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COMPUTED TOMOGRAPHY: PRELIM_QUIZ2 WITH ANSWERS RESPECTIVELY.
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COMPUTED TOMOGRAPHY: PRELIM_QUIZ2 WITH ANSWERS RESPECTIVELY.
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COMPUTED TOMOGRAPHY:PRELIM_QUIZ2 WITH ANSWERS
RESPECTIVELY.
Main Components ANS - 1. The Gantry
2. The Patient Table
3. Data Acquisition System
4. Operating/Control Console
Gantry ANS - Donut-like or ring-shaped part of the CT Scanner.
It houses many of the components necessary to produce and detect X-rays.
These components are mounted on a rotating scan frame since transmission profiles have to be
recorded under different angles.
- it contains a control panel, display panel, an emergency stop button
Gantry ANS - - It is the largest component of the CT Installation
- It houses the x-ray tube, detectors, and DAS.
- t has a circular aperture in the middle gantry frame to allow patients to be positioned within the x-ray
field by the table assembly
70 to 90 cm ANS - range size of aperature of a Gantry
30 degrees ANS - Up to what angle can the gantry be tilted?
, Control Panels ANS - Located on either side of the gantry opening to allow the technologist to control
the alignment lights, gantry tilt, and movement of the table
Display Panel ANS - displays the gantry tilt, table height, position of the landmarks, scannable and tilt
range
Microphone ANS - Installed in the gantry to allow communication between the patient and the
technologist throughout the scanning procedure
Laser Light ANS - A part of a gantry, this is used to position the patient within the scanner
The X-axis - horizontal line
The Y - vertical line
The Z - line parallel to the patient in relation to the table
CT Gantry Internal Components ANS - 1. X-ray Tube
2. Filters and Collimators
3. Detector Assembly
4. Tube Controller
5. High Frequency Generator
6. Onboard and Stationary Components
X-ray Tube ANS - This is designed to handle a very large amount of stress
It creates/produces the x-ray photons that create the CT image. Its design is a modification of a standard
rotating anode tube. Tungsten is often used for the anode target material because it produces a higher
intensity
500k HU ANS - Anode heating capacity
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