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CT MIDTERM EXAM QUESTIONS WITH CCOMPLETE SOLUTIONS
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CT MIDTERM EXAM QUESTIONS WITH CCOMPLETE SOLUTIONS
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CT MIDTERM EXAM QUESTIONS WITHCCOMPLETE SOLUTIONS
During a mother's pregnancy which trimester would the embryo or developing fetus be
most affected by ionizing radiation?
A. 1st trimester
B. 2nd trimester
C.3rd trimester - Answer-A
Which of the following is NOT directly proportional to mAs?
A. Dose to the patient
B. The main energy of the X ray photons leaving the tube
C. The number of X-rays photons leaving the X-ray tube
D. X-ray tube heating - Answer-B
Which system component converts the projection attenuation data into the proper digital
form for the array processor?
A. Detector
B.Photodiode
C.Analog-to-digital converter
D. host computer - Answer-C
CT is commonly referred to as all of the following names EXCEPT:
A. Computerized axial tomograph
B. Digital subtraction angiography
C. CAT-Scan
D. Computed tomography - Answer-B
Which of the following is NOT a part of the CT tube?
A. Tungsten target
B. Collimator
C. Rotating anode
D. filament - Answer-B
The number of electrons that flow from the cathode to the anode in the tube is
controlled by the:
A. Anode target
B.Collimation
C. MA
D. KV - Answer-C
The enormous heat that builds up in the CT tube is caused by the:
A. Collision of the electron beam with the tungsten target on the tube anode
B. Electron beam between the cathode and the anode in the tube
, C. X-ray filter in the tube which absorbs the lower energy photons before they can enter
the patient
D. Intensity of the X-rays emitted from the tube - Answer-A
X-rays are used in CT because:
A. They are easily produced by the high-frequency generator
B. The FDA imposes no limit on the dose to the patient
C. They are less harmful than the heating effects of microwave radiation
D. They penetrate the body according to specific attenuation characteristics of each
tissue - Answer-D
Most of the command from the technologists are received by the
A. operator console
B. Amplifier
C. host computer
D. array processor - Answer-A
which of the following are quantitative tools that are available on CT scanners?
A. A distance and angle measurement tools
B. measure volume of various anatomical structures
C. analyze the density of Hu of a structure - Answer-A,B,C
Which of the following CT scanner designs utilizes an electron gun?
A. MDCT
B. 1st generation CT
C. electron beam CT
D. PET/CT - Answer-C
The _____ determines how penetrating the X ray beam will be
A. Pitch
B. KVP
C. rotation time
D. Ma - Answer-B
which of the following equipment below allows the technologist to interact with the CT
scanner? yes
A. Monitor
B. Mouse
C. Keyboard
D. hard drive - Answer-A,B,C
during a CT scan the patient must be monitored
A. Occasionally
B. visually and verbally
C. by a nurse
D. by a pulse oximeter - Answer-B
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