{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/92806"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/92806","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Evaluation of room-temperature semiconductor detectors for ultrahigh resolution pet imaging","abstract":"The evaluation of a room-temperature semiconductor detector for ultrahigh resolution positron emission tomography (PET) imaging is presented. The approach is based on the use of a CdTe semiconductor detector. The detector is a 2mm thick cadmium telluride (CdTe) detector with a pixel pitch of 350μm x 350μm; it is bump bonded to an energy-resolved photo-counting (ERPC) readout applied-specific integrated circuit (ASIC). It can be demonstrated that this configuration yields depth-of-interaction (DOI) information. Two ways of extracting DOI information are presented. A prototype PET system based on this detector has been developed. The corresponding system calibration algorithm is presented for the PET system, which considers the DOI information. The validity of the two proposed methods of extracting DOI information has been studied by doing the following experiment. The measurements were made by using a Co-57 point source with an active spherical area of diameter 0.25mm. The beam entered the sensor at an angle of ~48.8 degrees to the surface; results showed that the beam passed through 5 pixels before exiting the bottom of the sensor. The validity of these two methods of extracting DOI information was further demonstrated by development of a related PET system calibration algorithm. Future work will address image reconstruction based on results from this PET system calibration algorithm.","abstract_html":"The evaluation of a room-temperature semiconductor detector for ultrahigh resolution positron emission tomography (PET) imaging is presented. The approach is based on the use of a CdTe semiconductor detector. The detector is a 2mm thick cadmium telluride (CdTe) detector with a pixel pitch of 350μm x 350μm; it is bump bonded to an energy-resolved photo-counting (ERPC) readout applied-specific integrated circuit (ASIC). It can be demonstrated that this configuration yields depth-of-interaction (DOI) information. Two ways of extracting DOI information are presented. A prototype PET system based on this detector has been developed. The corresponding system calibration algorithm is presented for the PET system, which considers the DOI information. The validity of the two proposed methods of extracting DOI information has been studied by doing the following experiment. The measurements were made by using a Co-57 point source with an active spherical area of diameter 0.25mm. The beam entered the sensor at an angle of ~48.8 degrees to the surface; results showed that the beam passed through 5 pixels before exiting the bottom of the sensor. The validity of these two methods of extracting DOI information was further demonstrated by development of a related PET system calibration algorithm. Future work will address image reconstruction based on results from this PET system calibration algorithm.","abstract_has_math":false,"creators":["Shen, Zengming"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Nuclear, Plasma, Radiolgc Engr","degree_department":null,"school":null,"contributors":["Meng, Ling Jian","Sullivan, Clair J."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2016,"date_issued":"2016-11-10T17:54:54Z","date_published":"2016-11-10T17:54:54Z","updated_at":"2026-07-22T22:26:35Z","subjects":["Depth-of-interaction (DOI)","CdTe semiconductor detector","Positron emission tomography (PET)","waveform analysis","system calibration"],"languages":["en"],"rights":["Copyright 2016 Zengming Shen"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/92806","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Meng, Ling Jian","Sullivan, Clair J."]},{"key":"dc:creator","label":"Author","values":["Shen, Zengming"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2016-11-10T17:54:54Z","2016-07-13","2016-08"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Nuclear, Plasma, Radiolgc Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Depth-of-interaction (DOI)","CdTe semiconductor detector","Positron emission tomography (PET)","waveform analysis","system calibration"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2016 Zengming Shen"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/92806"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The evaluation of a room-temperature semiconductor detector for ultrahigh resolution positron emission tomography (PET) imaging is presented. The approach is based on the use of a CdTe semiconductor detector. The detector is a 2mm thick cadmium telluride (CdTe) detector with a pixel pitch of 350μm x 350μm; it is bump bonded to an energy-resolved photo-counting (ERPC) readout applied-specific integrated circuit (ASIC). It can be demonstrated that this configuration yields depth-of-interaction (DOI) information. Two ways of extracting DOI information are presented. A prototype PET system based on this detector has been developed. The corresponding system calibration algorithm is presented for the PET system, which considers the DOI information. The validity of the two proposed methods of extracting DOI information has been studied by doing the following experiment. The measurements were made by using a Co-57 point source with an active spherical area of diameter 0.25mm. The beam entered the sensor at an angle of ~48.8 degrees to the surface; results showed that the beam passed through 5 pixels before exiting the bottom of the sensor. The validity of these two methods of extracting DOI information was further demonstrated by development of a related PET system calibration algorithm. Future work will address image reconstruction based on results from this PET system calibration algorithm.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-11-09 without embargo terms","The student, Zengming Shen, accepted the attached license on 2016-07-11 at 16:12.","The student, Zengming Shen, submitted this Thesis for approval on 2016-07-11 at 16:21.","This Thesis was approved for publication on 2016-07-13 at 09:33.","DSpace SAF Submission Ingestion Package generated from Vireo submission #9874 on 2016-11-09 at 10:24:05","Made available in DSpace on 2016-11-10T17:54:54Z (GMT). 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The detector is a 2mm thick cadmium telluride (CdTe) detector with a pixel pitch of 350μm x 350μm; it is bump bonded to an energy-resolved photo-counting (ERPC) readout applied-specific integrated circuit (ASIC). It can be demonstrated that this configuration yields depth-of-interaction (DOI) information. Two ways of extracting DOI information are presented. A prototype PET system based on this detector has been developed. The corresponding system calibration algorithm is presented for the PET system, which considers the DOI information. The validity of the two proposed methods of extracting DOI information has been studied by doing the following experiment. The measurements were made by using a Co-57 point source with an active spherical area of diameter 0.25mm. The beam entered the sensor at an angle of ~48.8 degrees to the surface; results showed that the beam passed through 5 pixels before exiting the bottom of the sensor. The validity of these two methods of extracting DOI information was further demonstrated by development of a related PET system calibration algorithm. Future work will address image reconstruction based on results from this PET system calibration algorithm.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-11-09 without embargo terms","The student, Zengming Shen, accepted the attached license on 2016-07-11 at 16:12.","The student, Zengming Shen, submitted this Thesis for approval on 2016-07-11 at 16:21.","This Thesis was approved for publication on 2016-07-13 at 09:33.","DSpace SAF Submission Ingestion Package generated from Vireo submission #9874 on 2016-11-09 at 10:24:05","Made available in DSpace on 2016-11-10T17:54:54Z (GMT). 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