Accession Number : ADA332566

Title :   Exploration of Monoenergetic X-Ray Mammography with Syncrotron Radiation

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

Corporate Author : NORTH CAROLINA UNIV AT CHAPEL HILL

Personal Author(s) : Johnston, Richard E.

PDF Url : ADA332566

Report Date : JUL 1997

Pagination or Media Count : 47

Abstract : The purpose of this research is to explore the potential advantages of monoenergetic x-rays in medical imaging especially mammography. We are using synchrotron radiation as our source of x-rays to provide monoenergetic beams from 16 ke V upward. We are also developing Monte Carlo techniques to calculate contrast images. To date we have demonstrated an increase in contrast in phantoms and tissue samples over that obtained with conventional x-ray machines. We are developing a Monte Carlo based 2D image model with better documentation of the scatter that can display the image from which image contrast can be calculated. We have also initiated exploration of refraction imaging and diffraction enhancement imaging that can be obtained by "analyzing" the emerging beam from target phantoms. This imaging technique promises to offer a new concept in medical imaging that could improve contrast more than an order of magnitude.

Descriptors :   *X RAYS, *BREAST CANCER, *MAMMOGRAPHY, TISSUES(BIOLOGY), MONTE CARLO METHOD, SYNCHROTRON RADIATION.

Subject Categories : Medicine and Medical Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE