gray scale

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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.


The range of light or x-ray exposure acceptable with a given photographic emulsion. See: latitude film.
[L. latitudo, width, fr. latus, wide]

gray scale

the property in which intensity information in ultrasonography is recorded as changes in the brightness of the gray scale display.
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.

gray scale

a scale of intensities of the color gray. Of value in assessing radiographic and ultrasonographic results. See also B-mode ultrasonography.
References in periodicals archive ?
Kim and Afif [21] presented a cryptographically secure authentication watermarking technique for halftone and binary images.
Las figuras 8-10 muestran resultados de imagenes halftone producidas por el metodo de difusion de error.
Since the AM halftone methods generate items which are easily noticeable because of their size, the alternative methods were proposed.
The samples were printed with fulltone and halftone pattern (50%) in cyan color on polypropylene foil.
This ensure that the halftone image is shaded appropriately and retains the contours.
The voltage change on DD ([DELTA]U=300V), the printed screen dots will oscillate: in the area of 10% halftone value ([DELTA]d=6,82 [micro]m), in the area of 20% halftone value ([DELTA]d=8,10 [micro]m) and in the area of 30% halftone value ([DELTA]d=6,97 [micro]m).
Offset/screen combination permits using line-screen work together with halftone offset.
According to the university, the process means that laser printers, fax machines, photocopiers and other imaging equipment will be able to create halftones about 50 times faster than at present and that halftone reproduction in newspapers should substantially improve.
If the halftone screen that we are developing rapidly changes its shape through the grayscale, we can increase the number of discrete gray levels in this 2D simulation model in the course of experimenting.
Mark Samworth, vice president of technology, said the basic geometry of the conventional halftone dot has hardly changed since the inception of offset-litho around the late 19th century.
With fast high-resolution output, the cm3521 produces vivid and sharp images at true 8-bit color depth and 256 shades per pixel for smooth halftone and photo reproduction.
The nyloflex ACT is meant for combination printing, where one plate consists of both halftone and solid printing areas.