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IMAGE IMPROVEMENTS IN POSITRON-EMISSION TOMOGRAPHY DUE TO MEASURING DIFFERENTIAL TIME-OF-FLIGHT AND USING MAXIMUM-LIKELIHOOD-ESTIMATION
被引:21
作者
:
POLITTE, DG
论文数:
0
引用数:
0
h-index:
0
机构:
Institute for Biomedical Computing, Biomedical Computer Laboratory, Washington University, St. Louis
POLITTE, DG
机构
:
[1]
Institute for Biomedical Computing, Biomedical Computer Laboratory, Washington University, St. Louis
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
:
10.1109/23.106707
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
:
Two distinctly different methods have been used to improve images produced in positron-emission tomography. The first method is to measure the differential time of flight of the photon pairs which are detected; the second is to use an iterative algorithm which computes maximum-likelihood estimates of radioactivity distributions. We have quantified the performance of algorithms which include neither, one or the other, or both methods of improvement by performing a repetitive simulation experiment using the Hoffman brain phantom as the underlying distribution of radioactivity. Our simulations show that all of the algorithms yield unbiased estimates of the desired image. The algorithm which computes maximum-likelihood estimates using time-of-flight information reconstructs images with the lowest variance. The algorithm which uses neither of these methods (filtered backprojection) reconstructs images with the highest variance. Copyright © 1990 by The Institute of Electrical and Electronics Engineers, Inc.
引用
收藏
页码:737 / 742
页数:6
相关论文
共 4 条
[1]
Shepp L A, 1982, IEEE Trans Med Imaging, V1, P113, DOI 10.1109/TMI.1982.4307558
[2]
A MATHEMATICAL-MODEL FOR POSITRON-EMISSION TOMOGRAPHY SYSTEMS HAVING TIME-OF-FLIGHT MEASUREMENTS
[J].
SNYDER, DL
论文数:
0
引用数:
0
h-index:
0
机构:
WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
SNYDER, DL
;
THOMAS, LJ
论文数:
0
引用数:
0
h-index:
0
机构:
WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
THOMAS, LJ
;
TERPOGOSSIAN, MM
论文数:
0
引用数:
0
h-index:
0
机构:
WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
TERPOGOSSIAN, MM
.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE,
1981,
28
(03)
:3575
-3583
[3]
NOISE AND EDGE ARTIFACTS IN MAXIMUM-LIKELIHOOD RECONSTRUCTIONS FOR EMISSION TOMOGRAPHY
[J].
SNYDER, DL
论文数:
0
引用数:
0
h-index:
0
SNYDER, DL
;
MILLER, MI
论文数:
0
引用数:
0
h-index:
0
MILLER, MI
;
THOMAS, LJ
论文数:
0
引用数:
0
h-index:
0
THOMAS, LJ
;
POLITTE, DG
论文数:
0
引用数:
0
h-index:
0
POLITTE, DG
.
IEEE TRANSACTIONS ON MEDICAL IMAGING,
1987,
6
(03)
:228
-238
[4]
IMAGE-RECONSTRUCTION FROM LIST-MODE DATA IN AN EMISSION TOMOGRAPHY SYSTEM HAVING TIME-OF-FLIGHT MEASUREMENTS
[J].
SNYDER, DL
论文数:
0
引用数:
0
h-index:
0
SNYDER, DL
;
POLITTE, DG
论文数:
0
引用数:
0
h-index:
0
POLITTE, DG
.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE,
1983,
30
(03)
:1843
-1849
←
1
→
共 4 条
[1]
Shepp L A, 1982, IEEE Trans Med Imaging, V1, P113, DOI 10.1109/TMI.1982.4307558
[2]
A MATHEMATICAL-MODEL FOR POSITRON-EMISSION TOMOGRAPHY SYSTEMS HAVING TIME-OF-FLIGHT MEASUREMENTS
[J].
SNYDER, DL
论文数:
0
引用数:
0
h-index:
0
机构:
WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
SNYDER, DL
;
THOMAS, LJ
论文数:
0
引用数:
0
h-index:
0
机构:
WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
THOMAS, LJ
;
TERPOGOSSIAN, MM
论文数:
0
引用数:
0
h-index:
0
机构:
WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
WASHINGTON UNIV,SCH MED,EDWARD MALLINCKRODT INST RADIOL,ST LOUIS,MO 63110
TERPOGOSSIAN, MM
.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE,
1981,
28
(03)
:3575
-3583
[3]
NOISE AND EDGE ARTIFACTS IN MAXIMUM-LIKELIHOOD RECONSTRUCTIONS FOR EMISSION TOMOGRAPHY
[J].
SNYDER, DL
论文数:
0
引用数:
0
h-index:
0
SNYDER, DL
;
MILLER, MI
论文数:
0
引用数:
0
h-index:
0
MILLER, MI
;
THOMAS, LJ
论文数:
0
引用数:
0
h-index:
0
THOMAS, LJ
;
POLITTE, DG
论文数:
0
引用数:
0
h-index:
0
POLITTE, DG
.
IEEE TRANSACTIONS ON MEDICAL IMAGING,
1987,
6
(03)
:228
-238
[4]
IMAGE-RECONSTRUCTION FROM LIST-MODE DATA IN AN EMISSION TOMOGRAPHY SYSTEM HAVING TIME-OF-FLIGHT MEASUREMENTS
[J].
SNYDER, DL
论文数:
0
引用数:
0
h-index:
0
SNYDER, DL
;
POLITTE, DG
论文数:
0
引用数:
0
h-index:
0
POLITTE, DG
.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE,
1983,
30
(03)
:1843
-1849
←
1
→