Results 1 to 10 of about 234,122 (97)

Derivative based sensitivity analysis of gamma index

open access: yesJournal of Medical Physics, 2015
Originally developed as a tool for patient-specific quality assurance in advanced treatment delivery methods to compare between measured and calculated dose distributions, the gamma index (γ) concept was later extended to compare between any two dose ...
Biplab Sarkar, Anirudh Pradhan, T Ganesh
doaj   +2 more sources

PRIMO Monte Carlo Simulation and One-dimensional Gamma Index Analysis as a Tool to Validate Experimentally Measured Beam Data and Treatment Planning System Calculated Dose Distribution [PDF]

open access: yesJournal of Medical Physics
Purpose: The purpose of this study was to validate experimentally measured beam data, and treatment planning system (TPS) calculated volumetric modulated arc therapy (VMAT) three-dimensional (3D) dose distribution using PRIMO Monte Carlo (MC) simulation ...
Ngangom Robert   +4 more
doaj   +2 more sources

Evaluating the Impact of Various Parameters on the Gamma Index Values of 2D Diode Array in IMRT Verification

open access: yesJournal of Medical Signals and Sensors, 2018
Background: MapCHECK2 is a two-dimensional diode arrays planar dosimetry verification system. Dosimetric results are evaluated with gamma index. This study aims to provide comprehensive information on the impact of various factors on the gamma index ...
Keyvan Jabbari   +4 more
doaj   +2 more sources

Radiological and physico-chemical characterization of red mud as an Al-containing precursor in inorganic binders for the building industry [PDF]

open access: yesNuclear Technology and Radiation Protection, 2021
The potential re-use of red mud in the building and construction industry has been the subject of research of many scientists. The presented research is a contribution to the potential solution of this environmental issue through the synthesis ...
Kljajević Ljiljana M.   +6 more
doaj   +1 more source

Review Paper: A Review Study of Possible Errors in the Process of Dose Delivery of Intensity Modulated Radiation Therapy (IMRT) [PDF]

open access: yesفیزیک کاربردی ایران, 2021
Intensity Modulated Radiation Therapy (IMRT) is one of the modern technologies of external radiotherapy, which underwent widespread clinical adoption in medical centers. Modern radiotherapy makes use of new technologies in design, treatment, and delivery
Vida Khodabandeh Baygi   +2 more
doaj   +1 more source

Collapsed cone superposition algorithm validation for chest wall tangential fields using virtual wedge filters

open access: yesJournal of Medical Signals and Sensors, 2023
Background: Virtual wedge (VW) is used in radiotherapy to compensate for missing tissues and create a uniform dose distribution in tissues. According to TECDOC-1583 and technical reports series no.
Ahad Zeinali   +3 more
doaj   +1 more source

Commissioning validation of a brachytherapy treatment planning system with egsnrc monte carlo code and EBT3 GAFChromic film

open access: yesJournal of Medical Physics, 2022
Aims: Most brachytherapy treatment planning system (TPS) commissioning requires data input based on the American Association of Physicists in Medicine Task Group-43 formalism. The commissioning accuracy is very important for dose calculation.
Mohammed Lahlabou, Rachid Khelifi
doaj   +1 more source

Sassi of Matera Building Material: High-Resolution Gamma-Ray Spectroscopy Characterization for Radioprotection

open access: yesBuildings, 2021
The Sassi of Matera (Basilicata region, southern Italy) is a peculiar site, but not unique in Italy, from a landscape point of view. Most of the buildings are excavated in rocks of calcarenite origin and used as homes and accommodation facilities.
Valeria Artiola   +3 more
doaj   +1 more source

Introduction of a Reliable Software for the Calculation of the Gamma Index [PDF]

open access: yesIranian Journal of Medical Physics, 2020
Introduction: The gamma index is a known parameter for radiotherapy dose verification. Many free and commercial programs have been written for the calculation of this index.
Sanaz Hariri Tabrizi   +2 more
doaj   +1 more source

The normalized signless laplacian estrada index of graphs [PDF]

open access: yesTransactions on Combinatorics, 2023
Let $G$ be a simple connected graph of order $n$ with $m$ edges. Denote by $% \gamma _{1}^{+}\geq \gamma _{2}^{+}\geq \cdots \geq \gamma _{n}^{+}\geq 0$ the normalized signless Laplacian eigenvalues of $G$. In this work, we define the normalized signless
Ş. Burcu Bozkurt Altındağ   +3 more
doaj   +1 more source

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