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COMPUTED TOMOGRAPHY: PRELIM_QUIZ1 well answered to pass
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COMPUTED TOMOGRAPHY:PRELIM_QUIZ1
Computed Tomography Scan - correct answer ✔✔Previously known as:
a. Computed Axial Tomography (CAT)
b. Computed Transaxially Tomography (CTAT)
c. Computed Reconstruction Tomography (CRT)
d. Digital Axial Tomography (DAT)
CT Scan - correct answer ✔✔It is a method of acquiring and reconstructing the image of a thin cross
section on the basis of measurements of attenuation.
Its machines uses a combination of X-rays and radiation detectors coupled with a computer to create
cross sectional image of any part of the body
Data Acquisition - correct answer ✔✔Refers to scanning the patient
Image Reconstruction - correct answer ✔✔Refers to the processing of the Data
Image Display - correct answer ✔✔Refers to displaying the image
Advantages of CT Scan - correct answer ✔✔1. It's painless, non-invasive and accurate (unless its
angiography)
2. Has the ability to image multiple organs all at the same time
3. Provides very detailed images of many types of tissue as well as the lungs, bones, and blood vessels
, 4. It's fast and simple; in emergency cases, they can reveal internal injuries and bleeding
5. It's cost-effective imaging tool for a wide range of clinical problems
6. It's less sensitivities to patient movement than MRI
7. Can be performed if you have implants
8. Provides real-time imaging, making it a good tool for guiding minimally invasive procedures such as
needle biopsies and needle aspirations.
9. A diagnosis determined by CT scanning may eliminate need for exploratory surgery and surgical biopsy
10. No radiation remains in a patient's body after a CT examination
11. X-rays used in CT scans should have no immediate side effects
Johann Karl August Radon - correct answer ✔✔He introduced the Radon Transformed
He demonstrated that the image of a three-dimensional object can be constructed from an infinite
number of two-dimensional images of the object
Godfrey N. Hounsfield - correct answer ✔✔He pioneered the CT scanner making him one of the greats in
the history of radiology and medicine.
For his work, he received the Nobel Prize in Physiology or Medicine in 1979
This was remarkable because he had no experience of working in the medical field but was an engineer
who hitherto had spent his career developing computers and radar
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