image receptor


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image receptor (IR)

a device that changes the x-ray beam into a visible image. An image receptor may be a radiographic film and cassette, a phosphorescent screen (used in fluoroscopy or computed radiography), or a special detector placed in a table or upright bucky diaphragm (used in direct digital radiography).

image receptor

Abbreviation: IR
Any device used in radiology to detect the energy released by the imaging instrument after it passes through the imaged body part.
See also: receptor
References in periodicals archive ?
Future studies could compare retake rates between these image receptors to determine if one results in a higher retake rate so that educational resources can be directed to address challenges associated with specific devices.
These devices are adjusted so that the collimator shutters automatically provide an x-ray beam equal to the image receptor with any film size and at all standard SIDs.
By selecting higher kVp, the operator increases the average beam energy of the x-rays (known as "beam hardening") and therefore increases the fraction of the entrance beam that passes through to the image receptor.
Studies have shown that procedures with a large air gap between the image intensifier and the patient in particular do not need the grid because the air gap allows for escape of a good portion of the scattered x-rays before interaction with the image receptor.
16) Adjustable collimators limit the x-ray beam to the size of the active image receptor and ideally to the region of interest.
surface of the image receptor required to produce a single image b.
The mammographer pulls the medial aspect of the breast up and positions it on the image receptor in the lateral medial position.
The image receptor should be against the chest wall superior to the breast.
To position the breast, the mammographer centers the breast's superior surface on the image receptor, holding the breast up in position while compression is applied.
If necessary, the x-ray tube assembly can be angled upward 5 [degrees] to ensure contact between the lateral portion of the breast and the image receptor.
With the filter positioned between the patient and the image receptor, entrance surface exposure does not differ with or without the filter because x-rays are compensated after passing through the patient.