If a computerized physician's order is sent to the local hospital for a blood test, and the physician's office has already been notified of the test findings, this order is

The concept of ALARA

a. allows x-ray exposure under all circumstances. b. necessarily requires a benefit vs. risk assessment by the ordering physician. c. permits the radiographer to alter physician orders in order to lessen dose. d. shifts the responsibility for exposure reduction to the ordering physician.

What gas or gas mixture does a patient breathe when the body plethysmography method is used?

A. He-O2 mixture B. 100% O2 C. room air D. 100% N2