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5 - Mock paper: paper 2

Published online by Cambridge University Press:  05 July 2014

Andrew Sizer  and
Neil Chapman
Andrew Sizer
Affiliation:
Shrewsbury and Telford NHS Trust
Neil Chapman
Affiliation:
University of Sheffield
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Summary

Answers to the questions in this chapter can be found in appendix 6.

1 What is the principle of DEXA scanning to assess bone mineral density?

  1. A The absorption of a single high-dose X-ray beam is measured at two different angles

  2. B The absorption of a single low-dose beam is measured at multiple intervals and analysed by a computer

  3. C The absorption of a single low-dose X-ray beam is measured at two different angles

  4. D Two high-dose X-ray beams are emitted and the absorption of the sof-tissue beam is subtracted from the total beam

  5. E Two low-dose X-ray beams are emitted and the absorption of the soft-tissue beam is subtracted from the total beam

2 In radiotherapy, what is the SI unit of absorbed radiation dose?

  1. A Curie

  2. B Gray

  3. C Joule

  4. D Rad

  5. E Sievert

3 What is the best description of the Doppler effect?

  1. A A stationary target absorbs more ultrasound than a moving target

  2. B A stationary target reflects more ultrasound than a moving target

  3. C The frequency of a transmitted and reflected ultrasound wave are always constant

  4. D The ultrasound wave reflected from a moving target has a different frequency from the transmitted wave

  5. E The ultrasound wave reflected from a moving target has the same frequency as the transmitted wave

Type
Chapter
Information
SBAs for the Part 1 MRCOG , pp. 91 - 110
Publisher: Cambridge University Press
Print publication year: 2012

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