latent image


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Related to latent image: manifest image

image

 [im´ahj]
a picture or concept with more or less likeness to an objective reality.
body image see body image.
digital image a depiction recorded electronically to allow viewing or transmission on a computer.
image distributor beam splitter.
disturbed body image a nursing diagnosis defined as confusion in the mental picture of one's personal self. See also body image.
fluoroscopic image a visual depiction on a fluoroscopy screen.
image intensifier a fluoroscope that is electronically enhanced to produce a brighter image; see also automatic brightness control, brightness gain, and vignetting.
latent image the invisible change in radiographic film that is caused by x-radiation or light and is made visible by development of the film.
magnification image direct radiographic enlargement requiring a fractional focus tube of 0.3 mm or less.
manifest image the change on an x-ray film that becomes visible when the latent image undergoes appropriate chemical processing.
mirror image
1. the image of light made visible by the reflecting surface of the cornea and lens when illuminated through the slit lamp.
2. an image with right and left relations reversed, as in the reflection of an object in a mirror.
motor image the organized cerebral model of the possible movements of the body.
phantom image an artifact seen in conventional linear tomography.

latent image

an invisible image produced in a film emulsion by x-rays or visible light that can be converted into a visible image by development.

la·tent im·age

(lā'tĕnt im'ăj)
The undeveloped image on an exposed x-ray film; it becomes visible after chemical processing.

la·tent im·age

(lā'tĕnt im'ăj)
The undeveloped image on an exposed x-ray film; it becomes visible after chemical processing.

image

the picture reproduced on the x-ray film or by other radioimaging methods such as ultrasonography.

image amplifier system
includes amplifer and viewer or television camera and tape player.
image display modes
see ultrasonography, A-mode, B-mode and M-mode.
image formation
exposure of the film to the x-ray beam ionizing radiation or to other radiant energy forms causes ionic changes in the silver bromide crystals in the film emulsion so that it acquires a silver atom. It is the deposition of reduced silver atoms in particles or zones that causes the black zones or foci on the film. The amount of silver deposited depends on the intensity of the initial radiation x-ray exposure.
image intensification
a technique used to increase the brightness of the image while maintaining its sharpness. Used particularly in fluoroscopy and viewing directly or indirectly through a television camera and monitor, cineradiography, videotape or split-film device.
latent image
the invisible picture on the film after it has been exposed to the x-ray beam. It requires exposure to a developer and fixer before the image is visible and permanent.
weak image
said of x-ray films which lack density due to underexposure, too brief period of development, insufficient developer or developer temperature too low.
References in periodicals archive ?
There is no latent image in non-CR digital radiography, unless perhaps one considers the charges prior to readout by the semiconductor arrays.
Planar displays continue to deliver the brightness stability and latent image resistance for which EL has traditionally been known.
Also of interest is the examination of results for the latent image after an exposure or post-exposure bake step.
DataOverwriteSecurity System (DOSS) overwrites latent images and data on the hard drive automatically.
Data migration and conversion including de-duplication of 18 million tenprint records and search of all unknown latent images.
Greg Tricker has described his work as an uncovering of latent images with these emergent images being discovered and freed as he carves or paints.
Latent images on the internal hard drive are removed through the optional DataOverwriteSecurity System (DOSS), while confidential information can be safeguarded with the Unauthorized Copy Control feature that protects sensitive documents with an embedded message that appears if a document is copied.
The P4000 can not be fooled by fingerprint copies, latent images, gummy fingers or finger castings.
He warns that at the end of a machine's lease, it could be sold off or moved to a different department, yet those latent images remain in the device, thus potentially exposing data.