Analysis of echoencephalograms

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Abstract
SUMMARYThe interpretations of 100 radiographically proved echoencephalograms by a group of readers with a wide spectrum of experience with echoencephalography were analyzed. The results suggest that when the examination is interpreted in the absence of any clinical clues and in accordance with relatively rigidly applied criteria, the process of interpretation assumes some degree of objectivity in that there is a high degree of interreader consistency. When these criteria are not precisely met, the more inexperienced reader will tend to call a study indeterminate rather than to offer an opinion as to the position of the midline structures. As experience with echoencephalography increases, the reader is more inclined to view the series of photographs taken as a composite and to give an opinion on certain additional studies. The overall accuracy for predictions actually made, however, appears to be quite constant under these circumstances, and in this study ranged from 93 to 95%. Our data further suggest that the accuracy of the results of midline echoencephalographic determinations by experienced, well-trained, and supervised technicians is not significantly different from that obtained when the entire examination is performed by a physician.

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