FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4387207194> ?p ?o ?g. }

• W4387207194 endingPage "e680" @default.
• W4387207194 startingPage "e680" @default.
• W4387207194 abstract "A recently developed advanced kVCBCT system, designed for simulation and planning, includes improvements to the imaging panel and reconstruction technique, enabling more accurate electron density mapping than a typical CBCT. This study investigates the accuracy, limitations, and dosimetric impact of this new system.CBCT images were taken of both large (pelvis) and small (head) electron density phantoms with inserts ranging from lung (0.29) to cortical bone (1.69). Images were taken with several pre-set protocols with energies of 125 kVp and 140 kVp. The effects of longitudinal buildup (for scatter due to the cone-beam geometry) and blade position were also investigated. The HU values of each insert were measured over a small region of interest. Several electron density curves were generated - pelvis protocol on the large phantom, head protocol on the small phantom, and average - and imported into a treatment planning system. Dose calculation was performed using each curve and differences were observed.HU to electron density mapping was sensitive to the use of longitudinal buildup and blade position, with differences in the curves observed at both low and high electron densities, due to imager saturation effects not found in typical clinical scenarios. Subsequent studies used both longitudinal buildup and fully opened blades. Under these conditions, mapping was not sensitive to technique or phantom size at low electron densities. At higher values, the curves diverged, with the head protocol showing higher HU values and the pelvis protocol showing lower. The average curve matched very closely with the curve from our standard CT simulator. Dose calculation showed little dependence on the curve chosen, with max point dose differences of 1.2% between the pelvis and average scans, though most of the plan was <0.5% different. Results for the head protocol were similar.The system provides reliable HU values comparable to a CT simulator, though it is important to consider the effects of imager saturation by choosing appropriate scatter and collimation. The calibration is slightly sensitive to the choice of phantom size and beam energy, though these differences led to negligible (<0.5%) differences in dose calculation accuracy." @default.
• W4387207194 created "2023-09-30" @default.
• W4387207194 creator A5020268043 @default.
• W4387207194 creator A5025660683 @default.
• W4387207194 creator A5039370403 @default.
• W4387207194 creator A5041015609 @default.
• W4387207194 creator A5042762870 @default.
• W4387207194 creator A5059524089 @default.
• W4387207194 creator A5070323665 @default.
• W4387207194 creator A5080570903 @default.
• W4387207194 date "2023-10-01" @default.
• W4387207194 modified "2023-10-17" @default.
• W4387207194 title "Accuracy of Electron Density Mapping of a Novel kVCBCT System Designed for Planning" @default.
• W4387207194 doi "https://doi.org/10.1016/j.ijrobp.2023.06.2140" @default.
• W4387207194 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37786003" @default.
• W4387207194 hasPublicationYear "2023" @default.
• W4387207194 type Work @default.
• W4387207194 citedByCount "0" @default.
• W4387207194 crossrefType "journal-article" @default.
• W4387207194 hasAuthorship W4387207194A5020268043 @default.
• W4387207194 hasAuthorship W4387207194A5025660683 @default.
• W4387207194 hasAuthorship W4387207194A5039370403 @default.
• W4387207194 hasAuthorship W4387207194A5041015609 @default.
• W4387207194 hasAuthorship W4387207194A5042762870 @default.
• W4387207194 hasAuthorship W4387207194A5059524089 @default.
• W4387207194 hasAuthorship W4387207194A5070323665 @default.
• W4387207194 hasAuthorship W4387207194A5080570903 @default.
• W4387207194 hasConcept C104293457 @default.
• W4387207194 hasConcept C120665830 @default.
• W4387207194 hasConcept C121332964 @default.
• W4387207194 hasConcept C125485243 @default.
• W4387207194 hasConcept C147120987 @default.
• W4387207194 hasConcept C185544564 @default.
• W4387207194 hasConcept C2989005 @default.
• W4387207194 hasConcept C30475298 @default.
• W4387207194 hasConcept C71924100 @default.
• W4387207194 hasConceptScore W4387207194C104293457 @default.
• W4387207194 hasConceptScore W4387207194C120665830 @default.
• W4387207194 hasConceptScore W4387207194C121332964 @default.
• W4387207194 hasConceptScore W4387207194C125485243 @default.
• W4387207194 hasConceptScore W4387207194C147120987 @default.
• W4387207194 hasConceptScore W4387207194C185544564 @default.
• W4387207194 hasConceptScore W4387207194C2989005 @default.
• W4387207194 hasConceptScore W4387207194C30475298 @default.
• W4387207194 hasConceptScore W4387207194C71924100 @default.
• W4387207194 hasIssue "2" @default.
• W4387207194 hasLocation W43872071941 @default.
• W4387207194 hasLocation W43872071942 @default.
• W4387207194 hasOpenAccess W4387207194 @default.
• W4387207194 hasPrimaryLocation W43872071941 @default.
• W4387207194 hasRelatedWork W1980883121 @default.
• W4387207194 hasRelatedWork W1991180196 @default.
• W4387207194 hasRelatedWork W2047350613 @default.
• W4387207194 hasRelatedWork W2079285557 @default.
• W4387207194 hasRelatedWork W2088376692 @default.
• W4387207194 hasRelatedWork W2160534932 @default.
• W4387207194 hasRelatedWork W3036272248 @default.
• W4387207194 hasRelatedWork W3094221632 @default.
• W4387207194 hasRelatedWork W4320030381 @default.
• W4387207194 hasRelatedWork W2050150012 @default.
• W4387207194 hasVolume "117" @default.
• W4387207194 isParatext "false" @default.
• W4387207194 isRetracted "false" @default.
• W4387207194 workType "article" @default.