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Unit 2: Operation and Analysis of Imaging Equipment

20252m

The Doppler effect in ultrasound is used to measure:
(i) Bone density
(ii) Tumor size
(iii) Blood flow velocity
(iv) Magnetic field strength

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Answer

Correct option: (iii) Blood flow velocity

The Doppler effect measures the frequency shift produced when ultrasound reflects from moving blood cells. The shift is related to the velocity and direction of blood flow, so Doppler ultrasound is widely used in vascular and cardiac imaging.

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