单选题

As the ALARA (as low as is reasonably achievable) principle) presented, which one of the followings is NOT correct.

A The minimum number of radiographs is taken and minimum fluoroscopic screening time used.

B US or MRI should be used where possible.

C Excessive patient dose in the pursuit of a good quality image is acceptable.

D Extra measures may be taken to minimize radiation dose including
Adjusting CT scanning parameters for children.

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正确答案：A （备注：此答案有误）

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