Data processing and image reconstruction methods for the HEAD PENN-PET scanner

被引：9

作者：

Karp, JS ^{[1
]}

Becher, AJ

Matej, S

Kinahan, PE

机构：

[1] Univ Penn, Dept Radiol, Philadelphia, PA 19104 USA

[2] Univ Pittsburgh, Dept Radiol, Pittsburgh, PA 15213 USA

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1998年 / 45卷 / 03期

关键词：

D O I：

10.1109/23.681993

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Methods of reconstruction and quantitation are developed for a 3D system and are evaluated on the septa-less HEAD PENN-PET scanner, which has a very large axial acceptance angle (theta(max)=+/-28 degrees in the center) and large axial field-of-view of 256 mm. To overcome the difficulties of data storage and reconstruction time with 3D reconstruction, we have reduced the size of the 4-D projection matrix required for 3D-RP reconstruction, and compared the results to the Fourier rebinning (FORE) algorithm. Both approaches achieve a favorable tradeoff in data storage requirements, reconstruction time, and accuracy that are suitable for clinical use. We have also studied the application of the FORE algorithm to transmission scans acquired with a singles point source (Cs-137) so that data quantitation can be performed.

引用

页码：1144 / 1151

页数：8

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