By Topic

A comparison of Gd/Tc versus Tc/Tl simultaneous transmission and emission imaging using both single and triple detector fan-beam SPECT systems

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

4 Author(s)
Welch, A. ; Dept. of Radiol., Utah Univ., Salt Lake City, UT, USA ; Gullberg, G.T. ; Christian, P.E. ; Datz, F.L.

In this study, the authors compare the accuracy of the transmission and emission maps, produced using both a Gd/Tc and a Tc/Tl transmission-emission source combination. In both cases, the transmission and emission data are acquired simultaneously. This results in contamination of the data acquired in the lower energy window by events from the higher energy isotope. The authors use standard methods to correct for this contamination when using a Gd/Tc combination and propose a new method for use with the Tc/Tl combination. The Tc/Tl combination yields more accurate transmission images than the Gd/Tc combination. However, when a single factor is used to scale the attenuation coefficients measured using the transmission source to those appropriate for the emission isotope/energy, the resulting error in the attenuation map used for attenuation correction is larger for the Tc/Tl combination than for the Gd/Tc combination. For this study, neither combination yielded emission maps which were significantly superior (in terms of reconstructed emission ratios) to the other.<>

Published in:

Nuclear Science, IEEE Transactions on  (Volume:41 ,  Issue: 6 )