Estimation and control of the mean response of photomultiplier tubes

Persistent Link:
http://hdl.handle.net/10150/277087
Title:
Estimation and control of the mean response of photomultiplier tubes
Author:
Mar, Lori Strimbu, 1960-
Issue Date:
1989
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
A maximum-likelihood parameter-estimation method is developed that allows the mean of coarsely digitized data to be determined to far greater precision than that inherent in the digital quantization. The method is used to determine the mean responses of photomultiplier tubes in a medical scintillation camera. The mean responses as determined by the estimation scheme are applied to two tasks. The first is the development and construction of a feedback-control loop to stabilize photomultiplier tube responses. The second is a method to characterize the camera face for the construction of a look-up table of maximum a posteriori position estimates used in image acquisition. The implementation of the parameter-estimation algorithm, its applications in both the stabilization of photomultiplier tube response and image look-up table construction, and the analysis of photomultiplier tube statistics, are considered to be the major contributions of the work presented in this thesis. (Abstract shortened with permission of author.)
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Scintillation cameras.; Photoelectric multipliers.; Diagnostic imaging.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Electrical and Computer Engineering
Degree Grantor:
University of Arizona
Advisor:
Sundareshan, Malur K.; Barrett, Harrison H.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleEstimation and control of the mean response of photomultiplier tubesen_US
dc.creatorMar, Lori Strimbu, 1960-en_US
dc.contributor.authorMar, Lori Strimbu, 1960-en_US
dc.date.issued1989en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractA maximum-likelihood parameter-estimation method is developed that allows the mean of coarsely digitized data to be determined to far greater precision than that inherent in the digital quantization. The method is used to determine the mean responses of photomultiplier tubes in a medical scintillation camera. The mean responses as determined by the estimation scheme are applied to two tasks. The first is the development and construction of a feedback-control loop to stabilize photomultiplier tube responses. The second is a method to characterize the camera face for the construction of a look-up table of maximum a posteriori position estimates used in image acquisition. The implementation of the parameter-estimation algorithm, its applications in both the stabilization of photomultiplier tube response and image look-up table construction, and the analysis of photomultiplier tube statistics, are considered to be the major contributions of the work presented in this thesis. (Abstract shortened with permission of author.)en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectScintillation cameras.en_US
dc.subjectPhotoelectric multipliers.en_US
dc.subjectDiagnostic imaging.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineElectrical and Computer Engineeringen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorSundareshan, Malur K.en_US
dc.contributor.advisorBarrett, Harrison H.en_US
dc.identifier.proquest1337970en_US
dc.identifier.oclc23189289en_US
dc.identifier.bibrecord.b17590875en_US
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