CT REGISTRY REVIEW (MIC) NEWEST UPDATED MULTIPLE AND SINGLE CHOICE COMBO EXAM |QUESTIONS AND ANSWERS (100% CORRECT) & 100% SUCCESS GUARANTEED

CT REGISTRY REVIEW (MIC) NEWEST
UPDATED MULTIPLE AND SINGLE CHOICE
COMBO EXAM |QUESTIONS AND ANSWERS
(100% CORRECT) & 100% SUCCESS
GUARANTEED




In order for an x-ray photon to be measured it must:
v v v v v v v v v v




1. enter the detector chamber
v v v v




2. be absorbed by the detector material
v v v v v v




3. be converted to a measurable event
v v v v v v vvvvvvvvvv ANS: 1,2,3 vvv




Which system component converts the projection attenuation data
v v v v v v v


into the proper digital form for the array processor?
v v v ANS: v v v v v v vvvvvvvvvv vv


analog-to-digital converter
v v




Which of the following is NOT a function of a PACS system?
v v v v v v v v v v v




a. reconstruction of the image from the raw data
v v v v v v v v




b. long term data storage
v v v v




c. digital distribution of images
v v v v v




d. image display for the radiologist
v v v v v vvvvvvvvvv ANS: reconstruction of vvv v


the image from raw data
v v v v v




Which of the following is not part of the CT tube?
v v v v v v v v v v

,a. tungsten target
v v




b. collimator
v v




c. rotating anode
v v




d. filament
v vvvvvvvvvv ANS: collimator vvv




Which of the following is FALSE regarding CT systems?
v v v v v v v v




1. they are limited to nonoblique transverse scanning
v v v v v v v




2. they cannot generate a straight coronal or sagittal image
v v v v v v v v v




3. hey have no moving parts
v v v v v vvvvvvvvvv ANS: 1,2,3 vvv




Xrays are used in CT because:
v v v v v




a. they are easily produced by the high frequency generator
v v v v v v v v v v




b. they are less harmful than the heating effects of microwave
v v v v v v v v v v


radiation
v




c. they penetrate the body according to specific attenuation
v v v v v v v v


characteristics of each tissue
v v v v




d. the FDA imposes no limit on the dose to the patient
v v v v v v v v v v v vvvvvvvvvv ANS: vv


C
v




Most of the commands from the technologists are received by the:
v v v v v v v v v v vv


ANS: operators console
vvvvvvvv vvv v




Xrays are produced whenever fast moving electrons collide with
v v v v v v v v


any form of matter because:
v v v ANS: The electron loses kinetic
v v vvvvvvvvvv vvv v v v


energy which is converted into the emission of an x-ray photon
v v v v v v v v v v v

,The mA determines the:
v v v vvvvvvvvvv ANS: quantity of x-ray photons
vvv v v v




Which of the following is a component NOT normally located in
v v v v v v v v v v


the gantry of a modern CT system?
v v ANS: array processor
v v v v v vvvvvvvvvv vvv v




Tube interscan delay time refers to:
v ANS: the time between v v v v vvvvvvvvvv vvv v v


the end of one scan and the start of the next scan during which the
v v v v v v v v v v v v v v v


tube will cool
v v v




Increased _______ will increase the likelihood that a given x-ray
v v v v v v v v v


will penetrate a material
v v v v




1. kV
v




2. mA
v




3. exposure time
v v vvvvvvvvvv ANS: 1 vvv




Which of the following are NOT commonly used on today's
v v v v v v v v v


commercially available CT scanners?
v v v v




1. xenon detectors
v v




2. fourth-generation technology
v v




3. continous rotation technology
v v v vvvvvvvvvv ANS: 1,2 vvv




Which of the following statements is FALSE regarding occurrences
v v v v v v v v


after an x-ray photon penetrates the detector aperture?
v v v v v v v v v




1. the photon can pass through the detector unmeasured
v v v v v v v v v

, 2. the photon is converted completely into a electron
v v v v v v v v




3. the measured signal in enhanced by an amplifier
v v v v v v v v vvvvvvvvvv ANS: 2 vvv




Scatter radiation is caused by:
v ANS: deflections from the v v v vvvvvvvvvv vvv v v


original trajectory of an x-ray photon through the patient
v v v v v v v v v




What control does the operator have over the x-rays in a CT exam?
v v v v v v v v v v v v v


ANS: the energy level and the quantity of x-rays can be
vvvvvvvvv vvv v v v v v v v v v


selected
v




Which of the following is the standard that's used to achieve
v v v v v v v v v v


compatibility for image transfer between various imaging
v v v v v v v


modalities, viewing stations, and printers in a hospital?
v v ANS: v v v v v v vvvvvvvvvv v


DICOM
vv




The enormous heat that builds up in the CT tube is caused by what?
v v v v v v v v v v v v v


ANS: Collision of the electron beam with the tungsten target
vvvvvvvvvv vvv v v v v v v v v


on the tube anode
v v v v




_________________ made helical imaging possible v v v v vvvvvvvvvv ANS: vv


Continuous rotation scanners
v v v




The patient table:
v v




a. may move continuously during the scan
v v v v v v




b. can never be positioned automatically by software due to safety
v v v v v v v v v v


precautions
v