1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference最新文献_第9页

Optimum Bandwidth Usage In Digital Coincidence Detection For PET PET数字符合检测中的最佳带宽使用

1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference Pub Date : 1993-10-31 DOI: 10.1109/NSSMIC.1993.701835

J. Young, M. Casey, D. Newport

引用次数: 9

Assessment Of Containment Fan Cooler Degradation By Motor Current Signature Analysis 基于电机电流特征分析的安全壳风扇冷却器退化评估

1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference Pub Date : 1993-10-31 DOI: 10.1109/NSSMIC.1993.701802

L. P. Gradin, N. Burstein

{"title":"Assessment Of Containment Fan Cooler Degradation By Motor Current Signature Analysis","authors":"L. P. Gradin, N. Burstein","doi":"10.1109/NSSMIC.1993.701802","DOIUrl":"https://doi.org/10.1109/NSSMIC.1993.701802","url":null,"abstract":"Nuclear plants develop a surveillance and maintenance program that relates to assuring the continuing adequacy of important plant equipment. This is especially true regarding nuclear safety-related equipment which is considered to be part of the \"Safety-Related structures, systems, or components that are relied upon to remain functional during and following design basis events to ensure the integrity of the reactor coolant pressure boundary, the capability to shut down the reactor and maintain it in a safe shutdown, and the capability to prevent or mitigate the consequences of accidents that could result in potential offsite exposure comparable to lOCFR part 100 guidelines\" consistent with 10CFR50.65(1). In addition electrical nuclear safety related equipment which may be subject to a harsh environment must be maintained in a state of readiness to perform during the harsh environmental conditions of the nuclear accident. A cost- effective surveillance and maintenance program should assure that equipment adequacy to perform or remain operable is retained. This paper describes the criteria used for selection of a Non-Intrusive Condition Evaluation (NICE) system by Motor Current Signature Analysis (MCSA) to assess selected conditions of relatively inaccessible incontainment motors during normal operation. It also describes the successful results from use of such a system.","PeriodicalId":287813,"journal":{"name":"1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116272361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assuring Adequacy Of Motor Repairs For Nuclear Power Plants 保证核电站电机维修的充分性

1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference Pub Date : 1993-10-31 DOI: 10.1109/NSSMIC.1993.701777

L. P. Gradin, P. Jaskolowski

引用次数: 1

Some Properties Of Gas Microstrip Detectors Made On Tedlar Substrates And Operating With CF/sub 4//Isobutane Gas 用CF/sub //异丁烷气体工作的碲基气体微带探测器的一些特性

1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference Pub Date : 1993-10-31 DOI: 10.1109/NSSMIC.1993.701698

M. Salomon, J. Armitage, M. Dixit, W. Faszer, D. Lam, G. Oakha

引用次数: 11

Medical Image Compression Using JPEG Progressive Coding 使用JPEG渐进式编码的医学图像压缩

1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference Pub Date : 1993-10-31 DOI: 10.1109/NSSMIC.1993.701857

C. Ahn, I. Kim, S. Han

引用次数: 7

Solid state tritium detector for biomedical applications 用于生物医学的固态氚探测器

1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference Pub Date : 1993-10-31 DOI: 10.1109/NSSMIC.1993.373545

J. Gordon, R. Farrell, K. Daley, C. Oakes

引用次数: 5

Performance Of A Set Of Large Volume Threshold Cherenkov Detectors 一组大体积阈值切伦科夫检测器的性能

1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference Pub Date : 1993-10-31 DOI: 10.1109/NSSMIC.1993.701659

D. Kawall, Z. Meziani, R. Gearhart, E. Hughes, M. Spengos

引用次数: 0

A fast projector backprojector pair for use in iterative reconstruction of SPECT images 一种用于SPECT图像迭代重建的快速投影反投影对

1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference Pub Date : 1993-10-31 DOI: 10.1109/NSSMIC.1993.373555

S. Glick, B. C. Penney, C. Byrne

{"title":"A fast projector backprojector pair for use in iterative reconstruction of SPECT images","authors":"S. Glick, B. C. Penney, C. Byrne","doi":"10.1109/NSSMIC.1993.373555","DOIUrl":"https://doi.org/10.1109/NSSMIC.1993.373555","url":null,"abstract":"Reconstructed SPECT images suffer from decreased image quality due to photon attenuation within the patient and distance-dependent blurring introduced by the collimated gamma camera. Several iterative reconstruction algorithms have been proposed to compensate for these degradations, as well as to suppress noise. These methods require the use of a realistic projector and back-projector pair which can accurately model the physics of photon transport. Here, the authors describe a projector/backprojector pair which accurately models both photon attenuation and the distance-dependent detector response, and provides a substantial decrease in computational complexity over previous methods. The computational savings are obtained by using the frequency distance principle (FDP) to incorporate distance-dependent blurring into the projector/back-projector pair. Since this procedure can be implemented using FFT methods, distance-dependent blurring can be modeled with a substantial reduction in the number of computations required. Simulation studies using a paint source object and the Hoffman bit-map brain phantom have shown that use of the FDP based projector-backprojector pair can reduce the computation time required for iterative reconstruction, with minimal loss of accuracy.<<ETX>>","PeriodicalId":287813,"journal":{"name":"1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123574126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Fully automatic processing of in vivo proton spectra and spectroscopic images 全自动处理体内质子光谱和光谱图像

1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference Pub Date : 1993-10-31 DOI: 10.1109/NSSMIC.1993.373544

Zhe Wu, A. Maudsley, M. Weiner

引用次数: 1

Characterization Of New A-Si:H Detectors Fabricated From Amorphous Silicon Deposited At High Rate By Helium Enhanced PECVD 非晶硅高速率氦强化PECVD制备新型A-Si:H探测器的表征

1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference Pub Date : 1993-10-31 DOI: 10.1109/NSSMIC.1993.701702

T. Pochet, A. Ilie, F. Foulon, B. Equer

引用次数: 16