Speaker
Prof.
Harris Kagan
(Dept. of Physics, Ohio State University)
Description
The Compton principle of electronic collimation overcomes the resolution-efficiency
tradeoff imposed by mechanical collimators, and therefore Compton-based imagers may
exhibit both high resolution and high efficiency. We have simulated and developed
both Compton SPECT and Compton PET imaging prototypes.
Simulations predict better than 3mm spatial resolution and about 10^-3 efficiency
for a system consisting of an endorectal prostate probe with scintillator above and
below a patient. A clinical prototype to validate the simulation results has been
constructed. 1mm thick silicon pad sensors and associated readout electronics with
energy resolution close to 1 keV FWHM have been developed. A resolution of 3.0mm FWHM
at 3cm from the scatter detector was obtained with a Barium point source. A test
bench was also developed to demonstrate the potential of solid state detectors for
very high resolution small animal PET. A spatial resolution of 700 microns FWHM and a
uniform response over a wide field of view was obtained. The time resolution of the
solid-state detector as well as further improvements of the spatial resolution using
a strong magnetic fields will also be presented.
Author
Prof.
Harris Kagan
(Dept. of Physics, Ohio State University)
Co-authors
Dr
A. Studen
(Jozef Stefan Institute, University of Ljlubljana)
Dr
C. Lacasta
(IFIC/CSIC-UVEG, Valencia)
Mr
D. Burdette
(Ohio State University)
Dr
E. Chesi
(Ohio State University, CERN)
Dr
G. Llosa
(IFIC/CSIC-UVEG, Valencia)
Prof.
K. Honscheid
(Ohio State University)
Prof.
M. Mikuz
(Jozef Stefan Institute, University of Ljlubljana)
Dr
N. Clinthorne
(Division of Nuclear Medicine, University of Michigan)
Dr
P. Weilhammer
(INFN Perugia, CERN)
Dr
S.J. Park
(Medical Dept. BNL)
Mr
S.S. Huh
(Dept. of Biomedical Engfineering, Univ. of Michigan)
Prof.
W.L. Rogers
(University of Michigan)
