xeroradiography

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xeroradiography

 [ze″ro-ra″de-og´rah-fe]
the making of radiographs by a dry, totally photoelectric process, using metal plates coated with a semiconductor such as selenium; the image produced by this process differs from conventional x-ray in that margins between tissues of varying densities are more clearly defined. Hence, xeroradiography is especially beneficial in the diagnosis of breast tumors. It does, however, require higher doses of radiation. Called also xerography.
negative mode xeroradiography a xeroradiographic image that is blue and white but that has been reversed so that white represents the dense areas.
positive mode xeroradiography a xeroradiographic image that is blue and white, with blue representing the dense areas.

xe·ro·ra·di·og·ra·phy

(zē'rō-rā'dē-og'ră-fē),
Radiography using a specially coated charged plate instead of x-ray film, developing with a dry powder rather than liquid chemicals, and transferring the powder image onto paper for a permanent record; edge enhancement is inherent.
Synonym(s): xerography

xeroradiography

/xe·ro·ra·di·og·ra·phy/ (zēr″o-ra″de-og´rah-fe) the making of radiographs by a dry, totally photoelectric process, using metal plates coated with a semiconductor, such as selenium.

xeroradiography

[-rā′dē·og′rəfē]
Etymology: Gk, xeros + L, radiare, to emit rays; Gk, graphein, to record
a diagnostic x-ray technique in which images are produced electrically rather than chemically, permitting lower exposure times and radiation energies than those of ordinary x-rays. The latent image is made visible with a powder toner similar to that used in a copying machine. The powder image is transferred and heat-fused to a sheet of paper. The images exhibit "edge contrast" because of the shape of the electric fields that pull toner onto the plate. Such edge contrast is useful for identifying minute calcifications in the breast. Xeroradiography is used primarily for mammography. Also called xerography.

xe·ro·ra·di·og·ra·phy

(zēr'ō-rā'dē-og'ră-fē)
Radiography using a specially coated charged plate instead of x-ray film, developing with a dry powder rather than liquid chemicals, and transferring the powder image onto paper for a permanent record. Also called xerography.

xeroradiography

A form of X-ray screening for breast cancer in which the image is formed on special photographic paper instead of on transparent film. Xeroradiographs can be viewed directly without special lighting. Also known as xeromammography.

xe·ro·ra·di·og·ra·phy

(zē'rō-rā'dē-og'ră-fē)
Radiography using a specially coated charged plate instead of x-ray film, developing with a dry powder rather than liquid chemicals, and transferring the powder image onto paper for a permanent record; edge enhancement is inherent.
Synonym(s): xerography.

xeroradiography,

n the use of xerography to produce an image electrically rather than chemically, permitting lower exposure times and lower energy levels of roentgen rays.

xeroradiography

the making of radiographs by a dry, totally photoelectric process, using metal plates coated with a semiconductor, such as selenium.
The image produced by this process differs from conventional x-ray in that margins between tissues of varying densities are more enhanced. Hence, xeroradiography is especially beneficial in the diagnosis of mammary tumors. Structures such as tendons are also visually enhanced. It does, however, require higher doses of radiation. Called also xerography.