Gonadal shielding may be found in one or more of the following forms: 1- Flat contact shields 2- Shadow shields 3- Shaped shields

A way to determine the effectiveness of the filtration in the x-ray tube is to perform a

The exposure rate permitted for image-intensified fluoroscopic units is (at the tabletop) is:

Which of the following has absorption characteristics that are closest to tissue?

EXTRA CREDIT: A cobalt-60 radiotherapy source, installed on January 1 of this year, had an initial activity of 6,000 Ci. Cobalt-60 has a radioactive half-life of 5.3 years. How much activity will remain after 21.2 years? Perform all calculations below. No credit given without calculations. Partial credit will be given for at least one correct answer.

Radiation dose in CT does not depend on filtration.

There is a direct relationship between the amount of light detected when a TLD crystal is heated and the dose of ionizing radiation received.

Which of the following exposure factors would produce the LOWEST patient dose, all other variables unchanged (e.g., field size, area of interest, SID, etc.)?

A dead-man switch is designed to operate by:

The device used to check for the presence of radioactive contamination on personnel leaving the “hot lab” is called a: