Upon completing an X-ray exposure and turning the equipment off, _____.
A. personnel should wait for a few minutes before entering the exposure area.
B. personnel should wear a lead-lined apron before entering-the exposure area.
C. personnel should enter the exposure area without fear of radiation exposure.
D. personnel should take a reading with a survey meter before entering the exposure area.
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Characteristic X-ray radiation provides the spectrums as followings except
A. Characteristic X-ray radiation is a discrete emission spectrum.
B. Characteristic X-ray radiation changes its energy when tube voltage varies.
C. Given the same amount of electron flow, a high tube voltage grants higher X-ray intensity.
D. In mammography over 80% radiation is caused by characteristic radiation.
The ratio of heat produced to x-rays produced in a typical diagnostic target is about
A. 1:99
B. 10:90
C. 50:50
D. 99:1
Which of the following description on bremsstrahlung radiation is not correct?
A. Bremsstrahlung radiation has a broad energy distribution, with the greatest number of x rays being produced at the low energies.
B. The general shape of the bremsstrahlung radiation is different for all x-ray imaging systems.
C. The maximum energy (in keV) of a bremsstrahlung x-ray is numerically equal to the kVp operation.
D. The greatest number of x-rays is emitted with energy approximately one third of the maximum energy.
German physicist, Wilhelm Roentgen, discovered the X-ray in 1895. What was the first human body part he tried to image?
A. Head
B. Hand
Chest
D. Foot
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