Matches in SemOpenAlex for { <https://semopenalex.org/work/W72352434> ?p ?o ?g. }
Showing items 1 to 97 of
97
with 100 items per page.
- W72352434 abstract "Hard, dynamic or virtual wedges are often used in conformal radiation therapy to reduce dose inhomogeneity within the target volume. There are restrictions exist in using such field modifiers for large fields due to technical peculiarities of the treatment machine. Field-in-field (FIF) manual segmentation, where one or more subfields are used to achieve dose homogeneity, could solve this problem, but such technique needs to be evaluated and verified first. FIF technique is based on intensity modulated radiation therapy (IMRT) principle, except that the intensity modulation is done manually using direct planning. The aim of this article is to determine whether the gamma criterion evaluation principle is suitable for FIF plans verification. For this study a 17 x 12 cm rectangular 6MV photon beam was used. Rectangular fields, sized 5 x 12, 6 x 8,5 and 3 x 4,3 cm were added as segments for each 17 x 12 cm base field in center. Dose distribution was calculated using treatment-planning system (TPS) to be used as a starting point to make distorted plans with segments displaced in superior, inferior, lateral left and lateral right directions to simulate patient movement or positioning errors during irradiation. Dose distributions for the distorted plans were measured using pixel ionization chambers detector array. The resulting dose distributions were compared to the reference one provided by TPS using gamma criterion. For acceptance criteria ∆DM=3% dose-difference and ∆dM=3 mm distanceto- agreement (DTA) were used and 95% of all pixels should be within this criterion. For some plans, considered in the present paper, 95% threshold was not exceeded even when the displacement reached clinically significant values of 1 cm and even more. Thus, one have to conclude that use of gamma criterion with 95% threshold of number of pixels in agreement is not suitable for FIF plans." @default.
- W72352434 created "2016-06-24" @default.
- W72352434 creator A5059599812 @default.
- W72352434 creator A5085735374 @default.
- W72352434 date "2013-01-01" @default.
- W72352434 modified "2023-09-26" @default.
- W72352434 title "On Usability of Gamma Criteria Distribution for Evaluation of Field-in-Field Treatment Plans in Conformal Radiotherapy" @default.
- W72352434 cites W1967121735 @default.
- W72352434 cites W2078556495 @default.
- W72352434 cites W2161389759 @default.
- W72352434 doi "https://doi.org/10.1007/978-3-642-34197-7_32" @default.
- W72352434 hasPublicationYear "2013" @default.
- W72352434 type Work @default.
- W72352434 sameAs 72352434 @default.
- W72352434 citedByCount "0" @default.
- W72352434 crossrefType "book-chapter" @default.
- W72352434 hasAuthorship W72352434A5059599812 @default.
- W72352434 hasAuthorship W72352434A5085735374 @default.
- W72352434 hasConcept C105795698 @default.
- W72352434 hasConcept C107457646 @default.
- W72352434 hasConcept C120665830 @default.
- W72352434 hasConcept C121332964 @default.
- W72352434 hasConcept C126322002 @default.
- W72352434 hasConcept C134306372 @default.
- W72352434 hasConcept C142259097 @default.
- W72352434 hasConcept C145148216 @default.
- W72352434 hasConcept C151770136 @default.
- W72352434 hasConcept C154945302 @default.
- W72352434 hasConcept C160633673 @default.
- W72352434 hasConcept C170130773 @default.
- W72352434 hasConcept C198291218 @default.
- W72352434 hasConcept C201645570 @default.
- W72352434 hasConcept C202444582 @default.
- W72352434 hasConcept C2989005 @default.
- W72352434 hasConcept C33923547 @default.
- W72352434 hasConcept C41008148 @default.
- W72352434 hasConcept C48925448 @default.
- W72352434 hasConcept C509974204 @default.
- W72352434 hasConcept C62520636 @default.
- W72352434 hasConcept C71924100 @default.
- W72352434 hasConcept C89631360 @default.
- W72352434 hasConcept C9652623 @default.
- W72352434 hasConcept C96834759 @default.
- W72352434 hasConcept C98214594 @default.
- W72352434 hasConceptScore W72352434C105795698 @default.
- W72352434 hasConceptScore W72352434C107457646 @default.
- W72352434 hasConceptScore W72352434C120665830 @default.
- W72352434 hasConceptScore W72352434C121332964 @default.
- W72352434 hasConceptScore W72352434C126322002 @default.
- W72352434 hasConceptScore W72352434C134306372 @default.
- W72352434 hasConceptScore W72352434C142259097 @default.
- W72352434 hasConceptScore W72352434C145148216 @default.
- W72352434 hasConceptScore W72352434C151770136 @default.
- W72352434 hasConceptScore W72352434C154945302 @default.
- W72352434 hasConceptScore W72352434C160633673 @default.
- W72352434 hasConceptScore W72352434C170130773 @default.
- W72352434 hasConceptScore W72352434C198291218 @default.
- W72352434 hasConceptScore W72352434C201645570 @default.
- W72352434 hasConceptScore W72352434C202444582 @default.
- W72352434 hasConceptScore W72352434C2989005 @default.
- W72352434 hasConceptScore W72352434C33923547 @default.
- W72352434 hasConceptScore W72352434C41008148 @default.
- W72352434 hasConceptScore W72352434C48925448 @default.
- W72352434 hasConceptScore W72352434C509974204 @default.
- W72352434 hasConceptScore W72352434C62520636 @default.
- W72352434 hasConceptScore W72352434C71924100 @default.
- W72352434 hasConceptScore W72352434C89631360 @default.
- W72352434 hasConceptScore W72352434C9652623 @default.
- W72352434 hasConceptScore W72352434C96834759 @default.
- W72352434 hasConceptScore W72352434C98214594 @default.
- W72352434 hasLocation W723524341 @default.
- W72352434 hasOpenAccess W72352434 @default.
- W72352434 hasPrimaryLocation W723524341 @default.
- W72352434 hasRelatedWork W105224540 @default.
- W72352434 hasRelatedWork W1963982119 @default.
- W72352434 hasRelatedWork W2004836495 @default.
- W72352434 hasRelatedWork W2008882211 @default.
- W72352434 hasRelatedWork W2010934771 @default.
- W72352434 hasRelatedWork W2033675024 @default.
- W72352434 hasRelatedWork W2033900559 @default.
- W72352434 hasRelatedWork W2036292658 @default.
- W72352434 hasRelatedWork W2042002632 @default.
- W72352434 hasRelatedWork W2053749653 @default.
- W72352434 hasRelatedWork W2056482932 @default.
- W72352434 hasRelatedWork W2070479475 @default.
- W72352434 hasRelatedWork W2079715730 @default.
- W72352434 hasRelatedWork W2084483237 @default.
- W72352434 hasRelatedWork W2372828349 @default.
- W72352434 hasRelatedWork W2382450123 @default.
- W72352434 hasRelatedWork W2888400162 @default.
- W72352434 hasRelatedWork W76212105 @default.
- W72352434 hasRelatedWork W909755627 @default.
- W72352434 hasRelatedWork W2282004738 @default.
- W72352434 isParatext "false" @default.
- W72352434 isRetracted "false" @default.
- W72352434 magId "72352434" @default.
- W72352434 workType "book-chapter" @default.