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Unit 2: Operation and Analysis of Imaging Equipment

20252m

Which imaging modality uses ionizing radiation?
(i) X-ray
(ii) MRI
(iii) Gamma camera
(iv) CT-scan

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Answer

Correct options: (i) X-ray and (iv) CT-scan

Both conventional X-ray imaging and CT use ionizing X-ray radiation. MRI and ultrasound do not use ionizing radiation.

Exam note: If the paper expects only one option, CT-scan may be intended depending on the original wording, but scientifically both X-ray and CT are ionizing-radiation modalities.

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