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Any wall that the useful x-ray beam cannot be directed toward is call a

For which of the following diagnoses is an ERCP a useful procedure?  biliary tract calculi  patency of the biliary ducts  diverticula in the colon

Which type of radiation is produced when a high-speed electron is slowed down or suddenly stopped?

Methods of decreasing patient exposure during fluoroscopic procedures include:  position the image intensifier as far from the patient as possible  use the last image hold feature  use the largest FOV without magnification

The source of electrons within the x-ray tube is a result of

Which of the following is best demonstrated in a 25° RPO position with the central ray entering 1 inch medial to the elevated anterior superior iliac spine (ASIS)?

Biologic material is most sensitive to radiation under which of the following conditions?

If the measured dose for a given exposure is 50 mrem at a distance of 40 inches, what will be the dose if the distance is increased to 80 inches?

The term that refers to parts away from the source or beginning is

On the image below, the letter A is overlying which carpal bone?