“…METHOD: In nine patients, a proton arc therapy (PAT) technique was compared with intensity modulated radiation therapy (IMRT) and proton beam therapy (PBT) techniques with respect to the planning target volume (PTV) and organs at risk (OAR). PTV coverage, conformity index (CI), homogeneity index (HI) and OAR doses were compared. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…In multivariate analysis, washout neither decreased the risk of LR, DM, or OAR nor increased overall or the cancer-specific 5-year survival. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Since dose constraints to organs at risk (OARs) were beyond established limits, CTVs were expanded by 5 mm. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The aim of this study is to assess the feasibility of MRI‐based, atlas‐based autosegmentation for organs at risk (OAR) and lymph node levels, and to compare the segmentation accuracy with CT‐based autosegmentation. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The plan quality was compared using homogeneity index (HI) and conformity index (CI) of the planning target volume (PTV) and dose sparing of organs at risk (OARs). Given the diversity of the tumor location, the 10 plans did not have a common OAR except for skin. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Among the algorithms used, the Inverse Planning Simulated Annealing (IPSA) optimizer is widely employed since it provides adequate dose coverage, minimizing dose to the OAR, but it is known to generate large dwell times in particular positions of the catheter. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Whole abdomen radiotherapy (WAR) for epithelial ovarian cancer, though effective, has been used sparingly due to inadequate target coverage and poor sparing of organs at risk (OAR) leading to significantly higher toxicities. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The aim of this study is to evaluate the ability of neutrophil gelatinase-associated lipocalin (NGAL) to early identify the development of acute renal damage in patients undergoing endovascular aneurysm repair (EVAR) or open aortic repair (OAR). MATERIALS AND METHODS: Serial samples of blood and urine were obtained from 25 patients undergoing both EVAR and OAR. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Knowledge‐based planning (KBP) can be used to estimate dose–volume histograms (DVHs) of organs at risk (OAR) using models. The task of model creation, however, can result in estimates with differing accuracy; particularly when outlier plans are not properly addressed. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Both VMAT and IMRT achieved similar plan quality in terms of dose sparing in the OAR and higher PTV coverage as compared to 3DCRT. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…When compared to the 3DCRT technique, the VMAT planning method was found to result in better target volume coverage, high doses to organs at risk (OAR) were reduced but greater OAR volumes received low doses. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…INTRODUCTION: Accurate delineation of targets and organs at risk (OAR) is required to ensure treatment efficacy and minimize risk of normal tissue toxicity with radiotherapy. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…For irradiated volumes of OARs, irradiated volume of rectum receiving 40 Gy (rectum V40) was significantly decreased in VMAT compared with IMRT. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…However, the HRCTV doses for approach C were significantly lower than those for approaches A and B for all parameters (D(95)-D(100)). As to the OAR, the three approaches showed no differences. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…We thus managed to map a desired radiation dose distribution from a patient’s PTV and OAR contours. As an additional advantage, relatively little data was used in the techniques and models described in this paper.…”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The maximum dose to a relatively small volume (0.1 cc) of the skin (OAR-Max) decreased from 100.66 Gy to 61.20 Gy (p < 0.05), and the mean skin dose (OAR-Mean) decreased from 49.20 Gy to 17.27 Gy (p < 0.05) after injection. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Plan robustness to inter-fractional changes was assessed in terms of the estimated target coverage and OAR dose. RESULTS: Organ motion-based robust optimisation was able to generate clinically acceptable treatment plans in the nominal scenario on the planning CT with no significant differences to OAR dose between the robust and non-robust planning techniques. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The dosimetric parameters of the two plans were compared to evaluate the improvement of dose sparing for the body volume between two targets (named interOAR) in F-VMAT. RESULTS: The mean dose of interOAR reduced significantly from 654.96 ± 113.38 cGy for O-VMAT, to 490.84 ± 80.26 cGy for F-VMAT (p = 0.018). …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…RESULTS: The doses reaching OAR for eBT plans were lower than for HDR‐BT plans. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The contours of target volume (TV) and organ at risk (OAR), and dose-volume coverage of targets were reviewed and scored (per-protocol, variation-acceptable and deviation-unacceptable) according to the protocol. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso