image intensifier


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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.

im·age am·pli·fi·er

a device for converting a low light level fluoroscopic image to one that can be seen by the eye in a lighted environment; usually consists of an electronic light amplifier chained to a television tube.
Synonym(s): image intensifier

image intensifier

an electronic device used to produce a fluoroscopic image with a low-radiation exposure. A beam of x-rays passing through the patient is converted into a pattern of electrons in a vacuum tube. The electrons are accelerated and concentrated onto a small fluorescent screen, where they present a bright image, which is generally displayed on a video monitor.

image intensifier

A device used in radiology by means of which weak X-ray images obtained by low dosage radiation may be converted into television images and improved in brightness and contrast by purely electronic means. This allows continuous X-ray sceening for various procedures, such as the insertion of arterial catheters, without exposing the patient to unacceptably large doses of radiation.
References in periodicals archive ?
We are now in the third and fourth generation of image intensifiers following the introduction of what are known as channel plates that provide better all-round image resolution.
This provides covert illumination and identification of targets up to one km away, and is particularly useful in illuminating darkened windows, and providing facial identification that is normally impossible with an image intensifier alone.
The AN/AVS-9 Image Intensifier Set was first developed by ITT in 1992 as the "F4949 Aviator Night Vision System," designed specifically to meet the requirements of active and reserve aviators.
Tenders are invited for Supply of Mobile c-arm image intensifier unit
This chip will be incorporated with the camera's image intensifier to form the new LLL camera.
The result was the remote-controlled CROWS, with a sensor suite that permits target engagements under day and night conditions and includes a daytime video camera, image intensifier, heavy thermal weapon sight and laser rangefinder.
Requirements include production and delivery of AN/PVS-7D and AN/PVS-14 infantry night vision goggles and spare MX-11620 image intensifier tubes.
ITT Night Vision's Enhanced Night Vision Goggle (ENVG) allows for improved mobility and situational awareness by providing the soldier with the combined images from an image intensifier and a thermal imager.
We believe the advances in image intensifier technology and the subsequent new generations of night vision devices will lead to an expansion of their use both domestically and globally," stated Neil A.
com) with image intensifier tubes and system for the military and law enforcement.
TubeMaster is a national supplier of x-ray tubes, x-ray image intensifiers, camera tubes, cameras and complete image intensifier systems for medical applications.
published by IMV Medical Information Division, capital budgets in angio labs are increasing, as the labs are gearing up to purchase flat panel digital detectors to replace their image intensifier capability.

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