Zobrazeno 1 - 10
of 12
pro vyhledávání: '"TOMOHIRO KOUNO"'
Autor:
YUICHI AKINO, HIROYA SHIOMI, NAOICHI HIGASHINAKA, TOMOHIRO KOUNO, NOBUHISA MABUCHI, FUMIAKI ISOHASHI, YUJI SEO, KEI FUJIWARA, SETSUO TAMENAGA, KAZUHIKO OGAWA
Publikováno v:
Anticancer research. 43(1)
Lung and liver tumor dose coverage was evaluated for the CyberKnife synchrony respiratory tracking system (SRTS) with consideration of the motion tracking accuracy measured for motion patterns of individual patients.Seven treatment plans of six cases
Autor:
Shingo Kaneko, Futoshi Matsumoto, Toyokazu Tanabe, Ben Nanzai, Takuya Kuzuoka, Takao Gunji, Tomohiro Koyama, Tomohiro Kouno, Yuji Morita, Keitaro Yamazaki
Publikováno v:
ECS Transactions. 69:17-26
We developed micro-machines constructed using metal or polymer materials that move by converting the chemical energy of hydrogen peroxide (H2O2) and glucose to the mechanical energy of dioxygen (O2) bubble impulses. The conversion process is based on
Publikováno v:
Radiological Physics and Technology. 6:226-232
Our purpose in this study was to evaluate the accuracy of a new multi-planar dose measurement method. The multi-planar dose distributions were reconstructed at each depth by convolution of EPID fluence and dose kernels with the use of EPIDose softwar
Autor:
Yuji Nakaguchi, Kiyotaka Kakei, Masato Maruyama, Fujio Araki, Shunji Saiga, Nozomu Nagasue, Masahiro Hashida, Tomohiro Kouno
Publikováno v:
Japanese Journal of Radiological Technology. 68:443-452
The dosimetric properties between various 2D array detectors were compared and were evaluated with regard to the accuracy in absolute dose and dose distributions for clinical treatment fields. We used to check the dose accuracy: 2D array detectors; M
Autor:
Fujio, Araki, Tomohiro, Kouno, Takeshi, Ohno, Kiyotaka, Kakei, Fumiaki, Yoshiyama, Shinji, Kawamura
Publikováno v:
Medical physics. 40(9)
In this study, a dedicated device for ion chamber measurements of absorbed dose-to-water for a Nucletron microSelectron-v2 HDR (192)Ir brachytherapy source is presented. The device uses two ionization chambers in a so-called sandwich assembly. Using
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 69(7)
Image-guided radiotherapy (IGRT) is an increasingly commonly adopted technique. As a result, however, total patient dose is increasing rapidly, especially when kV-cone beam computed tomography (CBCT) is applied. This study investigated the dosimetry
Autor:
Kazunari Hioki, Hirofumi Tominaga, Tomohiro Kouno, Yoshinobu Shimohigashi, Nagisa Kanetake, Yuki Tomiyama, Jyunichi Sakata, Fujio Araki, Takeshi Oono
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 69(6)
Dose calculation algorithms in radiation treatment planning systems (RTPSs) play a crucial role in stereotactic body radiation therapy (SBRT) in the lung with heterogeneous media. This study investigated the performance and accuracy of dose calculati
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 68(11)
In this study, we developed a correction method for coordinate transformation errors that are produced in combination with the ExacTrac X-ray system (BrainLAB) and HexaPOD (Elekta) in image guided radiation therapy (IGRT). The positional accuracy of
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 68(11)
In this study, we investigated comprehensive quality assurance (QA) for respiratory-gated stereotactic body radiation therapy (SBRT) in the lungs using a real-time position management system (RPM). By using the phantom study, we evaluated dose libera
Autor:
Yuji Nakaguchi, Masahiro Hashida, Kiyotaka Kakei, Masato Maruyama, Nozomu Nagasue, Yudai Kai, Motoharu Sasaki, Eriko Takenaga, Tomohiro Kouno
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 68(10)
In this study, we evaluated various image guided radiation therapy (IGRT) systems regarding accuracy and patient throughput for conventional radiation therapy. We compared between 2D-2D match (the collation by 2 X-rays directions), cone beam computed