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Advantages of Computed Tomography and Data Acquisition Basics

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Advantages of Computed Tomography and Data Acquisition Basics

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Questions and Answers

What is the maximum diameter of the patient aperture in a CT gantry?

90 cm

110 cm

50 cm

70 cm (correct)

Why is the anode-cathode axis perpendicular to the patient axis in a CT machine?

To minimize photoelectric absorption

To increase patient dose

To reduce the heel effect (correct)

To reduce radiation intensity at the detector array

What type of generator is used to minimize photoelectric absorption in a CT machine?

Low-voltage generator

High-frequency generator (correct)

Three-phase generator

Direct current generator

What is the typical anode heat capacity in a CT machine?

6 MHU Signup and view all the answers

How much does a high MH generator contribute to achieving high X-ray intensity in a CT machine?

$10$ MH Signup and view all the answers

What type of voltage generators are commonly used in CT imagers?

Three-phase or high-frequency voltage generators Signup and view all the answers

Why does the high-voltage generator aim to reduce bone attenuation relative to soft tissue in CT imaging?

To allow a wider dynamic range of the image Signup and view all the answers

What is the purpose of using large-diameter, thick anode disks rotating at 10,000 RPM in a CT machine?

For rapid heat dissipation Signup and view all the answers

Which component houses the X-ray source, detector array, and collimator assembly in a CT gantry?

'The gantry' Signup and view all the answers

What is done by the operating console on a CT scan machine?

Imaging control and image manipulation. Signup and view all the answers