gray scale


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scale

 [skāl]
1. a thin flake or compacted platelike body, as of cornified epithelial cells. See also squama.
2. a scheme or device by which some property may be measured (as hardness, weight, linear dimension).
3. to remove incrustations or other material from a surface, as from the enamel of teeth.
absolute scale (absolute temperature scale)
1. one with its zero at absolute zero (−273.15°C, −459.67°F).
ASIA scale a descriptive tool developed by the American Spinal Injury Association (ASIA) as a part of the complete classification of patients with spinal cord injuries. Called also Frankel Classification. See accompanying table.
Bayley S's of Infant Development a psychological test for assessing development of infants, using motor, mental, and behavioral developmental scales.
Borg scale a numerical scale for assessing dyspnea, from 0 representing no dyspnea to 10 as maximal dyspnea.
Brazelton Neonatal Behavioral Assessment scale a behavioral assessment scale used to evaluate the interactive behavior of a newborn by its responses to environmental stimuli.
Celsius scale (C) a temperature scale with zero at the freezing point of water and the normal boiling point of water at 100 degrees. The abbreviation 100°C should be read “one hundred degrees Celsius.” (For equivalents of Celsius and Fahrenheit temperatures, see Appendix.)
centigrade scale one with 100 gradations or steps between two fixed points, as the Celsius scale.
Fahrenheit scale (F) a temperature scale with the freezing point of water at 32 degrees and the normal boiling point of water at 212 degrees. The abbreviation 100°F should be read “one hundred degrees Fahrenheit.” (For equivalents of Fahrenheit and Celsius temperatures, see Appendix.)
French scale one used for denoting the size of catheters, sounds, and other tubular instruments, each French unit (symbol F) being approximately 0.33 mm in diameter.
Glasgow Coma scale a standardized system for assessing response to stimuli in a neurologically impaired patient, assessing eye opening, verbal response, and motor ability. Reaction scores are depicted in numerical values, thus minimizing the problem of ambiguous and vague terms to describe the patient's neurologic status. (See accompanying Table.) The total score is obtained by adding E, M, and V; a score of 7 or less indicates coma and a score of 9 or more rules out coma.
Global Assessment of Functioning (GAF) scale a hundred-point scale used as axis V of DSM-IV to assess a client's recent and current levels of social, psychological, and occupational functioning.
gray scale a representation of intensities in shades of gray, as in gray-scale ultrasonography.
interval scale a scale having equal numerical distances between intervals in addition to mutually exclusive categories, exhaustive categories, and rank ordering but no zero point.
Karnofsky scale (Karnofsky performance scale) a widely used performance scale, assigning scores ranging from 0 for a nonfunctional or dead patient to 100 for one with completely normal functioning.
Kelvin scale an absolute scale in which the unit of measurement, the kelvin, corresponds to that of the Celsius scale; therefore the ice point is at 273.15 kelvins.
Likert scale a tool used to determine opinions or attitudes; it contains a list of declarative statements, each followed by a scale on which the subject is to indicate degrees of intensity of a given feeling.
Neonatal Behavior Assessment scale Brazelton Neonatal Behavioral Assessment Scale.
performance scale a scale that measures a patient's performance status, serving as a prognostic indicator of seriousness of disease or disability. The most widely used scale is the Karnofsky scale.
Problem Rating scale for Outcomes see problem rating scale for outcomes.
semantic differential scale a measurement device that consists of two opposite adjectives with a seven-point scale between them; each item under examination is assigned to a specific point on the scale.
temperature scale one for expressing degree of heat, based on absolute zero as a reference point, or with a certain value arbitrarily assigned to such temperatures as the ice point and boiling point of water.

gray-·scale ul·tra·so·nog·ra·phy

the display of the ultrasound echo amplitude or signal intensity as different shades of gray, improving image quality compared to the obsolete black and white presentation.

lat·i·tude

(la'ti-tūd),
The range of light or x-ray exposure acceptable with a given photographic emulsion. See: latitude film.
[L. latitudo, width, fr. latus, wide]
A description of the number of colours or shades of gray a monitor can display or a scanner can process; the higher the bit depth, the higher the number of colour hues that can be supported

gray scale

Imaging See Ultrasonography InformaticsSee Bit depth.

gray-scale ul·tra·so·nog·ra·phy

(gră'skāl ŭl'tră-sŏ-nog'ră-fē)
The display of the ultrasound echo amplitude or signal intensity as different shades of gray, improving image quality compared with the obsolete black-and-white presentation.
References in periodicals archive ?
Gray scale USG in combination with color Doppler and spectral Doppler is proposed as the first and foremost diagnostic modality in patients with ovarian tumor, so as to establish the definite diagnosis of malignancy early in the course of the disease.
A dual watermarking scheme is presented in which the watermarks are either a gray scale image or visually meaningful gray scale logo instead of a noise type Gaussian sequence.
The gray scale values revealed increasing populations of bacteria from 102 to [10.sup.8] CFU attached to stainless steel, glass, polycarbonate, and polyvinyl chloride.
Have them create a gray scale and apply this information to their drawings.
Gray scale uses 8 bits to represent each pixel, providing the capability of representing up to 256 shades ranging from pure white through gray to pure black.
EBSCO offers a combination of black/white and gray scale PDF images to ensure fast download times.
Instead, images are generated by high-resolution video in combination with microscope optics, with edge readings on a gray scale of zero to 255 for more accurate resolution and finite edge detection.
Another issue, and one that applies to all digitally driven LCDs, concerns the optimum design of gray scale. Between the threshold and saturation voltages, voltage-to-luminance transfer functions for LCDs are inherently linear.
They also have a 20-page automatic feeder, 400 x 400 dpi interpolated resolution and 64-shade gray scale.
By reducing the resolution of the x-ray from diagnostic quality to "consultative" quality of 1024 by 768 by 8 bits of gray scale (1,024 by 768 by 256 bits of data) that can be presented on a standard Super VGA computer monitor, the image will pass over the 9,600 baud modem in 5.83 hours.
Other features include: polling (an electronic signal that lets another fax know when it should transmit), normal and fine modes, a 16-level gray scale, paper cutter, 10-page feed, and a 60-number memory.
But that glow's wavelengths actually reproduce the gray scale of the dollar bill image, Sailor says.