Results 31 to 40 of about 170,362 (288)
Radiation Oncology, 2022 Background Based on a previous study on the feasibility of TomoEQA, an exit detector-based patient-specific pre-treatment quality assurance (QA) method for helical tomotherapy, an in-depth clinical evaluation was conducted.
Changhwan Kim +5 more
doaj +1 more source
Formation and dynamics of self-sustained neutron haloes in disk accreting sources [PDF]
, 2001 It has been recognized long ago that the presence of hot plasma in the inner accretion disks around black holes could lead to the neutron production via dissociation of helium nuclei.
A. A. Belyanin +11 more
core +2 more sources
IBA myQA SRS Detector for CyberKnife Robotic Radiosurgery Quality Assurance
Applied Sciences, 2022 The IBA myQA® SRS high-resolution solid-state detector was evaluated in the context of robotic radiosurgery delivered using CyberKnife®. The performance was investigated for periodic machine delivery quality assurance (DQA) and patient-specific treatment
Francesco Padelli +3 more
doaj +1 more source
Gamma-Index Passing Rates in Baseline Plans Measured with a Detector Array
International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2015 Purpose: This study provides a simple protocol for validation of the gamma passing rates and to identify the optimum values of % dose and mm criteria for dose distributions measured with a detector array. Methods: We chose ArcCHECK detector array to illustrate the concepts.
Stanislaw Szpala, Kirpal Kohli
openaire +2 more sources
Primordial Black Holes as Silver Bullets for New Physics at the Weak Scale [PDF]
, 2019 Observational constraints on gamma rays produced by the annihilation of weakly interacting massive particles around primordial black holes (PBHs) imply that these two classes of Dark Matter candidates cannot coexist.
Bertone, Gianfranco +4 more
core +3 more sources
Physica Medica, 2023 To assess the effect of sampling variability on the performance of individual charts (I-charts) for PSQA and provide a robust and reliable method for unknown PSQA processes.A total of 1327 pretreatment PSQAs were analyzed. Different datasets with samples in the range of 20-1000 were used to estimate the lower control limit (LCL). Based on the iterative
Guangjun Li +9 more
openaire +2 more sources
A practical method to optimize quality assurance results of arc therapy plans in beam modeling
Journal of Medical Physics, 2018 Dosimetric accuracy of a volumetric modulated arc therapy (VMAT) plan is directly related to the beam model, particularly with multileaf collimator characterization.
Jinyu Xue +4 more
doaj +1 more source
Radiation Oncology, 2022 Background The CyberKnife Xsight lung-tracking system (XLTS) provides an alternative to fiducial-based target-tracking systems (FTTS) for non-small-cell lung cancer (NSCLC) patients without invasive fiducial insertion procedures.
Thomas J. Klein +9 more
doaj +1 more source
, 2013 The gamma-index test has been commonly adopted to quantify the degree of agreement between a reference dose distribution and an evaluation dose distribution.
Bakai A +15 more
core +1 more source
Prediction and interpretation of gamma pass rate based on SHAP value feature selection
, 2023 Abstract Background SHAP values are suggested as a unique measure of feature importance in machine learning prediction models. It can explain the output of any machine learning prediction model and can also participate in the construction of machine learning prediction models as a feature selection mechanism for handling high-dimensional data ...
Qianxi Ni +5 more
openaire +1 more source