Matches in SemOpenAlex for { <https://semopenalex.org/work/W2589061175> ?p ?o ?g. }
Showing items 1 to 82 of
82
with 100 items per page.
- W2589061175 endingPage "178" @default.
- W2589061175 startingPage "175" @default.
- W2589061175 abstract "Objective To study setup errors in precise radiotherapy by Varian ix accelerator OBI system and provide reference data for clinic.Methods 15 patients with pelvic cancer patients were studied in intensity modulated radiation therapy, measurement in patients with left and right (X), head and feet (Y),before and after the (Z) 3 directions respectivelY,the linear error and X,Y,Z axis to form the corresponding U, V, W rotation errors, online error correction anyway, and record the error values. The error data was analyzed before and after corrections using the two-parameter method to calculate the clinical target volume (CTV) to planning target volume (PTV) of putting boundaries (MPTV).Results 15 patients were preformed total 146 times of the first place after a and after treatment of conical CT scan,in the X,Y,Z direction system error ((x)) ± random error (s) were (1.23±0.134) mm,(2.02±7.96) mm and (1.87±3.13) mm,after treatment for respectively (0.49±1.14) mm,(0.98±2.28) mm and (1.87±3.13) mm.There was no significant difference on X direction of the tapered bed CT scan in the first place,before and after calibration,in Y and Z direction there were significant differences, corrected position error in Y and Z direction is lower compared with that of primary (P ＜ 0.05); the setup error were (0.72±1.23)°,(0.06±1.12)°,(0.12±0.97)° on U,V and W direction respectively. rotate error in general was not more than 3°. Since online correction only worked to the translation error correction, There was no difference in U,V and W before and after correction.The MPTV was 2.55,9.61 and 5.93 mm on X,Y,Z direction before correcting. Conclusions Online or offline using the OBI system to guide positioning error correction can improve the positioning accuracy and reduce the positioning uncertainty,while maintaining or increasing local control rate at the same time,reducing exposure to surrounding normal tissue,so as to improve treatment accuracy purposes.Key words: Pelvic neoplasms; On board imager; Radiotherapy,intensity-modulated" @default.
- W2589061175 created "2017-02-24" @default.
- W2589061175 creator A5035612207 @default.
- W2589061175 creator A5035900543 @default.
- W2589061175 creator A5042170464 @default.
- W2589061175 date "2012-03-28" @default.
- W2589061175 modified "2023-09-24" @default.
- W2589061175 title "OBI clinical studies of setup errors in precise radiotherapy of pelvic carcinoma" @default.
- W2589061175 doi "https://doi.org/10.3760/cma.j.issn.1006-9801.2012.03.009" @default.
- W2589061175 hasPublicationYear "2012" @default.
- W2589061175 type Work @default.
- W2589061175 sameAs 2589061175 @default.
- W2589061175 citedByCount "0" @default.
- W2589061175 crossrefType "journal-article" @default.
- W2589061175 hasAuthorship W2589061175A5035612207 @default.
- W2589061175 hasAuthorship W2589061175A5035900543 @default.
- W2589061175 hasAuthorship W2589061175A5042170464 @default.
- W2589061175 hasConcept C100253034 @default.
- W2589061175 hasConcept C10138342 @default.
- W2589061175 hasConcept C105795698 @default.
- W2589061175 hasConcept C121332964 @default.
- W2589061175 hasConcept C141071460 @default.
- W2589061175 hasConcept C162324750 @default.
- W2589061175 hasConcept C165838908 @default.
- W2589061175 hasConcept C173064807 @default.
- W2589061175 hasConcept C19619285 @default.
- W2589061175 hasConcept C198082294 @default.
- W2589061175 hasConcept C28826006 @default.
- W2589061175 hasConcept C2989005 @default.
- W2589061175 hasConcept C3018824978 @default.
- W2589061175 hasConcept C33923547 @default.
- W2589061175 hasConcept C509974204 @default.
- W2589061175 hasConcept C71924100 @default.
- W2589061175 hasConcept C73782692 @default.
- W2589061175 hasConceptScore W2589061175C100253034 @default.
- W2589061175 hasConceptScore W2589061175C10138342 @default.
- W2589061175 hasConceptScore W2589061175C105795698 @default.
- W2589061175 hasConceptScore W2589061175C121332964 @default.
- W2589061175 hasConceptScore W2589061175C141071460 @default.
- W2589061175 hasConceptScore W2589061175C162324750 @default.
- W2589061175 hasConceptScore W2589061175C165838908 @default.
- W2589061175 hasConceptScore W2589061175C173064807 @default.
- W2589061175 hasConceptScore W2589061175C19619285 @default.
- W2589061175 hasConceptScore W2589061175C198082294 @default.
- W2589061175 hasConceptScore W2589061175C28826006 @default.
- W2589061175 hasConceptScore W2589061175C2989005 @default.
- W2589061175 hasConceptScore W2589061175C3018824978 @default.
- W2589061175 hasConceptScore W2589061175C33923547 @default.
- W2589061175 hasConceptScore W2589061175C509974204 @default.
- W2589061175 hasConceptScore W2589061175C71924100 @default.
- W2589061175 hasConceptScore W2589061175C73782692 @default.
- W2589061175 hasIssue "03" @default.
- W2589061175 hasLocation W25890611751 @default.
- W2589061175 hasOpenAccess W2589061175 @default.
- W2589061175 hasPrimaryLocation W25890611751 @default.
- W2589061175 hasRelatedWork W2091941778 @default.
- W2589061175 hasRelatedWork W2109815891 @default.
- W2589061175 hasRelatedWork W2349616594 @default.
- W2589061175 hasRelatedWork W2349941664 @default.
- W2589061175 hasRelatedWork W2359196051 @default.
- W2589061175 hasRelatedWork W2359272898 @default.
- W2589061175 hasRelatedWork W2363314182 @default.
- W2589061175 hasRelatedWork W2364833512 @default.
- W2589061175 hasRelatedWork W2367826084 @default.
- W2589061175 hasRelatedWork W2368349612 @default.
- W2589061175 hasRelatedWork W2384550210 @default.
- W2589061175 hasRelatedWork W2389004186 @default.
- W2589061175 hasRelatedWork W2391054791 @default.
- W2589061175 hasRelatedWork W2394230160 @default.
- W2589061175 hasRelatedWork W2394321692 @default.
- W2589061175 hasRelatedWork W3011433712 @default.
- W2589061175 hasRelatedWork W3029263778 @default.
- W2589061175 hasRelatedWork W3031445140 @default.
- W2589061175 hasRelatedWork W3032518109 @default.
- W2589061175 hasRelatedWork W3035151690 @default.
- W2589061175 hasVolume "24" @default.
- W2589061175 isParatext "false" @default.
- W2589061175 isRetracted "false" @default.
- W2589061175 magId "2589061175" @default.
- W2589061175 workType "article" @default.