Computed Tomography for Technologists 2nd
Edition Exam Review Question with Correct
Verified Answers latest update
,Introduction:
This document contains a complete set of exam review questions
with correct, verified answers based on the textbook Computed
Tomography for Technologists, 2nd Edition. It covers essential CT
concepts such as image quality, artifacts, quality assurance, data
acquisition, reconstruction techniques, contrast media use,
radiation dose, and clinical protocols for brain, chest, cardiac, and
abdominal imaging. This updated review material is ideal for
technologists preparing for certification exams and professional
practice.
Exam Questions and Answers:
What is a partial scan?
A. A scan that collects two matching samples taken 180degrees
apart
B. A scan that collects data from a 360 degree tube arc
C. A scan that collects data from a 360 degree tube arc plus the
width of the field of view
D. A scan that collects data from 180 degrees tube arc plus the
degree of arc of the fan angle --- correct answer ---D. A scan that
collects data from 180 degrees tube arc plus the degree of arc of the
fan angle
,What is the true test of the quality of a specific image?
A. Whether it serves the purpose for which it was acquired
B. Whether it has a limiting resolution of 71lp/mm or greater
C. Whether is has an MTF of greater than 1
D. Whether pixel size is .5mm or smaller --- correct answer ---A.
whether it serves the purpose for which it was acquired
What two main features are assessed to measure image quality?
A. mAs and kVp
B. spatial resolution and contrast resolution
C. temporal resolution and the degree of motion artifact
D. focal spot size and DFOV --- correct answer ---B. spatial
resolution and contrast resolution
Which of the following is an imaging challenge that depends on
contrast resolution?
A. A calcified nodule in the lung
B. Tiny contrast filled arteries that are just 1mm apart
C. Bony erosion in the ossicles of the internal auditory canal
D. Distinguishing between white matter and gray matter of the
brain --- correct answer ---D. distinguishing between white matter
and gray matter of the brain
, What is spatial frequency?
A. the number of line pairs visible per unit length
B. the ratio of the accuracy of the image compared with the actual
object scanned
C. the ratio of pixel size to slice thickness
D. the number of xray photons detected per pixel --- correct answer
---A. the number of line pairs visible per unit length
A graphical representation of the CT system's capability of passing
information through it to the observer is called:
A. interpolation
B. modulation transfer function (MTF)
C. receiver operator characteristics
D. contrast detail response --- correct answer ---B. modulation
transfer function (mtf)
Using a standard 512 matrix for all studies, which contains the
smallest pixel?
A. A scan of the internal auditory canals in which DFOV is 16cm
B. A scan of the brain in which the DFOV is 25cm
C. A scan of the chest in which DFOV is 35cm
D. A scan of the abdomen in which DFOV is 42cm --- correct answer
---A. a scan of the internal auditory canals in which DFOV is 16cm
Edition Exam Review Question with Correct
Verified Answers latest update
,Introduction:
This document contains a complete set of exam review questions
with correct, verified answers based on the textbook Computed
Tomography for Technologists, 2nd Edition. It covers essential CT
concepts such as image quality, artifacts, quality assurance, data
acquisition, reconstruction techniques, contrast media use,
radiation dose, and clinical protocols for brain, chest, cardiac, and
abdominal imaging. This updated review material is ideal for
technologists preparing for certification exams and professional
practice.
Exam Questions and Answers:
What is a partial scan?
A. A scan that collects two matching samples taken 180degrees
apart
B. A scan that collects data from a 360 degree tube arc
C. A scan that collects data from a 360 degree tube arc plus the
width of the field of view
D. A scan that collects data from 180 degrees tube arc plus the
degree of arc of the fan angle --- correct answer ---D. A scan that
collects data from 180 degrees tube arc plus the degree of arc of the
fan angle
,What is the true test of the quality of a specific image?
A. Whether it serves the purpose for which it was acquired
B. Whether it has a limiting resolution of 71lp/mm or greater
C. Whether is has an MTF of greater than 1
D. Whether pixel size is .5mm or smaller --- correct answer ---A.
whether it serves the purpose for which it was acquired
What two main features are assessed to measure image quality?
A. mAs and kVp
B. spatial resolution and contrast resolution
C. temporal resolution and the degree of motion artifact
D. focal spot size and DFOV --- correct answer ---B. spatial
resolution and contrast resolution
Which of the following is an imaging challenge that depends on
contrast resolution?
A. A calcified nodule in the lung
B. Tiny contrast filled arteries that are just 1mm apart
C. Bony erosion in the ossicles of the internal auditory canal
D. Distinguishing between white matter and gray matter of the
brain --- correct answer ---D. distinguishing between white matter
and gray matter of the brain
, What is spatial frequency?
A. the number of line pairs visible per unit length
B. the ratio of the accuracy of the image compared with the actual
object scanned
C. the ratio of pixel size to slice thickness
D. the number of xray photons detected per pixel --- correct answer
---A. the number of line pairs visible per unit length
A graphical representation of the CT system's capability of passing
information through it to the observer is called:
A. interpolation
B. modulation transfer function (MTF)
C. receiver operator characteristics
D. contrast detail response --- correct answer ---B. modulation
transfer function (mtf)
Using a standard 512 matrix for all studies, which contains the
smallest pixel?
A. A scan of the internal auditory canals in which DFOV is 16cm
B. A scan of the brain in which the DFOV is 25cm
C. A scan of the chest in which DFOV is 35cm
D. A scan of the abdomen in which DFOV is 42cm --- correct answer
---A. a scan of the internal auditory canals in which DFOV is 16cm
