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Burn area measurement by computerized planimetry.

A microcomputer system was developed which allows the user to draw the contour of a burn on a diagram on the computer screen. The per cent body surface area is then determined by direct area measurement by the computer. A total of 148 weekly burn diagrams ranging from 1% to 71% (mean, 23.7%) body surface area burn in 59 patients were analyzed using this system. Excellent correlation between the computer system and the manual Lund and Browder chart method (correlation coefficient, 0.962; p less than 0.0001) was obtained. Computerized planimetry provides a rapid, simple method of recording data and calculating total per cent burn which compares well with the manual Lund and Browder diagram.