CT Questions with Correct Answers 100% Pass

CT Questions with Correct Answers
100% Pass

The process of modifying pixel values by a mathematical formula is called:


Select one:


a. convolution


b. deconvolution


c. calculus


d. all of the above - ✔✔a. convolution


TEST QUESTION


To achieve coronal or sagittal sections with computed tomography:


Select one:


a. the gantry is repositioned


b. the patient is repositioned


c. reconfiguration software is implemented




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,d. none of the above - ✔✔c. reconfiguration software is implemented


TEST QUESTION


The primary mathematical method used in the creation of computerize medical images

is the ______ transformation.


Select one:


a. Pythagorean


b. Bohr


c. Einstein


d. Fourier - ✔✔d. Fourier


Because of their simplistic nature, first-generation CT scanners were much smaller than

those used today.


Select one:


True


False - ✔✔False


If the table is moving at 12 mm/sec., and a section thickness of 10 mm is being acquired,

what is the pitch? Answer to the second digit beyond the decimal point. - ✔✔1.20


TEST QUESTION




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,A CT imaging system produces which type of image?


Select one:


a. Axial


b. Biaxial


c. Fulcrum plane


d. Longitudinal


e. Transverse - ✔✔a. Axial


Modern pulsed CT scanners operate at:


Select one:


a. 120 kVp


b. 1 to 5 msec pulses


c. up to 1,000 mA


d. all of the above - ✔✔d. all of the above


A ____ artifact is caused by attenuation of the beam as it passes through the patient.


Select one:


a. beam-hardening




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, b. ring


c. star


d. streak - ✔✔a. beam-hardening


TEST QUESTION


The HU of water is always 1.


Select one:


True


False - ✔✔False


TEST QUESTION


A _____ artifact is caused by the presence of metal in the patient when performing CT.


Select one:


a. beam-hardening


b. ring


c. star


d. streak - ✔✔c. star


During CT imaging, beam hardening artifacts:




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