ACCELERATED IMAGE-RECONSTRUCTION FOR A CYLINDRICAL POSITRON TOMOGRAPH USING FOURIER DOMAIN METHODS

被引：17

作者：

STEARNS, CW ^{[1
]}

CHESLER, DA ^{[1
]}

BROWNELL, GL ^{[1
]}

机构：

[1] MASSACHUSETTS GEN HOSP,PHYS RES LAB,BOSTON,MA 02114

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1990年 / 37卷 / 02期

基金：

美国国家卫生研究院;

关键词：

D O I：

10.1109/23.106713

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：

We present a method to reconstruct projection images through assembly in the Fourier domain, rather than by backprojection. By bypassing the rate-limiting backprojection step of filtered backprojection, the new algorithm operates more quickly than previous methods. Fourier domain operations are also used to form forward-projected views of the imaged object; portions of these views are required to operate a full three-dimensional reconstruction using the “cross-plane” projection planes. These Fourier domain algorithms will form the basis for the reconstruction algorithm in PCR-II, a volumetric positron imager currently under construction at MGH. Copyright © 1990 by The Institute of Electrical and Electronics Engineers, Inc.

引用

页码：773 / 777

页数：5

共 6 条

[1] CYLINDRICAL PET DETECTOR DESIGN [J].