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Wael Hammad Questions
10601 Questions
In radiotherapy, why is the patient’s irradiation treatment “fractionated”, that is, consist of (say) 20 sessions and spread over (say) 4 weeks – rather than given all at 1 session?
Medicine
2022-10-21
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If a patient who has been administered a radiopharmaceutical containing technetium 99m (halflife = 6 hours), is allowed to go home 36 hours after the administration, what fraction of the original radioactivity is left in the patient (ignoring excretion from the body)?
Medicine
2022-10-21
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161
Which of the following statements about radioactivity is NOT correct?
Medicine
2022-10-21
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85
Exposing a foetus or young baby to x-rays should be avoided. What is the cause of the danger most likely to be due to?
Medicine
2022-10-21
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Which one of the following beams is the most penetrating?
Medicine
2022-10-21
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89
The contrast of a CT image displayed on a monitor may be increased by
Medicine
2022-10-21
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83
The advantage of Computed Tomography (CT) over conventional radiography is:
Medicine
2022-10-21
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137
One difference between the x-radiation in the primary beam and the scattered radiation is that:
Medicine
2022-10-21
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93
What is the purpose of an intensifying screen?
Medicine
2022-10-21
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87
Consider the “inverse square law”. Compared to being 1 m from a point x-ray source, what will be the photon flux at a distance of 4 m from the source?
Medicine
2022-10-21
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284
What is the purpose of adding filtration to an x-ray beam? To:
Medicine
2022-10-21
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102
To what energy can an x-ray tube that is operated at 110 kV accelerate electrons?
Medicine
2022-10-21
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What is a difference between x-rays and gamma rays?
Medicine
2022-10-21
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156
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10601
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