Radiography Image Production and Off-Focus Radiation

Flashcards based on lecture notes covering x-ray tube components, off-focus radiation, image quality effects, histogram processing, and post-processing shuttering.

Anode target

The component of the x-ray tube that contains the focal spot.

Off-focus radiation origins

Radiation that is the product of electron interactions occurring within three components of the x-ray tube: the cathode assembly, vacuum envelope, and anode disk.

Patient tissue outside collimated borders

An image appearance caused by off-focus radiation interacting outside the primary collimated area.

Decreased spatial resolution

The loss of structural sharpness in a radiographic image caused by off-focus radiation within the primary beam being out of alignment with the primary beam.

Decreased contrast

The loss of visually distinct brightness levels resulting from off-focus radiation within the primary beam.

Primary x-rays

The type of x-rays that create diagnostic information in radiography.

Values of interest

The classification that a computer may mistakenly assign to off-focus radiation during the histogram process.

Post-processing shuttering

A technique used to correct the appearance of off-focus radiation by removing unwanted image areas such as bright white regions and collimator shadows.