Akademik

1. A recording of clinical data relating to a patient's case. 2. SYN: curve (2). 3. In optics, symbols of graduated size for measuring visual acuity, or test types for determining far or near vision. See Snellen test types. [L. charta, sheet of papyrus]

- Amsler c. a 10-cm square divided into 5-mm squares upon which an individual may project a defect in the central visual field. SYN: Amsler grid.

- isometric c. a c. or graph that displays three dimensions on a plane surface.

- Levey-Jennings c. SYN: quality control c..

- Pickles c. day-by-day plots of new cases of infectious disease used to demonstrate the progress of an epidemic in a small, relatively isolated population.

- quality control c. a c. illustrating the allowable limits of error in laboratory test performance, the limits being a defined deviation from the mean of a control serum, most commonly ±2 SD. SEE ALSO: quality control. SYN: Levey-Jennings c..

- Tanner growth c. a series of charts showing distribution of parameters of physical development, such as stature, growth curves, and skinfold thickness, for children by sex, age, and stages of puberty.

- Walker c. a system of plotting the relative fetal and placental sizes.

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chart 'chärt n

1) a sheet giving information esp. in tabular form esp a record of medical information for a patient

2) GRAPH

3) a sheet of paper ruled and graduated for use in a recording instrument

chart vt

continuous hyperfractionated accelerated radiotherapy: a recently developed radiotherapy technique aimed at the rapid destruction of tumour cells when they are actively proliferating and therefore most sensitive to radiation. The technique continues to be evaluated at research level: it has been shown to be of benefit in the treatment of lung cancer and may also be useful for locally advanced head and neck cancer.