{"doi":"10.1109/nssmic.1999.842791","title":"Absolute in vivo quantitation of myocardial activity","abstract":null,"journal":"1999 IEEE Nuclear Science Symposium. Conference Record. 1999 Nuclear Science Symposium and Medical Imaging Conference (Cat. No.99CH37019)","year":null,"id":618444,"datarank":0.10397207708399181,"base_score":0.6931471805599453,"endowment":0.6931471805599453,"self_citation_contribution":0.10397207708399181,"citation_network_contribution":0.0,"self_endowment_contribution":0.10397207708399181,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":1,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1595459,"name":"H.R. Tang","orcid":null,"position":1,"is_corresponding":false},{"id":1595460,"name":"K.H. Wong","orcid":null,"position":2,"is_corresponding":false},{"id":591374,"name":"M.C. Wu","orcid":null,"position":3,"is_corresponding":false},{"id":1595461,"name":"M.W. Dae","orcid":null,"position":4,"is_corresponding":false},{"id":1595463,"name":"B.H. Hasegawa","orcid":null,"position":5,"is_corresponding":false},{"id":1595458,"name":"A.J. Da Silva","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Absolute in vivo quantitation of myocardial activity","abstract":"Quantitation of myocardial SPECT images corrected for attenuation underestimates the true radionuclide content due to partial volume errors. To measure absolute radionuclide uptake, the authors have developed a technique to compensate these images for partial volume errors using coregistered X-ray CT images. The CT image is used to define a template that approximates the geometrical extent of the myocardium. Once defined, the template is assigned unit activity and is mathematically projected using a realistic physical model of the radionuclide imaging process. These projections are then reconstructed and used to compensate the SPECT image for partial volume errors. The method was tested in a porcine model of myocardial perfusion using Tc-99m sestamibi. The in vivo activity concentration in the porcine myocardium had an error in the range -40% to -60% with attenuation correction alone. By also correcting for partial volume errors, absolute quantitation with an accuracy error of 20% or better was achieved.","is_dataset_classified":null,"base_score":0.6931471805599453,"endowment":0.6931471805599453,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"19910364","pmcid":null,"openalex_id":"https://openalex.org/W4230733542","authors":[],"funders":[],"total_grants":0,"fwci":0.0,"citation_percentile":0.47472784,"influential_citations":0,"citation_trend":[],"oa_status":"closed","license":null,"oa_locations":[{"url":"https://doi.org/10.1109/nssmic.1999.842791","host_type":"conference"}],"fields_of_study":["Medical Imaging Techniques and Applications","Advanced X-ray and CT Imaging","Advanced MRI Techniques and Applications"],"mesh_terms":[],"keywords":["Partial volume","Correction for attenuation","Attenuation","Nuclear medicine","Volume (thermodynamics)","Perfusion","Biomedical engineering","Myocardial perfusion imaging","In vivo","Radionuclide","Perfusion scanning","Spect imaging","Mathematics","Materials science","Physics","Medicine","Optics","Radiology"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Zero hunger"}],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-03T04:26:10.324942Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}