characteristic curve

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char·ac·ter·is·tic curve

sensitometric curve of radiographic film, a plot of the film density versus the logarithm of the relative exposure.
Farlex Partner Medical Dictionary © Farlex 2012


(kurv) [L. curvus, bent, crooked]
A bend, chart, or graph.

bell curve

Normal distribution.

curve of Carus

See: curve of Carus

characteristic curve

Sensitometric curve.

dental curve

Curve of Spee.

D log E curve

Sensitometric curve.

dose response curve

A graph charting the effect of a specific dose of drug, chemical, or ionizing radiation.

dye-dilution curve

A graph of the disappearance rate of a known amount of injected dye from the circulation; used to measure cardiac function.

epidemic curve

A chart or graph in which the number of new cases of an illness is plotted over time.

Gaussian curve

Normal distribution.

growth curve

A graph of heights and weights, head circumference, and body mass index of infants and children of various ages. A line connecting the data points produces the curve. Usually the changes in height and weight are shown on the same chart. Growth charts are specific for age and gender.

learning curve

The effect of learning or practice on the performance of an intellectual or physical task. The term describes the acquisition of competence with experience, time, and training.

normal curve

Normal distribution.

receiver operating curve

Abbreviation: ROC curve
A plot of the fraction of true positives test results versus the fraction of false positive test results; the sensitivity of a test versus (1-the test specificity).
Synonym: receiver operating characteristic

sensitometric curve

In radiographic film analysis, the curve derived by graphing the exposure to the film versus the film density. Analysis yields information about the contrast, speed, latitude, and maximum and minimum densities of the film or film-screen system. Digital radiography systems exhibit linear curves.
Synonym: characteristic curve; D log E curve; Hurter and Driffield curve

curve of Spee

See: curve of Spee

Stephan curve

See: Stephan curve

survival curve

In radiobiology, a dose response curve.

time-temperature cooling curve

The mathematical relation that plots the physical and chemical behaviors of dental (and other) materials as their temperature decreases over time.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
4, we present the I-V characteristic curves obtained via application of each method, along with the sample points taken from the empirical curve for RMSE computation.
Or, "Water films and scaling of soil characteristic curves at low water contents," Water Resources Research, vol.
Uchimura, "Effects on dry density and grain size distribution on the soil-water characteristic curves of sandy soils," Soil and Foundations, vol.
Similarly, the permeability coefficient characteristic curves of two kinds of red mud also reveal the significant hysteresis effect.
In fact, the power source should provide a broad range voltage output and usually a high-power margin dependent on its output voltage-current characteristic curve.
* Line 1 is characteristic curve of the fan at the speed [N.sub.1]
Caption: Figure 6: Response characteristic curves of simulation verification.
Figure 5 shows the characteristic curves of relationship between the amplitude and the amplitude of velocity disturbance term [[OMEGA].sub.1] with different magnetic induction intensity [B.sub.0z] (h = 8 mm, R = 1m).
In this paper the investigation is done for the effects of Parallel misalignment (0mm - 2mm) over a fabricated rotor-bearing test rig the characteristic curves are drawn and compared.
Receiver operating characteristic curves were constructed for FIT quantitative values and carcinoma and for FIT quantitative values and adenoma.

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