A) ECG
B) EEG
C) CT-scan
D) Endoscopy
Correct Answer: C
Solution :
X-rays are used in CT- scan (computed tomographic scanning). It uses X-rays but employs a computer for reconstructing the image instead of directly recording it on a photographic film. This technique is used in the diagnosis of disease of brain, spinal cord. chest etc. It is also useful in detecting tumours.
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