{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["26(9)"],"submitter":["Li B"],"pubmed_abstract":["<h4>Background</h4>Ultra-wide coverage CT (> 128 detector rows) makes it possible to image a heart or brain in a single rotation but are associated with large cone angles, which can severely degrade the image quality.<h4>Purpose</h4>This study evaluate the image quality and artifact levels of a dual-focal-spot single-detector (DFSSD) CT geometry designed to achieve 140 mm z-axis coverage, through a simulation study.<h4>Methods</h4>The DFSSD CT system employs two x-ray focal spots spaced 90 mm apart along the z-axis and a 100 mm CT detector. It provides 140 mm z-axis coverage at the iso-center. A research CT simulation package (CatSim) was employed throughout this study. To compare the image quality, three system geometries were simulated: (A) single focal spot with 40 mm detector (VCT40), "],"journal":["Journal of applied clinical medical physics"],"pagination":["e70220"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12401943"],"repository":["biostudies-literature"],"pubmed_title":["Dual-focal-spot single-detector CT: A simulation study to assess cone-beam artifacts and noise."],"pmcid":["PMC12401943"],"pubmed_authors":["Li B","Tang X"],"additional_accession":[]},"is_claimable":false,"name":"Dual-focal-spot single-detector CT: A simulation study to assess cone-beam artifacts and noise.","description":"<h4>Background</h4>Ultra-wide coverage CT (> 128 detector rows) makes it possible to image a heart or brain in a single rotation but are associated with large cone angles, which can severely degrade the image quality.<h4>Purpose</h4>This study evaluate the image quality and artifact levels of a dual-focal-spot single-detector (DFSSD) CT geometry designed to achieve 140 mm z-axis coverage, through a simulation study.<h4>Methods</h4>The DFSSD CT system employs two x-ray focal spots spaced 90 mm apart along the z-axis and a 100 mm CT detector. It provides 140 mm z-axis coverage at the iso-center. A research CT simulation package (CatSim) was employed throughout this study. To compare the image quality, three system geometries were simulated: (A) single focal spot with 40 mm detector (VCT40), ","dates":{"release":"2025-01-01T00:00:00Z","publication":"2025 Sep","modification":"2026-05-29T18:46:32.802Z","creation":"2026-04-08T05:43:50.52Z"},"accession":"S-EPMC12401943","cross_references":{"pubmed":["40890952"],"doi":["10.1002/acm2.70220"]}}