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In the Compton interaction, to dislodge an outer-shell electron from its atomic orbit, the incoming x-ray photon must be able to transfer a quantity of energy:

A dose-response curve that could be used to represent the severity of biologic effects from radiation once a certain level of radiation was reached is said to be:

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?