By Topic

Improvement of Compton imaging efficiency by using side-neighbor events

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)

The Compton-imaging efficiency has been improved for 3D position sensitive room-temperature CdZn Te gamma-ray detectors by properly calibrating and classifying charge-sharing events. Interactions that are collected by multiple side-by-side neighboring pixels are found to have unique time-amplitude walk behavior that had previously resulted in improper depth reconstruction. After properly reconstructing the depth of interaction, these charge-sharing events can be treated as a single interaction and included in the Compton imaging reconstruction algorithms. Events shared by neighboring pixels are classified as charge-sharing based on their separation in depth and the energy collected by each pixel. By including these charge-sharing events in the imaging reconstruction, the imaging efficiency is improved by 33% and 140% for 662 keV and 1333 keV incident photons, respectively. A simulation further shows that over 80% of the side-neighbor three-pixel events at 662 keV are classified as charge sharing and 80% of these classified events reconstruct a correct image.

Published in:

IEEE Nuclear Science Symposuim & Medical Imaging Conference

Date of Conference:

Oct. 30 2010-Nov. 6 2010