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Unit 2: Operation and Analysis of Imaging Equipment

20252m

What is used to detect gamma rays in nuclear medicine?
(i) [unclear in source]
(ii) [unclear in source]
(iii) CT-Scan
(iv) MRI

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Answer

Answer: Gamma camera / scintillation detector

In nuclear medicine, gamma photons are detected using a gamma camera, whose detector system commonly uses a scintillation crystal such as NaI(Tl) coupled to photodetectors. The detector converts gamma-ray energy into electrical signals for image formation.

The OCR of the paper has lost some answer choices, but CT and MRI do not directly detect gamma rays.

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