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Concerning the focal spot: a. A larger actual focal spot allows greater tube currents b. Increasing the anode angle increases the maximum permissible exposure factors that can be used c. A typical size of focal spot in general radiography is 1 mm d. Focal spot size has no effect on contrast e. A larger focal spot size increases the amount of scatter |
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Answer» a. True. b. True. Increasing the anode angle increases the size of the actual focal spot and so a greater tube current or kVp may be used. c. True. d. True. e. False. It does not affect scatter. |
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