| ISIS | image selected in vivo spectroscopy; imaging science and information system; information system-imag... |
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| aud-vis | audiovisual |
| qv | as much as you desire [Lat. quantum vis]; which see [Lat. quod vide] |
| VIS | vaginal irrigation smear; venous insufficiency syndrome; vertebral irritation syndrome; visible; vis... |
| vis | vision, visual |
| UV/VIS | Ultraviolet, visible |
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| CADIA | Computer assisted densitometric image analysis |
| DIA | Digital image analysis |
| FAMIS | Factor Analysis of Medical Image Sequences |
| IA | Image Analysis |
| vis | 1. Force; power. 2. Physical force. Moral power. <physiology> Principle of vis viva, living force; the force of a body moving against resistance, or doing work, in distinction from vis mortua, or dead force; the kinetic energy of a moving body; the capacity of a moving body to do work by reason of its being in motion. See Kinetic energy, in the Note under Energy. The term vis viva is not usually understood to include that part of the kinetic energy of the body which is due to the vibrations of its molecules. Source: Websters Dictionary (01 Mar 1998) |
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| vis a fronte | A force acting from in front; an obstructive, restraining, or impeding force. (05 Mar 2000) |
| vis a tergo | A force acting from behind; a pushing or accelerating force. (05 Mar 2000) |
| vis conservatrix | The inherent power in the organism resisting the effects of injury. (05 Mar 2000) |
| vis vitae | <biology> The doctrine that all the functions of a living organism are due to an unknown vital principle distinct from all chemical and physical forces. Source: Websters Dictionary (01 Mar 1998) |
| quantum vis | See: q.v.. Origin: L. However much you wish (05 Mar 2000) |
| Abbe theory of image formation | <optics, physics> Abbe's theory is based on the fact that a non-self-luminous particle, which is illuminated by an extraneous source, gives rise to diffracted light rays, in addition to the dioptric pencil. He stated that to form a good microscopical image as many of the diffracted rays as possible should be intercepted by the objective. With closely ruled lines, his theory is easily demonstrated by observing the back lens of the objective, for here the diffracted rays can be observed directly if the aperture diaphragm is closed. It can be shown that, when the illumination is arranged to exclude the diffracted images, resolution is lost. (11 Mar 1998) |
| accidental image | Continuation of visual impression after cessation of stimuli causing the original image. (12 Dec 1998) |
| body image | A term for the concept which each individual has of his own body as an object in and bound by space, independently and apart from all other objects. (12 Dec 1998) |
| radiographic image enhancement | Improvement in the quality of an X-ray image by use of an intensifying screen, tube, or filter and by optimum exposure techniques. Digital processing methods are often employed. (12 Dec 1998) |
| radiographic image interpretation, computer-assisted | Computer systems or networks designed to provide radiographic interpretive information. (12 Dec 1998) |
| real image | An image formed by the convergence of the actual rays of light from an object. Synonym: inverted image. (05 Mar 2000) |
| catatropic image | <ophthalmology, physiology> The two images formed by the anterior and posterior surfaces of the cornea and the two images formed by the anterior and posterior surfaces of the lens. Synonym: catatropic image, Purkinje images, Sanson's images. (05 Mar 2000) |
| virtual image | <microscopy> Such as seen in a mirror or through a magnifier. A virtual image has no real existence in space as does a real image from a lens. It does have a definite location, however, caused by the angles of divergence of the rays received by the eye. This can be shown by the common school experiment of placing a pin coincident with its mirror image behind a sheet of glass acting as a partial mirror. Its location can also be placed in design by extrapolating backwards to a focus. If a magnifier is used as it should be, with the object at its focus, the virtual image is at infinity. The same is true for a microscope focused for the relaxed eye. See: distance of virtual image. (05 Aug 1998) |
| visual image | A collection of foci corresponding to all the luminous points of an object. (05 Mar 2000) |
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