phantom image


Also found in: Dictionary, Thesaurus, Encyclopedia.

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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
References in periodicals archive ?
In Figure 8, the reconstructed lung phantom images are shown for a simulation of clinical image.
Figure 6(a) shows the density profile in the phantom image Figure 4(a), while, in Figure 6(b), the red and blue lines show the density profiles of the corresponding rows in Figures 4(d) and 5(c), respectively.
In this section, two different phantom images were introduced to the local reconstruction experiment.
Socrates does indeed speak of beautiful offspring as the possible outcome of his technique.(25) Since, however, he says they are not his, are we allowed to suppose that Theaetetus inspired in him a phantom image of Theaetetus that he generously imputed to Theaetetus himself?.
(a) Gaussian random sampling and (b) radial sampling using a Shepp-Logan phantom image.
To present the performance of our proposed method, we applied both of the methodologies on a synthetic phantom image and a real image to obtain the appropriate ground truth edges.
The missing dialogue Philosopher, which would have been the truth of which the Sophist and Statesman are two phantom images, could never have been written without Plato's reversion to Socrates' or Theodorus's narration of it.
The image has been finished by classification based on image frequency, and the phantom image is denoted as p(m, n).
The personal details like name, address, date of birth and passport number are embedded in the phantom image. The existing passports will be replaced by the new version upon their expiry only.
In some SACD cases (and DVD-A cases, too) there have been token center feeds, but that is not the case here, with the soundstage between the speakers dominated by a broad but still well-defined, two-channel phantom image. Yes, this is, as usual, a Chesky 4.1 recording and not a 5.1 job.
It is based on evaluating a phantom image using measurements described in [section] 900.12(e)(1) and (2) concerning daily and weekly quality control tests.
A visual comparison of the results achieved for the phantom image is drawn in Figure 9.