CT Physics, Instrumentation and Imaging
Module A Test
1. Please match the following terms.
a.
b.
c.
d.
e.
f.
g.
Hounsfield and Ambrose 1972
Cormack and Hounsfield 1979
Tsien 1955
Kalender 1989
Siemens and Toshiba
Parallel beam geometry / translate rotate
Johann Radon
_______ Introduced computers in Radiology by using them for radiation dose
distribution
_______ Proved the concept of reconstructing an image from an infinite set of
projections
_______ Nobel Prize in Medicine for the development of Computerized Axial
Tomography
_______ Responsible for the 1st patient scanned at the Atkison-Morley’s Hospital
_______ Introduced the 1st Spiral/Helical CT Scanners at RSNA
_______ EMI
_______ Credited with having been the 1st to develop the Spiral/helical CT
scanner
2. This was the first scanner primarily developed to image the heart without the
detection of motion.
a. Fourth Generation
b. Electron Beam CT
c. Multi-slice scanner
d. Multi-detector (solid state sodium iodide)
e. Answer not given
3. CT fluoroscopy, three-dimensional imaging, CT angiography, and CT endoscopy
are all examples of:
a. Contrast studies in CT
b. Axial images
c. Volume scanning
d. Analog signals
4. ______ There are other uses for CT other than medicine. Currently CT is used in
fat stock breeding and violin authenticity verification.
5. ______ The reconstructed image is in numerical form and must be converted into
electrical signals for the technologist to view the image.
6. ______ The first reconstruction algorithm used by Hounsfield was based on
trigonometry.
7. ______ Data acquisition would not be possible without the attenuation properties
of the x-ray beam.
8. ______ Data acquisition, image reconstruction and image display are the 3 steps
to the formation of the CT image.
9. ______ The first CT scanner used an electron beam as the radiation source.
10. ______ Improvements in the image quality depended in part on improved spatial
resolution.
11. ______ The dynamic spatial reconstructor (DSR) was incorporated into the CT
scanner design in order to produce functional studies.
12. ______ Single slice, Multi slice, and Dual slice are all names for different types of
scanners.
13. ______ As scanners changed the scanners were grouped according to the
“generation”. The generation of a scanner is based on which manufacture made
the scanner.
14. ______ Ultrafast ceramic detectors helped to reduce patient dose by CT scanners.
15. ______ Several imaging parameters in CT affect dose including slice thickness.
CT Physics, Instrumentation and Imaging
Module A Test Key
1. C
G
B
A
D
F
E
2. B
3. C
4. T
5. T
6. F
7. T
8. T
9. F
10. T
11. T
12. T
13. F
14. T
15. T
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