FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1999020399> ?p ?o ?g. }

• W1999020399 endingPage "S701" @default.
• W1999020399 startingPage "S700" @default.
• W1999020399 abstract "Purpose/Objective(s)For image-guided radiotherapy (IGRT) the different vendors of linear accelerators offer new kV imaging tools. These systems include - besides a radiographic and fluoroscopic mode–CT functionality. The aim of this study was to evaluate the future potential of such a cone beam CT option for therapy planning purposes allowing dynamic adaptation for target volume changes.Materials/MethodsThe Varian On-Board Imager (OBI) Cone Beam CT (CBCT) option consists of a kV-source and kV-Imager mounted on robotic arms perpendicular to the MV therapy beam. In a single 360° rotation a volumetric CT data set can be acquired with a 26.6 or 48 cm field-of-view. In order to calibrate the system with regard to HU a special phantom has been designed to include the whole imager area. Removable inserts allow the measurement of central axis doses. A planning study has been carried out to determine the usability of CBCT data and compare these with diagnostic CT data.ResultsComparisons of data between a diagnostic CT scanner and the 3D-calibrated Cone Beam CT with regard to image quality and hounsfield units representation for an humanoid phantom (RSD Alderson) indicate good accordance. Central axis doses applied during the acquisition of one volumetric data set are between 1 and 3 cGy depending on the geometry. Results with real patient data show excellent image quality. Relative dose distributions in CBCT-based plans show minor differences to plans calculated using a diagnostic CT image dataset (p = 0.002) and absolute dosage deviations are within 1% (p = 0.001).ConclusionsThis work illustrates that a properly calibrated Cone Beam CT option allows off-line treatment planning. Furthermore the image quality is sufficient for contouring of target outlines. CBCT can serve as control CT in order to adapt the target volume and resize the treatment fields and/or optimize the treatment plan. Purpose/Objective(s)For image-guided radiotherapy (IGRT) the different vendors of linear accelerators offer new kV imaging tools. These systems include - besides a radiographic and fluoroscopic mode–CT functionality. The aim of this study was to evaluate the future potential of such a cone beam CT option for therapy planning purposes allowing dynamic adaptation for target volume changes. For image-guided radiotherapy (IGRT) the different vendors of linear accelerators offer new kV imaging tools. These systems include - besides a radiographic and fluoroscopic mode–CT functionality. The aim of this study was to evaluate the future potential of such a cone beam CT option for therapy planning purposes allowing dynamic adaptation for target volume changes. Materials/MethodsThe Varian On-Board Imager (OBI) Cone Beam CT (CBCT) option consists of a kV-source and kV-Imager mounted on robotic arms perpendicular to the MV therapy beam. In a single 360° rotation a volumetric CT data set can be acquired with a 26.6 or 48 cm field-of-view. In order to calibrate the system with regard to HU a special phantom has been designed to include the whole imager area. Removable inserts allow the measurement of central axis doses. A planning study has been carried out to determine the usability of CBCT data and compare these with diagnostic CT data. The Varian On-Board Imager (OBI) Cone Beam CT (CBCT) option consists of a kV-source and kV-Imager mounted on robotic arms perpendicular to the MV therapy beam. In a single 360° rotation a volumetric CT data set can be acquired with a 26.6 or 48 cm field-of-view. In order to calibrate the system with regard to HU a special phantom has been designed to include the whole imager area. Removable inserts allow the measurement of central axis doses. A planning study has been carried out to determine the usability of CBCT data and compare these with diagnostic CT data. ResultsComparisons of data between a diagnostic CT scanner and the 3D-calibrated Cone Beam CT with regard to image quality and hounsfield units representation for an humanoid phantom (RSD Alderson) indicate good accordance. Central axis doses applied during the acquisition of one volumetric data set are between 1 and 3 cGy depending on the geometry. Results with real patient data show excellent image quality. Relative dose distributions in CBCT-based plans show minor differences to plans calculated using a diagnostic CT image dataset (p = 0.002) and absolute dosage deviations are within 1% (p = 0.001). Comparisons of data between a diagnostic CT scanner and the 3D-calibrated Cone Beam CT with regard to image quality and hounsfield units representation for an humanoid phantom (RSD Alderson) indicate good accordance. Central axis doses applied during the acquisition of one volumetric data set are between 1 and 3 cGy depending on the geometry. Results with real patient data show excellent image quality. Relative dose distributions in CBCT-based plans show minor differences to plans calculated using a diagnostic CT image dataset (p = 0.002) and absolute dosage deviations are within 1% (p = 0.001). ConclusionsThis work illustrates that a properly calibrated Cone Beam CT option allows off-line treatment planning. Furthermore the image quality is sufficient for contouring of target outlines. CBCT can serve as control CT in order to adapt the target volume and resize the treatment fields and/or optimize the treatment plan. This work illustrates that a properly calibrated Cone Beam CT option allows off-line treatment planning. Furthermore the image quality is sufficient for contouring of target outlines. CBCT can serve as control CT in order to adapt the target volume and resize the treatment fields and/or optimize the treatment plan." @default.
• W1999020399 created "2016-06-24" @default.
• W1999020399 creator A5002070811 @default.
• W1999020399 creator A5010596464 @default.
• W1999020399 creator A5085764680 @default.
• W1999020399 date "2007-11-01" @default.
• W1999020399 modified "2023-09-27" @default.
• W1999020399 title "Linac Cone-Beam CT Option for Treatment Planning: A Possible Approach for DART (Dynamic Adaptive Radiotherapy)?" @default.
• W1999020399 doi "https://doi.org/10.1016/j.ijrobp.2007.07.2077" @default.
• W1999020399 hasPublicationYear "2007" @default.
• W1999020399 type Work @default.
• W1999020399 sameAs 1999020399 @default.
• W1999020399 citedByCount "0" @default.
• W1999020399 crossrefType "journal-article" @default.
• W1999020399 hasAuthorship W1999020399A5002070811 @default.
• W1999020399 hasAuthorship W1999020399A5010596464 @default.
• W1999020399 hasAuthorship W1999020399A5085764680 @default.
• W1999020399 hasBestOaLocation W19990203991 @default.
• W1999020399 hasConcept C104293457 @default.
• W1999020399 hasConcept C115961682 @default.
• W1999020399 hasConcept C120665830 @default.
• W1999020399 hasConcept C121332964 @default.
• W1999020399 hasConcept C126838900 @default.
• W1999020399 hasConcept C154945302 @default.
• W1999020399 hasConcept C168834538 @default.
• W1999020399 hasConcept C180048950 @default.
• W1999020399 hasConcept C187954543 @default.
• W1999020399 hasConcept C19527891 @default.
• W1999020399 hasConcept C201645570 @default.
• W1999020399 hasConcept C2779751349 @default.
• W1999020399 hasConcept C2779813781 @default.
• W1999020399 hasConcept C2989005 @default.
• W1999020399 hasConcept C3018399558 @default.
• W1999020399 hasConcept C31972630 @default.
• W1999020399 hasConcept C41008148 @default.
• W1999020399 hasConcept C509974204 @default.
• W1999020399 hasConcept C544519230 @default.
• W1999020399 hasConcept C55020928 @default.
• W1999020399 hasConcept C58489278 @default.
• W1999020399 hasConcept C71924100 @default.
• W1999020399 hasConcept C9267231 @default.
• W1999020399 hasConceptScore W1999020399C104293457 @default.
• W1999020399 hasConceptScore W1999020399C115961682 @default.
• W1999020399 hasConceptScore W1999020399C120665830 @default.
• W1999020399 hasConceptScore W1999020399C121332964 @default.
• W1999020399 hasConceptScore W1999020399C126838900 @default.
• W1999020399 hasConceptScore W1999020399C154945302 @default.
• W1999020399 hasConceptScore W1999020399C168834538 @default.
• W1999020399 hasConceptScore W1999020399C180048950 @default.
• W1999020399 hasConceptScore W1999020399C187954543 @default.
• W1999020399 hasConceptScore W1999020399C19527891 @default.
• W1999020399 hasConceptScore W1999020399C201645570 @default.
• W1999020399 hasConceptScore W1999020399C2779751349 @default.
• W1999020399 hasConceptScore W1999020399C2779813781 @default.
• W1999020399 hasConceptScore W1999020399C2989005 @default.
• W1999020399 hasConceptScore W1999020399C3018399558 @default.
• W1999020399 hasConceptScore W1999020399C31972630 @default.
• W1999020399 hasConceptScore W1999020399C41008148 @default.
• W1999020399 hasConceptScore W1999020399C509974204 @default.
• W1999020399 hasConceptScore W1999020399C544519230 @default.
• W1999020399 hasConceptScore W1999020399C55020928 @default.
• W1999020399 hasConceptScore W1999020399C58489278 @default.
• W1999020399 hasConceptScore W1999020399C71924100 @default.
• W1999020399 hasConceptScore W1999020399C9267231 @default.
• W1999020399 hasIssue "3" @default.
• W1999020399 hasLocation W19990203991 @default.
• W1999020399 hasOpenAccess W1999020399 @default.
• W1999020399 hasPrimaryLocation W19990203991 @default.
• W1999020399 hasRelatedWork W1642012722 @default.
• W1999020399 hasRelatedWork W1966766210 @default.
• W1999020399 hasRelatedWork W1967093597 @default.
• W1999020399 hasRelatedWork W1982789351 @default.
• W1999020399 hasRelatedWork W2049394478 @default.
• W1999020399 hasRelatedWork W2075565253 @default.
• W1999020399 hasRelatedWork W2151127213 @default.
• W1999020399 hasRelatedWork W2152251929 @default.
• W1999020399 hasRelatedWork W2417594604 @default.
• W1999020399 hasRelatedWork W3028984494 @default.
• W1999020399 hasVolume "69" @default.
• W1999020399 isParatext "false" @default.
• W1999020399 isRetracted "false" @default.
• W1999020399 magId "1999020399" @default.
• W1999020399 workType "article" @default.