CT 2 quizzes || 100% Accurate Answers.
The first clinical prototype CT scanner was used to scan a woman patient with a suspected brain
lesion.
T or F correct answers True
The first CT scanners' x-ray tube and detector movement was described as translate-rotate-stop-
rotate because they moved in a straight line across the patient.
T or F correct answers True
ALARA is an acronym for as low as reasonably achievable.
Tor F correct answers True
The original term used to describe imaging of a specific layer or section of the body was
transverse axial tomography.
T or F correct answers True
In Hounsfield's original experiments in CT, the apparatus took 9 hours to scan the object.
T or F correct answers False
How long did Hounsfield's original experiment take? correct answers About 9 days
The following developments in CT were introduced during the period between 1973 and 1983
except: correct answers Multislice CT (MSCT)
Isodose curves are a dose descriptor used in reporting radiation doses in CT.
T or F correct answers True
Who developed the first whole-body CT scanner? correct answers Dr. Robert Ledley (1974)
Which type of high-speed CT scanner was first introduced to image the cardiovascular system
without artifacts caused by motion of the heart? correct answers Electron Beam (EBCT)
Scanners
Determining tissue types in CT slices is referred to as volume formation.
T or F correct answers False
Volume formation correct answers stacking images to form a volume with some preprocessing.
Classification correct answers Determining the tissue types in the slices
Which acronym has been established by the Radiological Society of North America (RSNA) and
the accepted term for use within the radiologic community and major American radiology
journals? correct answers CT
, The detectors convert the attenuation data (X-Ray Photons) into______ signals correct answers
Electrical
Which form of imaging primarily uses dual-source CT (DSCT) scanners? correct answers
Cardiac imaging
Why do DSCT scanners have 2 X-ray tubes and detectors? correct answers For cardiac imaging
in a very short amount of time
The radiation used by Hounsfield in his original experiments was: correct answers gamma rays
used from an americium gamma source coupled to a crystal detector.
What contribution did Cormack make to the development of clinical CT? correct answers He
developed the solutions to the mathematical problems in CT
Which of the following refers to modifying CT data to make the images more useful to the
observer? correct answers image manipulation/ image postprocessing
3D algorithms, or rendering techniques, transform the transaxial CT data into simulated 3D
images.
T or F correct answers True
Which company pioneered the development of the first clinically useful CT scanner? correct
answers EMI
When was the first clinical prototype CT brain scanner (EMI Mark I) installed at Atkinson-
Morley's Hospital. correct answers In 1971
What form of archiving has proven most popular among CT departments? correct answers
Picture Archiving and Communication System (PACS)
Sectional images are obtained from all the following except. correct answers conventional
radiography
CT fluoroscopy is a clinical tool allowing the reconstruction and display of images in real time
with variable frame rates.
T or F correct answers True
When did the U.S. FDA approve real-time CT fluoroscopy as a clinical tool for use in radiology.
correct answers In 1996
When a large set of transmission measurements is collected from the patient at different locations
and is used to build up an image of internal anatomy, it is referred to as correct answers image
reconstruction from projections
QC tests in CT meet only quantitative criteria to indicate the scanner is in working condition.
The first clinical prototype CT scanner was used to scan a woman patient with a suspected brain
lesion.
T or F correct answers True
The first CT scanners' x-ray tube and detector movement was described as translate-rotate-stop-
rotate because they moved in a straight line across the patient.
T or F correct answers True
ALARA is an acronym for as low as reasonably achievable.
Tor F correct answers True
The original term used to describe imaging of a specific layer or section of the body was
transverse axial tomography.
T or F correct answers True
In Hounsfield's original experiments in CT, the apparatus took 9 hours to scan the object.
T or F correct answers False
How long did Hounsfield's original experiment take? correct answers About 9 days
The following developments in CT were introduced during the period between 1973 and 1983
except: correct answers Multislice CT (MSCT)
Isodose curves are a dose descriptor used in reporting radiation doses in CT.
T or F correct answers True
Who developed the first whole-body CT scanner? correct answers Dr. Robert Ledley (1974)
Which type of high-speed CT scanner was first introduced to image the cardiovascular system
without artifacts caused by motion of the heart? correct answers Electron Beam (EBCT)
Scanners
Determining tissue types in CT slices is referred to as volume formation.
T or F correct answers False
Volume formation correct answers stacking images to form a volume with some preprocessing.
Classification correct answers Determining the tissue types in the slices
Which acronym has been established by the Radiological Society of North America (RSNA) and
the accepted term for use within the radiologic community and major American radiology
journals? correct answers CT
, The detectors convert the attenuation data (X-Ray Photons) into______ signals correct answers
Electrical
Which form of imaging primarily uses dual-source CT (DSCT) scanners? correct answers
Cardiac imaging
Why do DSCT scanners have 2 X-ray tubes and detectors? correct answers For cardiac imaging
in a very short amount of time
The radiation used by Hounsfield in his original experiments was: correct answers gamma rays
used from an americium gamma source coupled to a crystal detector.
What contribution did Cormack make to the development of clinical CT? correct answers He
developed the solutions to the mathematical problems in CT
Which of the following refers to modifying CT data to make the images more useful to the
observer? correct answers image manipulation/ image postprocessing
3D algorithms, or rendering techniques, transform the transaxial CT data into simulated 3D
images.
T or F correct answers True
Which company pioneered the development of the first clinically useful CT scanner? correct
answers EMI
When was the first clinical prototype CT brain scanner (EMI Mark I) installed at Atkinson-
Morley's Hospital. correct answers In 1971
What form of archiving has proven most popular among CT departments? correct answers
Picture Archiving and Communication System (PACS)
Sectional images are obtained from all the following except. correct answers conventional
radiography
CT fluoroscopy is a clinical tool allowing the reconstruction and display of images in real time
with variable frame rates.
T or F correct answers True
When did the U.S. FDA approve real-time CT fluoroscopy as a clinical tool for use in radiology.
correct answers In 1996
When a large set of transmission measurements is collected from the patient at different locations
and is used to build up an image of internal anatomy, it is referred to as correct answers image
reconstruction from projections
QC tests in CT meet only quantitative criteria to indicate the scanner is in working condition.
