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4. The energy electrons lose when colliding with electrons in the anode are released as heat, and

A. a) Electricity.
B. b) More electrons.
C. c) X-rays.

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3. How long does an X-ray exposure generally take?

A. a) Less than a second.
B. b) A couple of seconds.
C. c) A few minutes.

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Fluorescence is:

A. a) A bright light caused by an electric discharge
B. b) Electromagnetic (EM) radiation, emitted at a lower frequency than the incident radiation.
C. c) Light that is emitted by chemical reactions in the tissue.

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1. In the horizontal X-ray system, where is the detector system/cassette?

A. a) Above the patient.
B. b) Underneath the patient
C. c) At the sides, perpendicular to the patient.

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Try the same question 1 above – but this time using iodine-124 as the radioisotope. If a vial contains 600 MBq of iodine-124 (I-124) at 12:30 (14 June 2014), how much radioactivity will be present in the vial at 14:00 on the 15 June 2014? You will notice that there is a big difference between the answers in Questions 1 and 2. Please input your answer in MBq. ______

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4. The energy electrons lose when colliding with electrons in the anode are released as heat, and

A. a) Electricity. B. b) More electrons. C. c) X-rays.

3. How long does an X-ray exposure generally take?

Fluorescence is:

1. In the horizontal X-ray system, where is the detector system/cassette?

A. a) Electricity.
B. b) More electrons.
C. c) X-rays.