题目内容
What structure separates the thoracic cavity from the abdominal cavity?
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After a film is exposed, the target-film distance is doubled. The exposure time necessary to obtain a second film of equal density to the first film is
If the mA is increased while the kVp and exposure time are kept constant, the resulting films will _____.
In X-radiography, the ability to penetrate the test object is governed by _____.
A radiograph is taken by using 70kVp and 15mAs. If the radiograph is repeated using 80kVp, what mAs should be used to maintain the original density?
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