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Computed Tomography Ch 1-4 Quiz and answers respectively. $9.49   Add to cart

Exam (elaborations)

Computed Tomography Ch 1-4 Quiz and answers respectively.

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  • Computered Tomography
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  • Computered Tomography

Computed Tomography Ch 1-4 Quiz and answers respectively.

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  • August 3, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Computered Tomography
  • Computered Tomography
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Computed Tomography Ch 1-4 Quiz and
answers respectively.

In _________ compression, there is no loss of information in the compressed image. ANS - Lossless or
reversible



Lossy or irreversible compression involves at least 3 steps, image transformation, quantization, and
___________. ANS - Encoding



______ refers to using one or more software and or hardware techniques to reduce informaiton by
removing unnecessary data. ANS - Digital compression



Image postprocessing methods in CT are intended to: ANS - Enhance the diagnostic interpretation skills
of the radiologist.



______ is responsible for high speed processing of the input digital data. ANS - Internal image processor



Hounsfeld's work produced a technique that revolutionized medicine and diagnostic radiology. He called
the technique: ANS - computerized transverse axial scanning (tomography)



The formation of CT images by a CT scanner involves: ANS - Data acquistion, image reconstruction,
image display, manipulation, storage, recording and communication (All of the above)



The computer uses special mathematical techniques to reconstruct the CT image in a finite number of
steps called: ANS - Cone beam image reconstruction algorithm

Algebraic reconstruction technique

image reconstruction algorithms

ALL OF THE ABOVE

, Data acquisition refers to the systematic collection of information from the _____ to produce CT images
ANS - Patient



The process of changing the CT image gray scale is referred to as: ANS - Windowing



Which beam is used to scan a volume of tissue rather than a single? ANS - Spiral or Helical



What is the most recent MSCT scanner commercially available for clinical imaging for patients? ANS - 64
slice



What is the beam called when all the photons have the same energy? ANS - Homogenous



How many generations of computers are there? ANS - 5



An example of binary numbering is: ANS - 01011



The goal of CT is to overcome the limitation of radiology and tomography by achieving the following:
ANS - Minimal superimposition

Improving image contrast

Recording of very small differences in tissue contrast

ALL OF THE ABOVE



The first whole body CT Scanner was developed by: ANS - Dr. Robert Ledley



How many bits make a byte? ANS - 8



ROM stands for ANS - Read only memory



How many bytes in a gigabyte? ANS - 1,000,000,000

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