RTE 1401 Final Exam Questions with correct Answers

RTE 1401 Final Exam Questions with
correct Answers

Fixed iimAs/ iivariable iikVp iichart ii- iiCorrect iiAnswers ii-adjust iikVp iiby iimultiplying iiby ii2
ii(+/-) iifor iievery iiincrement iiof iiONE iicentimeter iior iiinch iiof iisize iidifference


Fixed iiKVP/ iivariable iimAs iichart ii- iiCorrect iiAnswers ii-adjust iimAs iiby iimultiplying ii(+)
iiby ii2 iifor iievery ii4-5 iicentimeter iior iiinch iisize iidifference


digital iiimage iiquality iifactors ii- iiCorrect iiAnswers ii-brightness, iicontrast iiresolution,
iispatial iiresolution, iidistortion iiexposure iiindicator, iinoise


brightness ii- iiCorrect iiAnswers ii-intensity iiof iilight iicoming iithrough iimonitor

contrast iiresolution ii- iiCorrect iiAnswers ii-how iiwell iia iisystem iican iidisplay iivarying
iishades iiof iigray
-affected iiby iidynamic iirange

pixel iidepth ii- iiCorrect iiAnswers ii-determines iithe iinumber iiof iishades iiof iigray iithat iican
iibe iidisplayed: ii2 iito iithe ii14th iipower= ii16,384 iishades iiof iigray


spatial iiresolution ii- iiCorrect iiAnswers ii-measured iiin iiLp/ iimm
-2.5- ii5 iiLp/mm iiin iidigital iiimaging

distortion ii- iiCorrect iiAnswers ii-size ii& iishape
effected iiby iiSID, iiOID, iiand iialignment

exposure iiindicator ii- iiCorrect iiAnswers ii-number iidisplayed iion iithe iiprocessed iiimage
iito iiindicate iithe iilevel iiof iix-ray iiexposure iireceived iito iithe iidigital iiimage iireceptor.
-red, iiyellow iior iigreen

noise ii- iiCorrect iiAnswers ii-random iidisturbance iithat iireduces iiof iiobscures iiimage
iiclarity
-SNR iiand iiquantum iinoise

Signal iito iiNoise iiRatio ii(SNR) ii- iiCorrect iiAnswers ii-The iiratio iiof iithe iispeech iisignal
ii(intended iisignal) iito iithat iiof iithe iibackground iinoise

,-HIGH iiis iiALWAYS iibest

quantum iinoise ii- iiCorrect iiAnswers ii-lack iiof iisufficient iidata ii(photons) ii- iiresults iiin
iiblotchy iior iimottled iiimage. iiIncrease iimAs iito iifix


algorithms ii- iiCorrect iiAnswers ii-complex iimath iiequations iiused iito iimaintain iiimage
iiquality


Dynamic iirange ii- iiCorrect iiAnswers ii-range iiof iishades iia iidigital iisystem iiis iicapable iiof
iidisplaying iias iiseen iiby iithe iihuman iieye


exposure iilatitude ii- iiCorrect iiAnswers ii-the iirange iiof iiexposures iithat iican iibe iiused
iiand iistill iiresult iiin iithe iicapture iiof iia iidiagnostic-quality iiimage
-DR iihas iimore iithan iifilm-screen iiimaging

scotopic iivision ii- iiCorrect iiAnswers ii-night iivision; iiuses iirods iiof iiretina iiwhich iiare
iiperipherally iilocated


photopic iivision ii- iiCorrect iiAnswers ii-daylight iivision; iiuses iicones, iicentrally iilocated

Image iiIntensifier ii- iiCorrect iiAnswers ii-an iielectronic iivacuum iitube iithat iiconverts iibeam
iiof iilight iito iielectrons, iithen iiback iito iilight, iiincreasing iithe iilight iiintensity iiin iithe
iiprocess
-brightens iiimage iiup iito ii5,000 iitimes iibrighter iithan iiconventional iifloural
-5 iiprincipal iiparts

5 iiprincipal iiparts iiof iiImage iiIntensifier ii- iiCorrect iiAnswers ii-input iiphosphor iiscreen,
iiphotocathode, iielectrostatic iifocusing iilenses, iiaccelerating iianode*, iioutput iiphosphor
iiscreen


Dead iiman's iiswitch ii- iiCorrect iiAnswers ii-apply iipositive iipressure iito iiswitch ii(not
iiconstant iipower)


input iiphosphor iiscreen ii- iiCorrect iiAnswers ii-a ii6"- ii23" iiscreen iibonded iito iithe iicurved
iisurface iiof iithe iiflourscopy iitube
-made iiof iicesium iiiodide iiwhich iiacts iias iia iiscintillator
-converts iiXR iito iilight
-curved iito iimaintain iidistance iito iifocal iipoint

photocathode ii- iiCorrect iiAnswers ii-emits iie- iiwhen iistimulated iiby iilight iiin iia iiprocess
iicalled iiphotoemission iidue iito iiit iibeing iimade iiof iicesium iiand iiantimony iicompounds
-bonded iidirectly iito iiinput iiphospher

electrostatic iifocusing iilenses ii- iiCorrect iiAnswers ii-negatively iicharged iiplates iithat
iirepel iithe iie- iito iiaccelerate iiand iifocus iithem
-gradient iiin iioperation

, output iiphosphor iiscreen ii- iiCorrect iiAnswers ii-2.5 iicm iiscreen iilocated iiat iithe iiopposite
iiend iiof iithe iiimage iiintensifier iithat iiconverts iie- iito iiintensified iilight
-made iiof iizinc iicadmium iisulfide

accelerating iianode* ii- iiCorrect iiAnswers ii-located iiat iithe iineck iiof iithe iiintensifier iinear
iioutput iiphospher, iiit iisets iithe iie- iistream iiin iimotion iiat iia iiconstant iivelocity


Multifield iiImage iiIntensifier ii- iiCorrect iiAnswers ii-multiple iisizes iiof iiinput iiscreen; iimay
iibe iiused iito iimagnify iithe iiimage


Flux iiGain ii- iiCorrect iiAnswers ii-Ratio iiof iithe iinumber iiof iilight iiphotons iiat iithe iioutput
iiphosphor iito iithe iinumber iiof iix-rays iiat iithe iiinput iiphosphor


Minification iiGain ii- iiCorrect iiAnswers ii-Ratio iiof iithe iisquare iiof iithe iidiameter iiof iithe
iiinput iiphosphor iito iithe iisquare iiof iithe iidiameter iiof iithe iioutput iiphosphor.


Total iiBrightness iiGain ii- iiCorrect iiAnswers ii-is iiequal iito iithe iiproduct iiof iiMinification
iiGain iiand iiFlux iiGain.
iiMG iix iiFG


Tube iifailure iireasons ii- iiCorrect iiAnswers ii-1. iiSingle iihigh-heat iiexposure iion iicold
iianode
2. iiTungsten iivaporizing
3. iiConsecutive iihigh iiheat iiexposures iior iilong iiexposure iitimes

Heat iiUnits ii(HU) ii- iiCorrect iiAnswers ii-kVp ii× iima ii× iisec. ii× iirectification iiconstant ii(RC)

Rectification iiconstant ii(generator iitype) ii- iiCorrect iiAnswers ii--Single iiphase= ii1
-3 iiphase, ii6 iipulse= ii1.35
-3phase, ii12 iipulse= ii1.41
-high iifrequency= ii1.45

Radiographic iicharts ii(3) ii- iiCorrect iiAnswers ii--tube iirating iichart
-anode iicooling iichart
-housing iicooling iichart

Tube iirating iichart ii- iiCorrect iiAnswers ii-Used iito iidetermine iiif iia iigiven iiset iiof iiexposure
iifactors iiare iisafe iior iiunsafe


Anode iicooling iichart ii- iiCorrect iiAnswers ii-Used iito iidetermine iihow iilong iithe iianode
iiwill iitake iito iicool iiwhen iiheated


Housing iicooling iichart ii- iiCorrect iiAnswers ii-Determines iihow iilong iithe iihousing iiwill
iitake iito iicool iiwhen iiheated