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Breast-Specific Gamma Imaging (BSGI) Can Reduce the Number of Unnecessary Breast Biopsies When Compared to MRI
Date:3/18/2009

Pivotal Study Presented at Interdisciplinary Breast Center Conference

NEWPORT NEWS, Va., March 18 /PRNewswire/ -- Women that require additional diagnostic imaging after a questionable mammogram may be at risk for unnecessary biopsies when only magnetic resonance imaging (MRI) is offered, according to a new study presented at the 19th Annual National Interdisciplinary Breast Center Conference in Las Vegas.

"Our goal was to see if BSGI could be used to improve upon the specificity of MRI, and also reduce the number of biopsies. The study is important because with the addition of BSGI, we could eliminate the need for 50 percent of biopsies or possibly change a patient's decision to have more radical surgery," said Dr. Leora Lanzkowsky, Director of Women's Imaging, CHW - Nevada Imaging Centers in Las Vegas.

BSGI has comparable sensitivity but superior specificity when compared to MRI. Sensitivity refers to the ability of an imaging technique to detect the presence of disease. Specificity refers to the technique's ability to detect that disease is actually not present.

BSGI, a molecular breast imaging technique, is a follow-up to mammography that can see lesions independent of tissue density and discover early stage cancers. With BSGI, the patient receives a pharmaceutical tracing agent that is absorbed by all the cells in the body. Due to their increased rate of metabolic activity, cancerous cells in the breast absorb a greater amount of the tracing agent than normal, healthy cells and generally appear as "hot spots" on the BSGI image. The Dilon 6800 Gamma Camera is a high-resolution, compact gamma camera, optimized to perform BSGI. The camera provides a manageable four to 16 images versus up to thousands of images with breast MRI.

The Study

Over the course of 18 months, at three medical centers, BSGI and MRI were performed in women requiring addit
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SOURCE Dilon Technologies Inc.
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