Mitsuhiro Kon

Preclinical feasibility of EPID‐based transit dosimetry for total body irradiation

Tetsu Nakaichi, Hiroyuki Okamoto, Mitsuhiro Kon, Kazuki Takaso et autres

Abstract Background Conventional extended‐distance total body irradiation (TBI) is commonly verified using point dosimeters, which provide limited spatial information and require additional handling during a prolonged treatment procedure. A portable charge‐coupled device (CCD)‐based electronic portal imaging device (EPID) positioned downstream of the …

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Introduction of Near Field Communication for file sharing system in radiotherapy

Hiroyuki Okamoto, Takahito Chiaba, Masato Nishitani, Satoshi Nakamura et autres

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Commissioning and performance evaluation of commercially available mobile imager for image guided total body irradiation

Tetsu Nakaichi, Hiroyuki Okamoto, Mitsuhiro Kon, Kazuki Takaso et autres

BACKGROUND: The setup of lung shield (LS) in total body irradiation (TBI) with the computed radiography (CR) system is a time-consuming task and has not been quantitatively evaluated. The TBI mobile imager (TBI-MI) can solve this problem through real-time monitoring. Therefore, this …

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Failure modes and effects analysis study for accelerator‐based Boron Neutron Capture Therapy

Mihiro Takemori, Satoshi Nakamura, Toshimitsu Sofue, Mikiko Ito et autres

BACKGROUND: Boron Neutron Capture Therapy (BNCT) has recently been used in clinical oncology thanks to recent developments of accelerator-based BNCT systems. Although there are some specific processes for BNCT, they have not yet been discussed in detail. PURPOSE: The aim of this …

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Planning study: prone versus supine position for stereotactic body radiotherapy in prostate by CyberKnife

Mitsuhiro Kon, Hiroyuki Okamoto, Satoshi Nakamura, Kotaro Iijima et autres

This study aimed to clarify the differences in radiotherapy dose characteristics and delivery efficiency between the supine and prone positions in patients with prostate cancer using the CyberKnife. The planning computed tomography (CT) and delineations of the prone position were obtained by …

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Technical note: Analysis of brachytherapy source movement by high‐speed camera

Hiroyuki Okamoto, Kotaro Iijima, Takahito Chiba, Mihiro Takemori et autres

PURPOSE: To assess the accuracy of the movement of a brachytherapy source using a high-speed camera for evaluating source position, dwell time, and transit dose. METHODS: A high-speed camera was used to record the source position of an Ir-192 source relative to …

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