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| 1. |
Hard-Soft Problems |
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Journal of the American Statistical Association,
Volume 80,
Issue 389,
1985,
Page 1-7
I.Richard Savage,
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ISSN:0162-1459
DOI:10.1080/01621459.1985.10477118
出版商:Taylor & Francis Group
年代:1985
数据来源: Taylor
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| 2. |
A Statistical Model for Positron Emission Tomography |
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Journal of the American Statistical Association,
Volume 80,
Issue 389,
1985,
Page 8-20
Y. Vardi,
L.A. Shepp,
L. Kaufman,
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摘要:
Positron emission tomography (PET)—still in its research stages—is a technique that promises to open new medical frontiers by enabling physicians to study the metabolic activity of the body in a pictorial manner. Much as in X-ray transmission tomography and other modes of computerized tomography, the quality of the reconstructed image in PET is very sensitive to the mathematical algorithm to be used for reconstruction. In this article, we tailor a mathematical model to the physics of positron emissions, and we use the model to describe the basic image reconstruction problem of PET as a standard problem in statistical estimation from incomplete data. We describe various estimation procedures, such as the maximum likelihood (ML) method (using the EM algorithm), the method of moments, and the least squares method. A computer simulation of a PET experiment is then used to demonstrate the ML and the least squares reconstructions. The main purposes of this article are to report on what we believe is an important contribution of statistics to PET and to familiarize statisticians with this exciting field that can benefit from further statistical methodologies to be developed with PET problems in mind. Thus no background in physics or previous knowledge of computerized tomography is assumed. The emphasis is on the basic PET model and the statistical methodology needed for it.
ISSN:0162-1459
DOI:10.1080/01621459.1985.10477119
出版商:Taylor & Francis Group
年代:1985
数据来源: Taylor
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| 3. |
Comment: The EM Parametric Image Reconstruction Algorithm |
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Journal of the American Statistical Association,
Volume 80,
Issue 389,
1985,
Page 20-22
RichardE. Carson,
Kenneth Lange,
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ISSN:0162-1459
DOI:10.1080/01621459.1985.10477120
出版商:Taylor & Francis Group
年代:1985
数据来源: Taylor
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| 4. |
Comment |
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Journal of the American Statistical Association,
Volume 80,
Issue 389,
1985,
Page 22-25
GaborT. Herman,
Yair Censor,
Yair Censor,
RobertM. Lewitt,
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PDF (343KB)
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ISSN:0162-1459
DOI:10.1080/01621459.1985.10477121
出版商:Taylor & Francis Group
年代:1985
数据来源: Taylor
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| 5. |
Comment: Practical Considerations |
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Journal of the American Statistical Association,
Volume 80,
Issue 389,
1985,
Page 26-28
K.J. Kearfott,
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ISSN:0162-1459
DOI:10.1080/01621459.1985.10477122
出版商:Taylor & Francis Group
年代:1985
数据来源: Taylor
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| 6. |
Comment |
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Journal of the American Statistical Association,
Volume 80,
Issue 389,
1985,
Page 29-30
NanM. Laird,
EdwardF. Maher,
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ISSN:0162-1459
DOI:10.1080/01621459.1985.10477123
出版商:Taylor & Francis Group
年代:1985
数据来源: Taylor
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| 7. |
Comment: EM for PET |
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Journal of the American Statistical Association,
Volume 80,
Issue 389,
1985,
Page 31-32
DonaldB. Rubin,
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PDF (217KB)
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ISSN:0162-1459
DOI:10.1080/01621459.1985.10477124
出版商:Taylor & Francis Group
年代:1985
数据来源: Taylor
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| 8. |
Comment |
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Journal of the American Statistical Association,
Volume 80,
Issue 389,
1985,
Page 33-33
H.T. Thaler,
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PDF (110KB)
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ISSN:0162-1459
DOI:10.1080/01621459.1985.10477125
出版商:Taylor & Francis Group
年代:1985
数据来源: Taylor
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| 9. |
Rejoinder |
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Journal of the American Statistical Association,
Volume 80,
Issue 389,
1985,
Page 34-37
Y. Vardi,
L.A. Shepp,
L.A. Shepp,
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ISSN:0162-1459
DOI:10.1080/01621459.1985.10477126
出版商:Taylor & Francis Group
年代:1985
数据来源: Taylor
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| 10. |
The Measurement of Early Retirement |
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Journal of the American Statistical Association,
Volume 80,
Issue 389,
1985,
Page 38-45
Bert Kestenbaum,
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PDF (811KB)
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摘要:
The Social Security Administration's Continuous Work History Sample is used to show a strong trend towards more frequent early retirement among men. Moreover, the effects of including retirements due to incapacitation with other retirements and of includingpartialretirements withfullretirements are quantified. The extent of retirement has previously been measured by the application ofresidual methodsto aggregated census bureau data on population and labor force. The assumptions underlying that technique are examined critically, and issue is taken with a published study that purported to demonstrate with residual methods that the age at retirement of men is not changing.
ISSN:0162-1459
DOI:10.1080/01621459.1985.10477127
出版商:Taylor & Francis Group
年代:1985
数据来源: Taylor
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Volume 80 issue 389