Accession Number : ADA332463

Title :   Development of High-Resolution Pet Mammogram Modules

Descriptive Note : Annual rept. 1 Jul 96-30 Jun 97

Corporate Author : BOSTON UNIV MA

Personal Author(s) : Worstell, William

PDF Url : ADA332463

Report Date : AUG 1997

Pagination or Media Count : 32

Abstract : Because of the limitations of standard X-ray mammography for the early detection of breast cancer, in particular for women with radiographically dense breasts, nuclear medicine imaging techniques are of interest tbr this application. Of these techniques, Positron-Emission Tomography has the greatest potential for high sensitivity to small tumors, and good uptake ratios have been demonstrated for breast tumors with the standard PET radiotracer FDG. The key PET detector attributes for this application are high acceptance and good efficiency at high rates, fine spatial resolution, and good scatter rejection. We are constructing and testing novel prototype PET detector module which have demonstrated high spatial resolution (2.5 mm FWHM in all three dimensions when reconstructing a point source), with large acceptance and a unique active edge and active corner geometry which will be compatible with standard breast imaging procedures including the imaging of axillary nodes. We plan to continue to optimize and test larger-scale, higher efficiency, higher speed and higher resolution modules within the coming year.

Descriptors :   *BREAST CANCER, *MAMMOGRAPHY, DETECTION, NEOPLASMS, X RAYS, WOMEN, MAMMARY GLANDS.

Subject Categories : Medicine and Medical Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE