Exam 11: Control of Scatter Radiation

The three primary factors influencing the intensity of scatter in the image-forming beam are _____.

The x-ray interaction that contributes to the clear parts of the image is _____.

A fixed aperture diaphragm should leave a _____ cm unexposed border on the film.

Beam restriction with a(n)_____ is only accurate at a fixed SID.

Approximately _____% of the x-ray beam incident on the patient is transmitted through the patient without interaction to become part of the image-forming beam.

Scatter radiation increases as _____ increases.

How can you improve image contrast with a heavy patient without increasing patient dose?

Contrast resolution is improved by _____.

The use of a compression device will increase _____.

The positive beam limiting device (PBL)assures that the x-ray beam is collimated to _____.

Photoelectric interactions increase when _____ is decreased.

Compton scatter contributes to _____.

Federal regulations passed in _____ required that positive beam limiting devices be on all manufactured x-ray collimators.

Decreasing the kVp will increase _____.

Image-forming x-rays include those which have been _____.

The x-rays that are transmitted through the patient without interaction contribute to _____.

Which kVp selection would result in the most scattered x-rays in the image-forming beam?

Lowering kVp _____ patient dose and _____ image contrast.

The most commonly used beam restricting device is the _____.

The use of _____ improves contrast and reduces patient dose.