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AJR 2000; 174:1241-1244
© American Roentgen Ray Society

Computers in Radiology

A Simple Method for Obtaining Original Data from Published Graphs and Plots

Chris L. Sistrom1 and Patricia J. Mergo

1 Both authors: Department of Radiology, University of Florida College of Medicine, P. O. Box 100374, Gainesville, FL 32610-0374.

OBJECTIVE. To describe a method for deriving original data values from scanned images of graphs and scatterplots published in the medical literature.

CONCLUSION. The procedure is simple, reproducible, and relatively error free (when performed carefully). This method is useful in converting published graphic material into numeric data for various uses when the original data are unavailable directly from the authors.


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