| Recent
Advances in Medical Applications of Synchrotron Radiation Stanford Synchrotron Radiation Laboratory March 4-5, 2002 Program Director: Edward Rubenstein |
|
Diffraction
Enhanced Imaging: New Directions and Methods
Dean Chapman Illinois Institute of Technology |
| A number
of x-ray imaging methods have introduced new contrast mechanisms to
radiography in addition to absorption. The Diffraction Enhanced Imaging
(DEI) technique has two additional contrast mechanisms, refraction
gradie
nt and ultra-small-angle scatter rejection (extinction), that
have properties that are useful for soft tissue imaging as well as
the potential to greatly reduce x-ray exposure. Some recent results
of the application and analysis of DEI for breast cancer imaging and
cartilage/joint imaging will be presented. Also, new methods of image
analysis that extract more information will be presented. These new
methods indicate that th
e potential exists to reduce the dose while
still obtaining useful information. Finally, an update on efforts
to assess if DEI can be developed into a viable laboratory / clinical
system will be discussed. This work is supported by the National Institutes of Health grant R21 GM59395-01, the U. S. Army MRMC grant DAMD17-99-9217 (D.C.) and State of Illinois Higher Education Cooperative Agre ement. Presenter Contact Information: Prof. Dean Chapman Biological, Chemical and Physical Sciences Illinois Institute of Technology 3101 South Dearborn Chicago, IL 60616 phone: 312-567-3575 FAX: 312-567-3576 E-mail: dean.chapman@iit.edu |
