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Which of the following needs the longest exposure for an X-Ray image?

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+1 vote
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in Clinical Science by (102k points)
Which of the following needs the longest exposure for an X-Ray image?

(a) Thoracic

(b) Abdomen

(c) Spine

(d) Pelvis

I had been asked this question during an internship interview.

This key question is from X-Ray in chapter Diagnostic Investigation via Imaging Techniques of Clinical Science

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Best answer
The correct option is (c) Spine

Easiest explanation: Spine needs around 0.20 seconds of exposure for the image to form properly. This can be because the spine faces a lot of obstruction when exposed to the X-Ray so needs almost twice the exposure time of thoracic and abdominal regions. They require only around 0.10 seconds of exposure.

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