{"title":"从SPECT投影中约束IntraSPECT重建","authors":"S. Manglos, T. M. Young","doi":"10.1109/NSSMIC.1993.373561","DOIUrl":null,"url":null,"abstract":"A new method is presented for tomographic image reconstruction, called \"Intrinsic Transmission SPECT\" or just \"IntraSPECT\". It simultaneously reconstructs both the attenuation map (/spl mu/) and an attenuation-compensated activity map (A), using only the SPECT projections. A modified ART-algorithm (ART-IntraSPECT) was developed and tested with a simulated thorax. The /spl mu/-image reconstructed with ART-IntraSPECT clearly exhibited all relevant anatomical structure, such as lungs and spine vs soft tissue. However, both A and /spl mu/-images were quantitatively inaccurate. The accuracy was considerably improved by applying reasonable tissue-type constraints to the /spl mu/-image.<<ETX>>","PeriodicalId":287813,"journal":{"name":"1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1993-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"33","resultStr":"{\"title\":\"Constrained IntraSPECT reconstruction from SPECT projections\",\"authors\":\"S. Manglos, T. M. Young\",\"doi\":\"10.1109/NSSMIC.1993.373561\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A new method is presented for tomographic image reconstruction, called \\\"Intrinsic Transmission SPECT\\\" or just \\\"IntraSPECT\\\". It simultaneously reconstructs both the attenuation map (/spl mu/) and an attenuation-compensated activity map (A), using only the SPECT projections. A modified ART-algorithm (ART-IntraSPECT) was developed and tested with a simulated thorax. The /spl mu/-image reconstructed with ART-IntraSPECT clearly exhibited all relevant anatomical structure, such as lungs and spine vs soft tissue. However, both A and /spl mu/-images were quantitatively inaccurate. The accuracy was considerably improved by applying reasonable tissue-type constraints to the /spl mu/-image.<<ETX>>\",\"PeriodicalId\":287813,\"journal\":{\"name\":\"1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference\",\"volume\":\"25 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1993-10-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"33\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/NSSMIC.1993.373561\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"1993 IEEE Conference Record Nuclear Science Symposium and Medical Imaging Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NSSMIC.1993.373561","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Constrained IntraSPECT reconstruction from SPECT projections
A new method is presented for tomographic image reconstruction, called "Intrinsic Transmission SPECT" or just "IntraSPECT". It simultaneously reconstructs both the attenuation map (/spl mu/) and an attenuation-compensated activity map (A), using only the SPECT projections. A modified ART-algorithm (ART-IntraSPECT) was developed and tested with a simulated thorax. The /spl mu/-image reconstructed with ART-IntraSPECT clearly exhibited all relevant anatomical structure, such as lungs and spine vs soft tissue. However, both A and /spl mu/-images were quantitatively inaccurate. The accuracy was considerably improved by applying reasonable tissue-type constraints to the /spl mu/-image.<>
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