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The current generation CT scanner use __________ for scanning

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The current generation CT scanner use __________ for scanning

(a) pencil beam and stationary detectors

(b) pencil beam and rotating detectors

(c) fan beam and detectors

(d) electron beam and detectors

The question was asked during an online exam.

Asked question is from Computerized Axial Tomography topic in division Diagnostic Investigation via Imaging Techniques of Clinical Science

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The correct answer is (d) electron beam and detectors

Explanation: In the olden generation of CT, the beam of X – Rays and detectors used to move together to scan and take the image. However, in the latest CT scanners, an electron gun fires an electron beam at the target rings, the focus of which is decided by a tungsten anode. This target rings give of X – Rays which are used to image the desired organ.  The X-Ray produced can move along a certain diameter. This system can take a better image of the heart.

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