Scheduled System Maintenance on May 29th, 2015:
IEEE Xplore will be upgraded between 11:00 AM and 10:00 PM EDT. During this time there may be intermittent impact on performance. We apologize for any inconvenience.
By Topic

SPECT attenuation correction based on combined transmission-emission reconstruction of the attenuation map

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
$31 $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

1 Author(s)
Bronnikov, A.V. ; Bronnikov Algorithms, Arnhem, Netherlands

Attenuation correction is one of the most important issues in quantitative SPECT. A current trend in SPECT systems development is to employ transmission scanning for estimation of the attenuation map. An alternative approach is to use emission data for this purpose. Both approaches, however, are not free from drawbacks. Transmission data acquired on a SPECT system often suffer from incompleteness and truncation and may exhibit poor statistical properties, whereas determination of the attenuation map from emission projections may require redundant emission measurements and is sensitive to photon statistics. The key idea of the suggested approach is to combine transmission and emission data in order to extract more information from the measurements and therefore provide a better estimation of the attenuation map. The proposed algorithm is based on constrained optimization of the discrete consistency conditions for the emission data, where the transmission data play the role of linear equality constraints. Application to experimental torso phantom data is discussed.

Published in:

Nuclear Science Symposium Conference Record, 2004 IEEE  (Volume:6 )

Date of Conference:

16-22 Oct. 2004