Tatsuya Sakasai
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View article: 7. Clinical Operations in a 0.35T MR-Linac
7. Clinical Operations in a 0.35T MR-Linac Open
View article: Assessment of intrafractional motion of the cervix–uterus by MR-guided radiotherapy system
Assessment of intrafractional motion of the cervix–uterus by MR-guided radiotherapy system Open
The uterus is known as one of the moving organs. We evaluated the movement of the uterus during irradiation and the effects of changes in the surrounding organs using a magnetic resonance (MR)-guided radiotherapy system. Seven patients wit…
View article: Film measurement and analytical approach for assessing treatment accuracy and latency in a magnetic resonance‐guided radiotherapy system
Film measurement and analytical approach for assessing treatment accuracy and latency in a magnetic resonance‐guided radiotherapy system Open
Purpose We measure the dose distribution of gated delivery for different target motions and estimate the gating latency in a magnetic resonance‐guided radiotherapy (MRgRT) system. Method The dose distribution accuracy of the gated MRgRT sy…
View article: Practical guidelines of online MR-guided adaptive radiotherapy
Practical guidelines of online MR-guided adaptive radiotherapy Open
The first magnetic resonance (MR)-guided radiotherapy system in Japan was installed in May 2017. Implementation of online MR-guided adaptive radiotherapy (MRgART) began in February 2018. Online MRgART offers greater treatment accuracy owin…
View article: Identifying risk characteristics using failure mode and effect analysis for risk management in online magnetic resonance-guided adaptive radiation therapy
Identifying risk characteristics using failure mode and effect analysis for risk management in online magnetic resonance-guided adaptive radiation therapy Open
Exploring the results of the FMEA enhanced our understanding of risk characteristics to improve QA program of online MRgART.
View article: Dosimetric effect of the intestinal gas of online adaptive stereotactic body radiotherapy on target and critical organs without online electron density correction for pancreatic cancer
Dosimetric effect of the intestinal gas of online adaptive stereotactic body radiotherapy on target and critical organs without online electron density correction for pancreatic cancer Open
Objective: This study aimed to assess the dosimetric effect of intestinal gas of stereotactic magnetic resonance (MR)-guided adaptive radiation therapy (SMART) on target and critical organs for pancreatic cancer without online electron den…
View article: Monte Carlo modeling of a 60Co MRI-guided radiotherapy system on Geant4 and experimental verification of dose calculation under a magnetic field of 0.35 T
Monte Carlo modeling of a 60Co MRI-guided radiotherapy system on Geant4 and experimental verification of dose calculation under a magnetic field of 0.35 T Open
Our purpose was to establish the commissioning procedure of Monte Carlo modeling on a magnetic resonance imaging–guided radiotherapy system (MRIdian, Viewray Inc.) under a magnetic field of 0.345 T through experimental measurements. To do …
View article: EP-1766: Modelling of MR-guided radiotherapy system on Monte Carlo code GEANT4
EP-1766: Modelling of MR-guided radiotherapy system on Monte Carlo code GEANT4 Open
View article: Dosimetric Characteristics of Double-Focused MLCs in MRI-Guided Radiation Therapy
Dosimetric Characteristics of Double-Focused MLCs in MRI-Guided Radiation Therapy Open