Matches in SemOpenAlex for { <https://semopenalex.org/work/W2039147823> ?p ?o ?g. }
Showing items 1 to 80 of
80
with 100 items per page.
- W2039147823 endingPage "3770" @default.
- W2039147823 startingPage "3770" @default.
- W2039147823 abstract "Purpose: Positron emission tomography (PET) of lung tumors suffers due to breathing-motion induced blurring. Gated PET ameliorates motion blurring, but the concomitant reduction in coincidence-event statistics per gated image leads to increased image noise, decreasing the utility of the images. In this work we demonstrate a method of reducing motion-induced blurring from PET images without decreasing coincidence-event statistics. Methods: The method works by deforming and stacking gated PET images using lung tissue motion vectors derived from deformable image registration performed between the phases of respiratory-correlated computed tomography (4DCT) images. A duration of 12 minutes of respiratory-correlated FDG-PET data in list-mode format and two 4DCT scans were acquired from 3 patients with a total of 4 small (4–18cc) lung tumors. A motion-corrected image was produced using the first 2 minutes of list-mode data. The motion-corrected image was compared to a high-statistics gated end-exhale PET image created from the remaining 10 minutes of PET list-mode data, which was used as a gold-standard approximating a truly motion-free image. The images were also compared against an un-gated PET image produced using the first two minutes of list-mode data, to quantify the improvement provided by the motion-correction process. Results: Tumor SUVmax was on average 44% higher for motion-reduced images relative to un-gated images, but still on average 14% lower than the gold-standard high-statistics gated images. Volumes of tumors segmented at 40% of SUVmax were on average 32% lower relative to un-gated images, but still 22% higher than the high-statistics gated images. Conclusions: A process for reducing motion blurring in PET images without increasing image noise was demonstrated. The motion-corrected images are quantitatively and qualitatively improved relative to un-gated images, however further improvement is needed in order to match the quality of high-statistics gated images." @default.
- W2039147823 created "2016-06-24" @default.
- W2039147823 creator A5002507883 @default.
- W2039147823 creator A5003894390 @default.
- W2039147823 creator A5006750331 @default.
- W2039147823 creator A5040497044 @default.
- W2039147823 creator A5048679648 @default.
- W2039147823 creator A5058980347 @default.
- W2039147823 creator A5068409279 @default.
- W2039147823 creator A5083473334 @default.
- W2039147823 creator A5091674984 @default.
- W2039147823 date "2011-06-01" @default.
- W2039147823 modified "2023-09-26" @default.
- W2039147823 title "TU-E-BRC-04: High-Statistics Breathing Motion-Corrected Positron Emission Tomography by Deforming and Stacking Gated PET Images Using 4DCT-Derived Motion Vectors" @default.
- W2039147823 doi "https://doi.org/10.1118/1.3613191" @default.
- W2039147823 hasPublicationYear "2011" @default.
- W2039147823 type Work @default.
- W2039147823 sameAs 2039147823 @default.
- W2039147823 citedByCount "0" @default.
- W2039147823 crossrefType "journal-article" @default.
- W2039147823 hasAuthorship W2039147823A5002507883 @default.
- W2039147823 hasAuthorship W2039147823A5003894390 @default.
- W2039147823 hasAuthorship W2039147823A5006750331 @default.
- W2039147823 hasAuthorship W2039147823A5040497044 @default.
- W2039147823 hasAuthorship W2039147823A5048679648 @default.
- W2039147823 hasAuthorship W2039147823A5058980347 @default.
- W2039147823 hasAuthorship W2039147823A5068409279 @default.
- W2039147823 hasAuthorship W2039147823A5083473334 @default.
- W2039147823 hasAuthorship W2039147823A5091674984 @default.
- W2039147823 hasConcept C105702510 @default.
- W2039147823 hasConcept C121332964 @default.
- W2039147823 hasConcept C141379421 @default.
- W2039147823 hasConcept C142724271 @default.
- W2039147823 hasConcept C154945302 @default.
- W2039147823 hasConcept C204787440 @default.
- W2039147823 hasConcept C2775842073 @default.
- W2039147823 hasConcept C2779832538 @default.
- W2039147823 hasConcept C2989005 @default.
- W2039147823 hasConcept C31601959 @default.
- W2039147823 hasConcept C31972630 @default.
- W2039147823 hasConcept C33923547 @default.
- W2039147823 hasConcept C39300077 @default.
- W2039147823 hasConcept C41008148 @default.
- W2039147823 hasConcept C71924100 @default.
- W2039147823 hasConceptScore W2039147823C105702510 @default.
- W2039147823 hasConceptScore W2039147823C121332964 @default.
- W2039147823 hasConceptScore W2039147823C141379421 @default.
- W2039147823 hasConceptScore W2039147823C142724271 @default.
- W2039147823 hasConceptScore W2039147823C154945302 @default.
- W2039147823 hasConceptScore W2039147823C204787440 @default.
- W2039147823 hasConceptScore W2039147823C2775842073 @default.
- W2039147823 hasConceptScore W2039147823C2779832538 @default.
- W2039147823 hasConceptScore W2039147823C2989005 @default.
- W2039147823 hasConceptScore W2039147823C31601959 @default.
- W2039147823 hasConceptScore W2039147823C31972630 @default.
- W2039147823 hasConceptScore W2039147823C33923547 @default.
- W2039147823 hasConceptScore W2039147823C39300077 @default.
- W2039147823 hasConceptScore W2039147823C41008148 @default.
- W2039147823 hasConceptScore W2039147823C71924100 @default.
- W2039147823 hasIssue "6Part29" @default.
- W2039147823 hasLocation W20391478231 @default.
- W2039147823 hasOpenAccess W2039147823 @default.
- W2039147823 hasPrimaryLocation W20391478231 @default.
- W2039147823 hasRelatedWork W1935924235 @default.
- W2039147823 hasRelatedWork W2093747323 @default.
- W2039147823 hasRelatedWork W2517246325 @default.
- W2039147823 hasRelatedWork W2542516841 @default.
- W2039147823 hasRelatedWork W2914011423 @default.
- W2039147823 hasRelatedWork W3011087369 @default.
- W2039147823 hasRelatedWork W3109244347 @default.
- W2039147823 hasRelatedWork W4210454584 @default.
- W2039147823 hasRelatedWork W4298129483 @default.
- W2039147823 hasRelatedWork W4306661736 @default.
- W2039147823 hasVolume "38" @default.
- W2039147823 isParatext "false" @default.
- W2039147823 isRetracted "false" @default.
- W2039147823 magId "2039147823" @default.
- W2039147823 workType "article" @default.