{"id":"https://openalex.org/W2073471168","doi":"https://doi.org/10.1109/icip.2011.6116549","title":"Effects of piecewise smoothing on cardiac SPECT reconstruction","display_name":"Effects of piecewise smoothing on cardiac SPECT reconstruction","publication_year":2011,"publication_date":"2011-09-01","ids":{"openalex":"https://openalex.org/W2073471168","doi":"https://doi.org/10.1109/icip.2011.6116549","mag":"2073471168"},"language":"en","primary_location":{"id":"doi:10.1109/icip.2011.6116549","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icip.2011.6116549","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 18th IEEE International Conference on Image Processing","raw_type":"proceedings-article"},"type":"conference-paper","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5102326460","display_name":"Wenyuan Qi","orcid":null},"institutions":[{"id":"https://openalex.org/I180949307","display_name":"Illinois Institute of Technology","ror":"https://ror.org/037t3ry66","country_code":"US","type":"education","lineage":["https://openalex.org/I180949307"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Wenyuan Qi","raw_affiliation_strings":["Department of Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, IL, USA","[Department of Electrical and Computer Engineering Illinois Institute of Technology, Chicago, IL 60616 USA.]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, IL, USA","institution_ids":["https://openalex.org/I180949307"]},{"raw_affiliation_string":"[Department of Electrical and Computer Engineering Illinois Institute of Technology, Chicago, IL 60616 USA.]","institution_ids":["https://openalex.org/I180949307"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082714133","display_name":"Xiaofeng Niu","orcid":"https://orcid.org/0000-0001-7338-3784"},"institutions":[{"id":"https://openalex.org/I180949307","display_name":"Illinois Institute of Technology","ror":"https://ror.org/037t3ry66","country_code":"US","type":"education","lineage":["https://openalex.org/I180949307"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Xiaofeng Niu","raw_affiliation_strings":["Department of Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, IL, USA","[Department of Electrical and Computer Engineering Illinois Institute of Technology, Chicago, IL 60616 USA.]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, IL, USA","institution_ids":["https://openalex.org/I180949307"]},{"raw_affiliation_string":"[Department of Electrical and Computer Engineering Illinois Institute of Technology, Chicago, IL 60616 USA.]","institution_ids":["https://openalex.org/I180949307"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5048510347","display_name":"Yongyi Yang","orcid":"https://orcid.org/0000-0003-3564-3260"},"institutions":[{"id":"https://openalex.org/I180949307","display_name":"Illinois Institute of Technology","ror":"https://ror.org/037t3ry66","country_code":"US","type":"education","lineage":["https://openalex.org/I180949307"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Yongyi Yang","raw_affiliation_strings":["Department of Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, IL, USA","[Department of Electrical and Computer Engineering Illinois Institute of Technology, Chicago, IL 60616 USA.]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, IL, USA","institution_ids":["https://openalex.org/I180949307"]},{"raw_affiliation_string":"[Department of Electrical and Computer Engineering Illinois Institute of Technology, Chicago, IL 60616 USA.]","institution_ids":["https://openalex.org/I180949307"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I180949307"],"apc_list":null,"apc_paid":null,"fwci":0.7152,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.6523835,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"3","issue":null,"first_page":"457","last_page":"460"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10522","display_name":"Medical Imaging Techniques and Applications","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10522","display_name":"Medical Imaging Techniques and Applications","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10378","display_name":"Advanced MRI Techniques and Applications","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T12386","display_name":"Advanced X-ray and CT Imaging","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/smoothing","display_name":"Smoothing","score":0.7302295565605164},{"id":"https://openalex.org/keywords/regularization","display_name":"Regularization (linguistics)","score":0.7137331366539001},{"id":"https://openalex.org/keywords/piecewise","display_name":"Piecewise","score":0.7009215950965881},{"id":"https://openalex.org/keywords/single-photon-emission-computed-tomography","display_name":"Single-photon emission computed tomography","score":0.6114785075187683},{"id":"https://openalex.org/keywords/classification-of-discontinuities","display_name":"Classification of discontinuities","score":0.5450600981712341},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.49730899930000305},{"id":"https://openalex.org/keywords/inverse-problem","display_name":"Inverse problem","score":0.49143731594085693},{"id":"https://openalex.org/keywords/iterative-reconstruction","display_name":"Iterative reconstruction","score":0.48066747188568115},{"id":"https://openalex.org/keywords/spect-imaging","display_name":"Spect imaging","score":0.4596625566482544},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.41510581970214844},{"id":"https://openalex.org/keywords/quadratic-equation","display_name":"Quadratic equation","score":0.4129030108451843},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.40540117025375366},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3639075756072998},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.2753203511238098},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.26690030097961426},{"id":"https://openalex.org/keywords/nuclear-medicine","display_name":"Nuclear medicine","score":0.26408547163009644},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.07936853170394897}],"concepts":[{"id":"https://openalex.org/C3770464","wikidata":"https://www.wikidata.org/wiki/Q775963","display_name":"Smoothing","level":2,"score":0.7302295565605164},{"id":"https://openalex.org/C2776135515","wikidata":"https://www.wikidata.org/wiki/Q17143721","display_name":"Regularization (linguistics)","level":2,"score":0.7137331366539001},{"id":"https://openalex.org/C164660894","wikidata":"https://www.wikidata.org/wiki/Q2037833","display_name":"Piecewise","level":2,"score":0.7009215950965881},{"id":"https://openalex.org/C2780441642","wikidata":"https://www.wikidata.org/wiki/Q849737","display_name":"Single-photon emission computed tomography","level":2,"score":0.6114785075187683},{"id":"https://openalex.org/C15627037","wikidata":"https://www.wikidata.org/wiki/Q541961","display_name":"Classification of discontinuities","level":2,"score":0.5450600981712341},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.49730899930000305},{"id":"https://openalex.org/C135252773","wikidata":"https://www.wikidata.org/wiki/Q1567213","display_name":"Inverse problem","level":2,"score":0.49143731594085693},{"id":"https://openalex.org/C141379421","wikidata":"https://www.wikidata.org/wiki/Q6094427","display_name":"Iterative reconstruction","level":2,"score":0.48066747188568115},{"id":"https://openalex.org/C2984398910","wikidata":"https://www.wikidata.org/wiki/Q849737","display_name":"Spect imaging","level":2,"score":0.4596625566482544},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.41510581970214844},{"id":"https://openalex.org/C129844170","wikidata":"https://www.wikidata.org/wiki/Q41299","display_name":"Quadratic equation","level":2,"score":0.4129030108451843},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.40540117025375366},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3639075756072998},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.2753203511238098},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.26690030097961426},{"id":"https://openalex.org/C2989005","wikidata":"https://www.wikidata.org/wiki/Q214963","display_name":"Nuclear medicine","level":1,"score":0.26408547163009644},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.07936853170394897},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icip.2011.6116549","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icip.2011.6116549","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 18th IEEE International Conference on Image Processing","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W1972150100","https://openalex.org/W1991649760","https://openalex.org/W2004893507","https://openalex.org/W2007526391","https://openalex.org/W2021594562","https://openalex.org/W2060189352","https://openalex.org/W2061979078","https://openalex.org/W2103559027","https://openalex.org/W2128456478","https://openalex.org/W2135294617","https://openalex.org/W2152465269","https://openalex.org/W2161366386","https://openalex.org/W3012235299","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W2953303953","https://openalex.org/W2533906294","https://openalex.org/W2067323155","https://openalex.org/W2023288059","https://openalex.org/W171655601","https://openalex.org/W2113768228","https://openalex.org/W2225942053","https://openalex.org/W1970980137","https://openalex.org/W1762867498","https://openalex.org/W2015773722"],"abstract_inverted_index":{"In":[0,84],"this":[1],"work":[2],"we":[3,88],"investigate":[4],"the":[5,13,49,69],"use":[6,109],"of":[7,15,31,72,110,118],"total":[8],"variation":[9],"(TV)":[10],"regularization":[11,42,107,112],"in":[12,48,52,75],"context":[14],"single":[16],"photon":[17],"emission":[18],"computed":[19],"tomography":[20],"(SPECT),":[21],"which":[22,78],"is":[23,43,57,79],"currently":[24],"widely":[25],"used":[26],"for":[27,67],"detection":[28,121],"and":[29],"evaluation":[30,86],"coronary":[32],"artery":[33],"diseases.":[34],"Owing":[35],"to":[36,45,58,115],"its":[37],"piecewise":[38],"smoothing":[39],"property,":[40],"TV":[41,111],"known":[44],"preserve":[46],"discontinuities":[47],"resulting":[50],"images":[51],"inverse":[53],"problems.":[54],"Our":[55,98],"goal":[56],"study":[59,87],"whether":[60],"such":[61],"a":[62,104],"property":[63],"will":[64],"be":[65],"useful":[66],"improving":[68],"reconstruction":[70],"accuracy":[71,117],"perfusion":[73],"defects":[74,125],"cardiac":[76,90],"SPECT,":[77],"an":[80],"important":[81],"clinical":[82],"task.":[83],"our":[85],"simulated":[89],"gated":[91],"SPECT":[92],"imaging":[93],"with":[94,103],"Tc-99m":[95],"labeled":[96],"sestamibi.":[97],"results":[99],"demonstrate":[100],"that,":[101],"compared":[102],"traditional":[105],"quadratic":[106],"approach,":[108],"could":[113],"lead":[114],"improved":[116],"perfect":[119],"defect":[120],"even":[122],"when":[123],"perfection":[124],"are":[126],"subtle.":[127]},"counts_by_year":[{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}