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grid

 [grid]
1. a grating.
2. in radiology, a device consisting essentially of a series of narrow lead strips closely spaced on their edges and separated by spacers of low density material; used to reduce the amount of scattered radiation reaching the x-ray film.
3. a chart with horizontal and perpendicular lines for plotting curves.
Amsler grid see Amsler charts.
baby grid a direct-reading chart on infant growth.
cross-hatched grid two linear grids that are superimposed at right angles to each other, used for maximal scatter cleanup.
Cross-hatched grids are fabricated by sandwiching two linear grids together so that their grid strips are perpendicular. From Bushong, 2001.
grid cutoff differences in radiographic intensity that are caused by improper focusing of the lead lines of a grid.
focused grid a linear grid in which all of the lead strips are aligned in a tilted fashion toward a centering point.
linear grid a grid designed to permit the passage of the primary beam by having lead lines aligned in the same direction separated by radiolucent interspacing material. There are two types, parallel and focused.
Wetzel grid a direct-reading chart for evaluating physical fitness in terms of body build, developmental level, and basal metabolism.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

grid

(grid),
1. A chart with horizontal and perpendicular lines for plotting curves.
2. In x-ray imaging, a device formed of lead or aluminum strips for preventing scattered radiation from reaching the x-ray film.
[M.E. gridel, fr. L. craticula, lattice]
Farlex Partner Medical Dictionary © Farlex 2012
GRID. An early (pre-1984) name for AIDS, based on the link between a collapsed immune system and the known association with male homosexuality
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

GRID

Gay-related immune deficiency An acronym used early in the AIDS epidemic, as the first cases affected homosexual/gay ♂. See AIDS.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

grid

(grid)
1. A chart with horizontal and perpendicular lines for plotting curves.
2. x-ray imaging A device formed of lead strips for preventing scattered radiation from reaching the x-ray film.
[M.E. gridel, fr. L. craticula, lattice]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

grid

(grid)
1. A chart with horizontal and perpendicular lines for plotting curves.
2. In x-ray imaging, device formed of lead or aluminum strips for preventing scattered radiation from reaching the x-ray film.
[M.E. gridel, fr. L. craticula, lattice]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
The results indicated that the shortest distance obtained by the different algorithms was the same for the same grid map. Nevertheless, the corresponding parameter combinations were different, which proved that the ACA parameters were coupled with each other.
The factors and their groups of factor, as well as the associated basic map and grid map that are used in the overlay analysis are described in Table 3, and the mapping of location factors and the associated maps is shown in Figure 1.
The objective function, defined by the command variables, is applied to the action determination grid map and produces
The terms [m.sup.(o)s.sub.i,j], [m.sup.(e)s.sub.i,j] and [m.sup.(o,e)s.sub.i,j] are taken from sensor model as per the range detacted by sensor and [m.sup.(o)em.sub.i,j], [m.sup.(e)em.sub.i,j] and [m.sup.(o,e)em.sub.i,j] are taken from existing grid map (initial condition of every indivisual cell is considred as 1, i.e don't know condition)
For the repertory grid maps, further bases of competition were elicited from detailed comparisons among sub-sets of three organizations drawn at random from those named for the visual card sort (see Bannister and Mair 1968).
In the well-lit ivory-tone corridor, the carpets are a symbolic representation of the hutongaACAOs grid map, with its texture and lines filled with water aACoewealthaACA[yen] in gold accents.
We design a combat scenario to validate our SMDM and the RBPF: on a grid map, a soldier moves to a predefined destination and tries to get far from a patrolling vehicle at the same time.
The definition is consistent with the grid map. In the following, the planar transformation is defined, which will be used to find the best matching between two partial maps.
STEP 1: We've turned Santa's Grotto into a grid map and referenced it A-Z and 1-1,500.