CT Physics Trivia Quiz

24 Questions | By Radgirl86 | Last updated: Mar 27, 2022 | Total Attempts: 10903

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CT Physics- Computed Tomography is a popular term. We've designed here an interesting 'CT Physics Trivia Quiz' to test your knowledge about computed tomography and its related concepts. Do you think you'll be able to pass this test? Let's see how much you can score. We'll give you a certificate in the end that will display your final scores. So, get ready and start answering these questions. Wishing good luck to you!

Questions and Answers

1.

Computed Tomography (CT) results in a/an
- A.
  
  Analog image
- B.
  
  Linear image
- C.
  
  Digital image
- D.
  
  Image in time
2.

Which of the following scientists were instrumental in the initial development of CT?1. Alan Cormack2. Raymond Damadian3. Geodfrey Hounsfield4. Paul Lauterbur
- A.
  
  Only 1, 2, and 3 are correct
- B.
  
  Only 1 and 3 are correct
- C.
  
  Only 2 and 4 are correct
- D.
  
  Only 4 is correct
- E.
  
  All are correct
3.

The principal advantage of CT over projection radiography is
- A.
  
  Speed of image acquisition
- B.
  
  Energy resolution
- C.
  
  Contrast resolution
- D.
  
  Spatial resolution
4.

Computed tomography is otherwise identified as
- A.
  
  Emission tomography
- B.
  
  Transmission tomography
- C.
  
  Reflection tomography
- D.
  
  Temporal tomography
5.

When compared to projection radiography, conventional tomography shows
- A.
  
  Better spatial resolution
- B.
  
  Improved contrast resolution
- C.
  
  Reduced patient dose
- D.
  
  Less operator involvement
6.

Which of the following involves emission of a signal from a patient?
- A.
  
  CT
- B.
  
  Diagnostic ultrasound
- C.
  
  Magnetic resonance imaging
- D.
  
  Projection radiography
7.

The data acquisition in CT results in a/an
- A.
  
  Oblique image
- B.
  
  Transverse image
- C.
  
  Sagittal image
- D.
  
  Coronal image
- E.
  
  Volume image
8.

Which of the following are characteristic limitations of CT?1. spatial resolution2. artifact generation3. z-axis resolution4. patient dose
- A.
  
  Only 1, 2, and 3 are correct
- B.
  
  Only 1 and 3 are correct
- C.
  
  Only 2 and 4 are correct
- D.
  
  Only 4 is correct
- E.
  
  All are correct
9.

A characteristic feature of a projection radiograph is
- A.
  
  Poor spatial resolution
- B.
  
  Lengthy data acquisition
- C.
  
  Tissue superimposition
- D.
  
  Excessive patient dose
10.

Which of the following finds application in bone mineral assay for evaluation of osteoporosis?
- A.
  
  Radioisotope emission tomography
- B.
  
  Conventional tomography
- C.
  
  CT
- D.
  
  Projection radiography
11.

Which of the following involves emission of a signal from a patient?
- A.
  
  CT
- B.
  
  Diagnostic ultrasound
- C.
  
  Projection radiography
- D.
  
  Radioisotope imaging
- E.
  
  Spiral CT
12.

Compared to projection radiography, conventional tomography results in improved contrast resolution because
- A.
  
  Imaging time is reduced
- B.
  
  Out of plane tissues are blurred
- C.
  
  Tissues are superimposed
- D.
  
  Precise beam collimation is employed
13.

Computed tomography results in improved contrast resolution because
- A.
  
  Digital techniques are employed
- B.
  
  Tissue superimposition is reduced
- C.
  
  Tissues are superimposed
- D.
  
  Precise beam collimation is employed
14.

The mathematics of back projection applied to image reconstruction in CT is credited to:
- A.
  
  Alan cormack
- B.
  
  Raymond Damadian
- C.
  
  Frank Lauterbur
15.

Place the following in chronological order1. CT2. electron beam CT (EBCT)3. multiseciton computed tomography4. Spiral CT
- A.
  
  1,2,3,4
- B.
  
  1,2,4,3
- C.
  
  1,3,2,4
- D.
  
  1,4,2,3
- E.
  
  1,3,4,2
16.

The term "projection" when applied to CT, refers to
- A.
  
  Speed of image acquisition
- B.
  
  A data set representing x-ray attenuation in the patient
- C.
  
  The size of the x-ray beam projected on the patient
- D.
  
  The shape of the x-ray beam projected on the patient
- E.
  
  The mathematics of image reconstruction
17.

Compared to projection radiography, conventional tomography will improve1. contrast resolution2. patient dose3. superimposition of tissues4. spatial resolution
- A.
  
  Only 1, 2, and 3 are correct
- B.
  
  Only 1, and 2 are correct
- C.
  
  Only 2 and 4 are correct
- D.
  
  Only 4 is correct
- E.
  
  All are correct
18.

Which of the following image modalities are likely to have lsess scatter radiation affecting the image?
- A.
  
  Fluoroscopy
- B.
  
  Projection of radiography
- C.
  
  Conventional tomography
- D.
  
  CT
- E.
  
  Radioisotope emission tomography
19.

What is the principal cause of reduced contrast in projection radiography?
- A.
  
  Useful beam radiation
- B.
  
  Scatter radiation
- C.
  
  Leakage radiation
- D.
  
  Collimation
- E.
  
  KVp
20.

The first CT image was demonstrated by
- A.
  
  Alan Cormack
- B.
  
  Raymond Damadian
- C.
  
  Geodfrey Hounsfield
- D.
  
  Frank Lauterbur
- E.
  
  Larry Rothenberg
21.

The principle advantage of Ct over conventional tomography is
- A.
  
  Speed of image acquisition
- B.
  
  Reduced patient dose
- C.
  
  Improved contrast resolution
- D.
  
  Improved spatial resolution
- E.
  
  Fewer artifacts
22.

Which of the following imaging modalities appeared first
- A.
  
  Emission imaging with radioisotopes
- B.
  
  Diagnostic ultrasound
- C.
  
  Projection radiography
- D.
  
  Electron beam CT (EBCT)
- E.
  
  Spiral CT
23.

Image presentation in conventional tomography is
- A.
  
  Axial
- B.
  
  Coronal
- C.
  
  Sagittal
- D.
  
  Transverse
- E.
  
  Volumetric
24.

When compared to projection radiography, conventional tomography shows
- A.
  
  Better spatial resolution
- B.
  
  Less tissue superimposition
- C.
  
  Reduced patient dose
- D.
  
  Relaxed quality control