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CT EXAM #3 QUESTIONS AND ANSWERS
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CT EXAM #3 QUESTIONS AND ANSWERS
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CT EXAM #3 QUESTIONS ANDANSWERS
Three-dimensional imaging of vascular structures with an intravenous injection of
contrast media is called computed tomography angiography.
T or F - Answer-T
The size of the needle and site of injection are not important during a computed
tomographic angiography examination
T or F - Answer-False
During data acquisition in computed tomography fluoroscopy, the patient remains
stationary.
T or F - Answer-True
The goal of radiation therapy is to kill tumor cells without harming surrounding healthy
tissue
T or F - Answer-T
The maximum intensity projection visualization tool is the most frequently used in
computed tomographic angiography examinations to display the structure of vessels.
T or F - Answer-True
All of the following are steps crucial to performing a computed tomographic angiography
examination except:
*patient prep
*decreased collimation
*contrast media administration
*acquisition measures - Answer-decreased collimation
The maximum fluoroscopy time in a continuous imaging system is around
*50 sec
*100 sec
*300 sec
*200 sec - Answer-100 sec
,Which visualization technique uses all of the information in the axial data set to display
internal structures?
*volume rendering
*multiplanar reconstructions
*maximum intensity projection
*interactive cine - Answer-volume rendering
The computed tomography simulator features all of the following notable components
except:
*registration device
*small detector array
*large gantry array
*flat table with immobilization devices - Answer-small detector array
The computed tomography simulation process includes:
I. scan the patient in the computed tomography scanner
II. plan the treatment and computed tomography simulation
III. treatment setup - Answer-all 3
Cardiac computed tomography applications include all of the following except:
*ventricular function assessment
*gated stress imaging
*assessments of pulmonary veins
*coronary angiography - Answer-gated stress imaging
Which volume-rendering parameter refers to the degree that structures close to the user
obscure structures that are farther away?
*windowing
*brightness
*opacity
*accuracy - Answer-opacity
During the development of computed tomography fluoroscopy, the dose to the
________ of the operator was a concern.
*hands
*thyroid
*skin
*eyes - Answer-hands
Operators standing in the computed tomography room during the procedure must wear
all of the following except:
, *thyroid shield
*sterile gown
*lead glasses
*lead apron - Answer-sterile gown
The use of any medical technology for early detection of disease in asymptomatic
patients is referred to as:
*treatment
*screening
*prevention
*maintenance - Answer-screening
Computed tomography screening has been used in all of the following except:
*whole body screening
*lung screening
*colon screening
*breast screening - Answer-breast screening
Used to image asymptomatic patients - Answer-Computed tomography screening
Used to image critically ill patients - Answer-Portable multislice computed tomography
Real-time computed tomography - Answer-Computed tomography fluoroscopy
Imaging of vascular structures with the use of intravenous contrast - Answer-Computed
tomography angiography
Used to measure bone mineral density - Answer-quantitative computed tomography
Used in radiation oncology departments - Answer-computed tomography simulation
Computed tomographic angiography techniques have proved useful in imaging the
following:
1. coronary artery disease
2. renal vasculature
3. stroke - Answer-all 3
The selection of peak kilovoltage and milliamperage used in computed tomographic
angiography examinations is usually determined by:
1. abnormalities of the area being imaged
2. level of noise in the images
3. patient size - Answer-2 and 3
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