The kAmerican kRegistry kof kRadiologic kTechnologists k(ARRT) kwas kput kin kplace kto k- kANSWER: k
k➡ kestablished kstandards kand kexaminations kto kcertify ktechnologists. kand kmaintains ka klists kof
kregistered ktechnologists.
The kAmerican kSociety kof kRadiologic kTechnologists k(ASRT) kare ka k- kANSWER: k k➡ kProfessional
korganization kcontinuing keducation kpromoting kresearch kand kguidelines kfor kradiography
kinstruction
The kA.L.A.R.A kconcept.... k- kANSWER: k k➡ k1. kAll kexposure kmust khave ka kbenefit
2. kAll kexposures kALARA
3. kDose klevels kshould kremain kbelow
4. kMaximum kallowed
5. k(Ten kCommandments)
Position kpatient kand kequipment kfor kprocedure k(Digital) k- kANSWER: k k➡ kpositions kpatient kbody
kpart
positions kimage kreceptor
positions kx-ray kmachine
Apply klead kshielding kto kprotect kpatient
What kare ksome kof kthe kduties kof ka klimited kradiography+ k- kANSWER: k k➡ kEvaluate kradiographic
kimages kand ksend kto kphysician kfor kinterpretation
Scatter kradiation k( kon ka kx-ray ktable) kis kwhat k- kANSWER: k k➡ kA kform kof ksecondary kradiation
kthat koccurs kwhen kan kx-ray kbeam khas kbeen kdeflected kfrom kits kpath kby kinteraction kwith
kmatter kis kcalled
Digital ksystems koperate kat kwhat kspeed kclass? k- kANSWER: k k➡ khave ka kmuch kwider kdynamic
krange k(latitude) kthan kfilm kscreen ksystems kresulting kin kfewer kretakes
What kis ka krange kof kexposures kthe kimaging ksystem kcan kreceive kand krender kas kan kimage ktone
k# k- kANSWER: k k➡ kdigital kreceptors
What kdoes kdigitization k/ kto kdigitize kdo k- kANSWER: k k➡ k-assign ka knumber kto keach kpixel-assign
ka kshade kof kgrey kto keach knumber
What khas kcontinuous kvariation kwith kinfinite kpossible kvalues k- kANSWER: k k➡ kanalog
kinformation
,What kis ka karea kof kunsharpness kat keach kimage kborder kdue kto kfocal kspot ksource kof
kradiation.i.e. ksoft ktissues kedges karound k# k- kANSWER: k k➡ kpenumbra
What kis kcaused kby kmovement kof kthe kx-ray ktube, kthe kpt kor kIR kduring kexposure-voluntary kand
kinvoluntary kmotion k- kANSWER: k k➡ kmotion kunsharpness
If kthe kincrease kin kkVp kwhat khappen kto kattenuation k# k- kANSWER: k k➡ kit kis kdecrease
What kdoes kdifferential kattenuation kmean k- kANSWER: k k➡ keach ktissue kattenuates kthe kbeam
kdifferently kor kabsorb kradiation kdifferently
A kvariation kin kbeam kdensity kas kit kpasses kthru kpt kis kcalled kwhat k- kANSWER: k k➡ ksubject
kcontrast
low kcontrast khas kmany kwhat kcolors k- kANSWER: k k➡ kshades kof kgray kinstead kof kblack kand
kwhite, k-long kscale
What kdoes kdeviation kindex k(DI) kmean k- kANSWER: k k➡ kvariation kfrom kTEI k(Target kExposure
kIndex) kor kthe kamount kof kunderexposure kor koverexposure
What kis kmeant kby kthe kexposure kindicator k- kANSWER: k k➡ ka knumeric krepresentation kof kthe
kquantity kof kexposure kreceived kby ka kdigital kimage kreceptor, kand ktells kyou kwhether kor knot kthe
kradiograph kis kover kor kunder kexposed
What kis kdigital kImaging k- kANSWER: k k➡ ka kprocess kthrough kwhich ka kpicture kis kconverted kinto
ka kseries kof ksquare kelectronic kdots kknown kas kpixels
also ka kterm kis kexposure kindicator kof kthe kradiograph
The knumber kof kprotons kin kthe kxray kbeam k/ kmAs kare kcalled k- kANSWER: k k➡ kquantity
MA kdefinition k- kANSWER: k k➡ kquantity kper ksec
, If ka kfocal kspot ksize kis ksmaller kyou kwill kget kwhat k# k- kANSWER: k k➡ kbetter ksharpness
What kis k54 kV kthrough ktube kcircuit kmakes k54,000 kV k(54kV) k- kANSWER: k k➡ ktransferring kvolts
x-ray k(outgoing kcurrent) khas kwhat k- kANSWER: k k➡ khigh kvoltage: k110 kkV
current: k100 kmA
DC kcurrent
x-ray kIncoming kcurrent kare k- kANSWER: k k➡ klow kvoltage: k110 kV
current: k100 kA
AC kcurrent
Low kvoltage kcircuit kis kcontrol kby kwhat k# k- kANSWER: k k➡ kControl kPanel/ kcontrol kcircuit
A kfull kwave krectification ksystem khas k- kANSWER: k k➡ krequires k4 kdiodes
produces ktwice kas kmuch kradiation kper ksecond kas khalf kwave krectified ksystem
main kswitch kdoes kwhat k- kANSWER: k k➡ kthe kswitch kthat kgenerates kthe kpower kto kthe kx-ray
ktube
timer kand kexposure kswitch k- kANSWER: k k➡ kAllows kthe kelectrons kto kflow kfrom kthe kcathode kto
kthe kanode kfor ka kspecific kperiod kof ktime. kit kis klocated kon kthe kprimary kside kof kthe khigh kvoltage
ktransformer. kMechanical.
Part kwhich klets kprimary kradiation kleaves kin kall kdirection k- kANSWER: k k➡ kthe kx-ray ktube
x-rays kare kabsorbed, kscattered, ktransmitted kthrough kwho k# k- kANSWER: k k➡ kthe kpatient
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