Radiology, Vol 185, 599-603, Copyright © 1992 by Radiological Society of North America
Subperiosteal resorption: effect of full-frame image compression of hand radiographs on diagnostic accuracy
JW Sayre, BK Ho, MI Boechat, TR Hall and HK Huang
Department of Radiological Sciences, University of California, Los Angeles 90024-1721.
Image compression is essential to handle a large volume of digital images,
including computed tomographic, magnetic resonance, computed radiographic,
and digitized images in a digital radiology operation. Developed during the
past few years, full-frame bit allocation performed with the cosine
transform technique has been proved to be an excellent irreversible image
compression method. This article describes the effect, on the accuracy of
diagnosis of subperiosteal resorption, of using the hardware compression
module to produce hand radiographs. Receiver operating characteristic
analysis of the interpretation of 71 radiographs by five observers
demonstrated that there is no statistically significant difference in
diagnostic accuracy between the original radiographs and compressed and
reconstructed images obtained with a compression ratio as high as 20:1.
