SRT modules review EXAM QUESTIONS AND VERIFIED
ANSWERS | 100% CORRECT | GRADED A+ | GUARANTEED
SUCCESS.
Helical scanning motion was first made possible by the unique construction of
the ____________ scanner.
A) fourth generation B) fifth generation C) sixth generation D) seventh
generation - ANSWER>>7th
The type of beam geometry used in modern CT scanners is called:
A) fan beam. B) wide beam. C) pencil beam. D) cone beam. - ANSWER>>cone
beam
Which of the following is not a component of the CT gantry?
A) X-ray tube B) Array processor C) Slip rings D) Digital acquisition system -
ANSWER>>array processor
Detector systems in which the elements are not all the same size are referred to
as:
A) adaptive arrays. B) volumetric arrays. C) symmetric arrays. D) unbalanced
arrays. - ANSWER>>adaptive arrays
The ___________ method of data acquisition gathers image data in distinct
sections and is sometimes describes as having a "start/stop" motion.
A) spiral B) sequential C) helical D) volume - ANSWER>>sequential
When pitch is less than 1, the resulting bands of data are:
A) adjacent. B) distinct. C) overlapped. D) gapped - ANSWER>>overlapping
,All of the following are characteristics of beam-shaping filters, except: A)
they are physical devices.
B) they change the spatial distribution of the beam.
C) they change the digital appearance of images.
D) they remove lower-energy x-rays from the beam. - ANSWER>>they change
digital appearance of images
The primary data processing component of the CT system is the:
A) array processor. B) digital acquisition system. C) PACS. D) amplifier. -
ANSWER>>array processor
An increase in pitch also results in increased:
A) patient dose. B) scan speed. C) image quality. D) scan length. -
ANSWER>>scan speed
Which component of the CT gantry supplies electrical power to the x-ray tube
and transfers the signals from the detectors to the computer?
A) Generator B) Slip rings C) Photomultiplier D) Data acquisition system -
ANSWER>>slip rings
The first generation CT scan pattern was called _______ acquisition.
A) translate and rotate B) step-and-shoot C) helical D) linear -
ANSWER>>translate and rotate
The largest piece of the CT device is called:
A) the gantry. B) the processor. C) the housing. D) the ring. - ANSWER>>gantry
When considering detector efficiency, the measure of how consistently the
detectors respond is called:
A) capture efficiency. B) absorption efficiency. C) stability. D) response time. -
ANSWER>>stability
, Which of the following is false regarding conventional axial scanning compared
to helical scanning?
A) Axial scanning requires more contrast media.
B) Axial scanning has greater potential for misalignment between scans.
C) Axial scanning is more sensitive to patient motion.
D) Axial scanning results in poorer image quality. - ANSWER>>more sensitive to
patient motion
The number of detectors the scanner uses to collect data for a particular scan is
determined by the:
A) scan field of view. B) display field of view. C) pitch. D) slice thickness. -
ANSWER>>SFOV
All of the following types of exams typically use a large SFOV, except for:
A) chest exams. B) spine exams. C) extremity exams. D) skull exams. -
ANSWER>>skull
Matrix size never changes, but the pixel size can vary based on the selected: A)
scan field of view. B) pitch. C) kVp. D) mAs. - ANSWER>>SFOV
The element of a photomultiplier tube that converts the initial pulse of light to
electrons is the: '
A) semiconductor. B) photocathode. C) dynode. D) scintillator. -
ANSWER>>photocathode
The ability of a detector to produce the same output given the same input is
called its: A) reproducibility. B) efficiency. C) stability. D) dynamic range. -
ANSWER>>reproducibility
Compared to helical scanning, axial scanning is associated with reduced:
ANSWERS | 100% CORRECT | GRADED A+ | GUARANTEED
SUCCESS.
Helical scanning motion was first made possible by the unique construction of
the ____________ scanner.
A) fourth generation B) fifth generation C) sixth generation D) seventh
generation - ANSWER>>7th
The type of beam geometry used in modern CT scanners is called:
A) fan beam. B) wide beam. C) pencil beam. D) cone beam. - ANSWER>>cone
beam
Which of the following is not a component of the CT gantry?
A) X-ray tube B) Array processor C) Slip rings D) Digital acquisition system -
ANSWER>>array processor
Detector systems in which the elements are not all the same size are referred to
as:
A) adaptive arrays. B) volumetric arrays. C) symmetric arrays. D) unbalanced
arrays. - ANSWER>>adaptive arrays
The ___________ method of data acquisition gathers image data in distinct
sections and is sometimes describes as having a "start/stop" motion.
A) spiral B) sequential C) helical D) volume - ANSWER>>sequential
When pitch is less than 1, the resulting bands of data are:
A) adjacent. B) distinct. C) overlapped. D) gapped - ANSWER>>overlapping
,All of the following are characteristics of beam-shaping filters, except: A)
they are physical devices.
B) they change the spatial distribution of the beam.
C) they change the digital appearance of images.
D) they remove lower-energy x-rays from the beam. - ANSWER>>they change
digital appearance of images
The primary data processing component of the CT system is the:
A) array processor. B) digital acquisition system. C) PACS. D) amplifier. -
ANSWER>>array processor
An increase in pitch also results in increased:
A) patient dose. B) scan speed. C) image quality. D) scan length. -
ANSWER>>scan speed
Which component of the CT gantry supplies electrical power to the x-ray tube
and transfers the signals from the detectors to the computer?
A) Generator B) Slip rings C) Photomultiplier D) Data acquisition system -
ANSWER>>slip rings
The first generation CT scan pattern was called _______ acquisition.
A) translate and rotate B) step-and-shoot C) helical D) linear -
ANSWER>>translate and rotate
The largest piece of the CT device is called:
A) the gantry. B) the processor. C) the housing. D) the ring. - ANSWER>>gantry
When considering detector efficiency, the measure of how consistently the
detectors respond is called:
A) capture efficiency. B) absorption efficiency. C) stability. D) response time. -
ANSWER>>stability
, Which of the following is false regarding conventional axial scanning compared
to helical scanning?
A) Axial scanning requires more contrast media.
B) Axial scanning has greater potential for misalignment between scans.
C) Axial scanning is more sensitive to patient motion.
D) Axial scanning results in poorer image quality. - ANSWER>>more sensitive to
patient motion
The number of detectors the scanner uses to collect data for a particular scan is
determined by the:
A) scan field of view. B) display field of view. C) pitch. D) slice thickness. -
ANSWER>>SFOV
All of the following types of exams typically use a large SFOV, except for:
A) chest exams. B) spine exams. C) extremity exams. D) skull exams. -
ANSWER>>skull
Matrix size never changes, but the pixel size can vary based on the selected: A)
scan field of view. B) pitch. C) kVp. D) mAs. - ANSWER>>SFOV
The element of a photomultiplier tube that converts the initial pulse of light to
electrons is the: '
A) semiconductor. B) photocathode. C) dynode. D) scintillator. -
ANSWER>>photocathode
The ability of a detector to produce the same output given the same input is
called its: A) reproducibility. B) efficiency. C) stability. D) dynamic range. -
ANSWER>>reproducibility
Compared to helical scanning, axial scanning is associated with reduced:
