythe yCT yimage
yin ya yfinite ynumber yof ysteps ycalled: y- ycorrect yanswers y-Cone ybeam yimage
yreconstruction yalgorithm
Algebraic yreconstruction ytechnique
image yreconstruction yalgorithms
ALL yOF yTHE yABOVE
Data yacquisition yrefers yto ythe ysystematic ycollection yof yinformation yfrom ythe y_____
yto yproduce yCT yimages y- ycorrect yanswers y-Patient
The yprocess yof ychanging ythe yCT yimage ygray yscale yis yreferred yto yas: y- ycorrect
yanswers y-Windowing
Which ybeam yis yused yto yscan ya yvolume yof ytissue yrather ythan ya ysingle? y- ycorrect
yanswers y-Spiral yor yHelical
What yis ythe ymost yrecent yMSCT yscanner ycommercially yavailable yfor yclinical
yimaging yfor ypatients? y- ycorrect yanswers y-64 yslice
What yis ythe ybeam ycalled ywhen yall ythe yphotons yhave ythe ysame yenergy? y-
ycorrect yanswers y-Homogenous
How ymany ygenerations yof ycomputers yare ythere? y- ycorrect yanswers y-5
An yexample yof ybinary ynumbering yis: y- ycorrect yanswers y-01011
The ygoal yof yCT yis yto yovercome ythe ylimitation yof yradiology yand ytomography yby
yachieving ythe yfollowing: y- ycorrect yanswers y-Minimal ysuperimposition
Improving yimage ycontrast
Recording yof yvery ysmall ydifferences yin ytissue ycontrast
ALL yOF yTHE yABOVE
The yfirst ywhole ybody yCT yScanner ywas ydeveloped yby: y- ycorrect yanswers y-Dr.
yRobert yLedley
How ymany ybits ymake ya ybyte? y- ycorrect yanswers y-8
ROM ystands yfor y- ycorrect yanswers y-Read yonly ymemory
WITH ANSWERS
In y_________ ycompression, ythere yis yno yloss yof yinformation yin ythe ycompressed
yimage. y- ycorrect yanswers y-Lossless yor yreversible
Lossy yor yirreversible ycompression yinvolves yat yleast y3 ysteps, yimage
ytransformation, yquantization, yand y___________. y- ycorrect yanswers y-Encoding
______ yrefers yto yusing yone yor ymore ysoftware yand yor yhardware ytechniques yto
yreduce yinformaiton yby yremoving yunnecessary ydata. y- ycorrect yanswers y-Digital
ycompression
Image ypostprocessing ymethods yin yCT yare yintended yto: y- ycorrect yanswers y-
Enhance ythe ydiagnostic yinterpretation yskills yof ythe yradiologist.
______ yis yresponsible yfor yhigh yspeed yprocessing yof ythe yinput ydigital ydata. y-
ycorrect yanswers y-Internal yimage yprocessor
, Hounsfeld's ywork yproduced ya ytechnique ythat yrevolutionized ymedicine yand
ydiagnostic yradiology. yHe ycalled ythe ytechnique: y- ycorrect yanswers y-computerized
ytransverse yaxial yscanning y(tomography)
The yformation yof yCT yimages yby ya yCT yscanner yinvolves: y- ycorrect yanswers y-Data
yacquistion, yimage yreconstruction, yimage ydisplay, ymanipulation, ystorage, yrecording
yand ycommunication y(All yof ythe yabove)
The ycomputer yuses yspecial ymathematical ytechniques yto yreconstruct ythe yCT yimage
yin ya yfinite ynumber yof ysteps ycalled: y- ycorrect yanswers y-Cone ybeam yimage
yreconstruction yalgorithm
Algebraic yreconstruction ytechnique
image yreconstruction yalgorithms
ALL yOF yTHE yABOVE
Data yacquisition yrefers yto ythe ysystematic ycollection yof yinformation yfrom ythe y_____
yto yproduce yCT yimages y- ycorrect yanswers y-Patient
The yprocess yof ychanging ythe yCT yimage ygray yscale yis yreferred yto yas: y- ycorrect
yanswers y-Windowing
Which ybeam yis yused yto yscan ya yvolume yof ytissue yrather ythan ya ysingle? y- ycorrect
yanswers y-Spiral yor yHelical
What yis ythe ymost yrecent yMSCT yscanner ycommercially yavailable yfor yclinical
yimaging yfor ypatients? y- ycorrect yanswers y-64 yslice
What yis ythe ybeam ycalled ywhen yall ythe yphotons yhave ythe ysame yenergy? y-
ycorrect yanswers y-Homogenous
How ymany ygenerations yof ycomputers yare ythere? y- ycorrect yanswers y-5
An yexample yof ybinary ynumbering yis: y- ycorrect yanswers y-01011
The ygoal yof yCT yis yto yovercome ythe ylimitation yof yradiology yand ytomography yby
yachieving ythe yfollowing: y- ycorrect yanswers y-Minimal ysuperimposition
Improving yimage ycontrast
Recording yof yvery ysmall ydifferences yin ytissue ycontrast
ALL yOF yTHE yABOVE
The yfirst ywhole ybody yCT yScanner ywas ydeveloped yby: y- ycorrect yanswers y-Dr.
yRobert yLedley
How ymany ybits ymake ya ybyte? y- ycorrect yanswers y-8
ROM ystands yfor y- ycorrect yanswers y-Read yonly ymemory
