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Radiology, Vol 153, 741-744, Copyright © 1984 by Radiological Society of North America

ARTICLES

Magnetic resonance imaging in the diagnosis of breast disease: use of transverse relaxation times

MB McSweeney, WC Small, V Cerny, W Sewell, RW Powell and JH Goldstein

The ability of magnetic resonance imaging (MR) to demonstrate breast carcinoma depends upon significantly different relaxation times in benign and malignant tissues. The authors conducted an in vitro study of transverse relaxation times (T2) of 393 breast tissue samples in order to establish a range of values for normal tissue, benign lesions, and carcinoma. All T2 values were multiexponential. Benign lesions were readily distinguished from both invasive and noninvasive carcinoma in samples containing fat or a mixture of fat and fibrous tissue; however, in purely fibrous samples there was some overlap of T2 values in benign and malignant tissues. Although the data acquisition and analysis requirements involved in this in vitro study exceed the capabilities of present whole-body MR imagers, the added understanding gained through efforts of this type may aid both interpretation of current images and future developments.


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