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Effect of respiratory motion correction and CT-based attenuation correction on dual-gated cardiac PET image quality and quantification

Saraste Antti; Klén Riku; Teuho Jarmo; Teräs Mika; Siekkinen Reetta; Lehtonen Eero; Schultz Jussi; Jafari Tadi Mojtaba

dc.contributor.authorSaraste Antti
dc.contributor.authorKlén Riku
dc.contributor.authorTeuho Jarmo
dc.contributor.authorTeräs Mika
dc.contributor.authorSiekkinen Reetta
dc.contributor.authorLehtonen Eero
dc.contributor.authorSchultz Jussi
dc.contributor.authorJafari Tadi Mojtaba
dc.date.accessioned2022-10-28T13:08:28Z
dc.date.available2022-10-28T13:08:28Z
dc.identifier.urihttps://www.utupub.fi/handle/10024/163080
dc.description.abstract<p>Background.</p><p>Dual-gating reduces respiratory and cardiac motion effects but increases noise. With motion correction, motion is minimized and image quality preserved. We applied motion correction to create end-diastolic respiratory motion corrected images from dual-gated images.</p><p>Methods.</p><p>[F-18]-fluorodeoxyglucose ([F-18]-FDG) PET images of 13 subjects were reconstructed with 4 methods: non-gated, dual-gated, motion corrected, and motion corrected with 4D-CT (MoCo-4D). Image quality was evaluated using standardized uptake values, contrast ratio, signal-to-noise ratio, coefficient of variation, and contrast-to-noise ratio. Motion minimization was evaluated using myocardial wall thickness.</p><p>Results.</p><p>MoCo-4D showed improvement for contrast ratio (2.83 vs 2.76), signal-to-noise ratio (27.5 vs 20.3) and contrast-to-noise ratio (14.5 vs 11.1) compared to dual-gating. The uptake difference between MoCo-4D and non-gated images was non-significant (P > .05) for the myocardium (2.06 vs 2.15 g/mL), but significant (P < .05) for the blood pool (.80 vs .86 g/mL). Non-gated images had the lowest coefficient of variation (27.3%), with significant increase for all other methods (31.6-32.5%). MoCo-4D showed smallest myocardial wall thickness (16.6 mm) with significant decrease compared to non-gated images (20.9 mm).</p><p>Conclusions.</p><p>End-diastolic respiratory motion correction and 4D-CT resulted in improved motion minimization and image quality over standard dual-gating.</p>
dc.language.isoen
dc.publisherSpringer
dc.titleEffect of respiratory motion correction and CT-based attenuation correction on dual-gated cardiac PET image quality and quantification
dc.identifier.urlhttps://link.springer.com/article/10.1007/s12350-021-02769-6
dc.identifier.urnURN:NBN:fi-fe2021093048586
dc.contributor.organizationfi=biolääketieteen laitos, yhteiset|en=Institute of Biomedicine|
dc.contributor.organizationfi=terveysteknologia|en=Terveysteknologia|
dc.contributor.organizationfi=kliininen fysiologia ja isotooppilääketiede|en=Clinical Physiology and Nuclear Medicine|
dc.contributor.organizationfi=sisätautioppi|en=Internal Medicine|
dc.contributor.organizationfi=PET perustoiminta|en=PET Basic Operations|
dc.contributor.organizationfi=tyks, vsshp|en=tyks, vsshp|
dc.contributor.organization-code2607322
dc.contributor.organization-code2607100
dc.contributor.organization-code2609810
dc.contributor.organization-code2607318
dc.contributor.organization-code2610303
dc.converis.publication-id67224956
dc.converis.urlhttps://research.utu.fi/converis/portal/Publication/67224956
dc.identifier.eissn1532-6551
dc.identifier.jour-issn1071-3581
dc.okm.affiliatedauthorLehtonen, Eero
dc.okm.affiliatedauthorSaraste, Antti
dc.okm.affiliatedauthorJafari Tadi, Mojtaba
dc.okm.affiliatedauthorKlén, Riku
dc.okm.affiliatedauthorSchultz, Jussi
dc.okm.affiliatedauthorTeräs, Mika
dc.okm.affiliatedauthorSiekkinen, Reetta
dc.okm.affiliatedauthorDataimport, tyks, vsshp
dc.okm.affiliatedauthorTeuho, Jarmo
dc.okm.discipline3126 Surgery, anesthesiology, intensive care, radiologyen_GB
dc.okm.discipline3126 Kirurgia, anestesiologia, tehohoito, radiologiafi_FI
dc.okm.discipline3121 Internal medicineen_GB
dc.okm.discipline3121 Sisätauditfi_FI
dc.okm.internationalcopublicationnot an international co-publication
dc.okm.internationalityInternational publication
dc.okm.typeJournal article
dc.publisher.countryYhdysvallat (USA)fi_FI
dc.publisher.countryUnited Statesen_GB
dc.publisher.country-codeUS
dc.relation.doi10.1007/s12350-021-02769-6
dc.relation.ispartofjournalJournal of Nuclear Cardiology
dc.year.issued2021


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