By Topic

NEMA NU2-2001 guided performance evaluation of four Siemens ECAT PET scanners

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

6 Author(s)
H. Herzog ; Inst. of Medicine, Forschungszentrum Juelich, Germany ; L. Tellmann ; C. Hocke ; U. Pietrzyk
more authors

The NEMA NU 2-2001 protocol has been especially designed for the performance evaluation of whole-body positron emission tomography (PET) measurements with scanners acquiring data in three-dimensional (3-D) mode without septa or with septa retracted. We report on the comparative NEMA NU 2-2001 performance tests on four different Siemens/CTI ECAT PET scanners, the two bismuth germanate oxide scanners HR+ and EXACT and the two lutetium oxyorthosilicate scanners ACCEL and EMERGE. All scanners were operated in 3-D mode only. Until now, no complete NEMA NU 2-2001 evaluations have been reported for the HR+ and EXACT. For the ACCEL and the EMERGE, these are the first published performance characteristics as far as we know. The HR+ showed a superior spatial resolution, whereas the ACCEL had the best countrate [noise equivalent count (NEC)] performance above a radioactivity concentration of 2 kBq/cc. The sensitivity of the full-ring scanners did not differ much with numbers between 5982 and 7180 cps/MBq. The sensitivity of the partial-ring scanner EMERGE was 2279 cps/MBq. Although the EMERGE yields lower NEC rates than the EXACT for radioactivity concentrations less than 10 kBq/cc, it is favorable beyond this cross over point. The scatter fraction of all four scanners was about 48%. The lesions to be examined by the image quality test could be seen best with the ACCEL. The NEMA NU 2-2001 performance tests proved to be a valuable guideline for this instrumental comparison.

Published in:

IEEE Transactions on Nuclear Science  (Volume:51 ,  Issue: 5 )