Zobrazeno 1 - 10
of 192
pro vyhledávání: '"Akira Masaoka"'
Autor:
Yukari Nagayasu, Shoki Inui, Yoshihiro Ueda, Akira Masaoka, Masahide Tominaga, Masayoshi Miyazaki, Koji Konishi
Publikováno v:
Journal of Medical Physics, Vol 49, Iss 3, Pp 335-342 (2024)
Aims: This study aimed to evaluate the geometrical accuracy of atlas-based auto-segmentation (ABAS), deformable image registration (DIR), and deep learning auto-segmentation (DLAS) in adaptive radiotherapy (ART) for head-and-neck cancer (HNC). Subjec
Externí odkaz:
https://doaj.org/article/c079bb8921084ac89b27fffd84cd53c9
Autor:
Yuya Nitta, Yoshihiro Ueda, Masaru Isono, Shingo Ohira, Akira Masaoka, Tsukasa Karino, Shoki Inui, Masayoshi Miyazaki, Teruki Teshima
Publikováno v:
Journal of Medical Physics, Vol 46, Iss 2, Pp 66-72 (2021)
Purpose: To evaluate customizing a knowledge-based planning (KBP) model using dosimetric analysis for volumetric modulated arc therapy for pancreatic cancer. Materials and Methods: The first model (M1) using 56 plans and the second model (M2) using 3
Externí odkaz:
https://doaj.org/article/59713cde0d70475eb39bb3abe116fcc7
Autor:
Shingo Ohira, Yoshihiro Ueda, Yuichi Akino, Misaki Hashimoto, Akira Masaoka, Takero Hirata, Masayoshi Miyazaki, Masahiko Koizumi, Teruki Teshima
Publikováno v:
Radiation Oncology, Vol 13, Iss 1, Pp 1-9 (2018)
Abstract Purpose The HyperArc VMAT (HA-VMAT) planning approach was newly developed to fulfill the demands of dose delivery for brain metastases stereotactic radiosurgery. We compared the dosimetric parameters of the HA-VMAT plan with those of the con
Externí odkaz:
https://doaj.org/article/d3520a8744f64548b41c30177c2fb201
Autor:
Shoki Inui, Yoshihiro Ueda, Shingo Ohira, Masaru Isono, Akira Masaoka, Seiya Murata, Yuya Nitta, Tsukasa Karino, Masayoshi Miyazaki, Teruki Teshima
Publikováno v:
Journal of Medical Physics, Vol 43, Iss 4, Pp 230-235 (2018)
Purpose: The aim of this study is to compare the interfractional setup reproducibility of two types of patient immobilization devices for prostate cancer receiving image-guided radiation therapy (IGRT). Materials and Methods: The MOLDCARE (MC) involv
Externí odkaz:
https://doaj.org/article/95e7cba04fc0450a914ee028222beb59
Autor:
YUKARI NAGAYASU, SHINGO OHIRA, TOSHIKI IKAWA, AKIRA MASAOKA, NAOYUKI KANAYAMA, TAKAHISA NISHI, TANAKA KAZUNORI, YUTARO YOSHINO, MASAYOSHI MIYAZAKI, YOSHIHIRO UEDA, KOJI KONISHI
Publikováno v:
In Vivo; Jul/Aug2024, Vol. 38 Issue 4, p1712-1718, 7p
Autor:
Riho Komiyama, Shingo Ohira, Hikari Ueda, Akira Masaoka, Toshiki Ikawa, Makoto Taniguchi, Masaru Isono, Masayoshi Miyazaki, Koji Konishi
Publikováno v:
Japanese Journal of Radiological Technology. 79:252-261
Autor:
HARUHI TSURU, YOSHIHIRO UEDA, MIKOTO TAMURA, HAJIME MONZEN, SHINGO OHIRA, AKIRA MASAOKA, SHOUKI INUI, KOJI KONISHI, JUNICHI FUKUNAGA, HIROKAZU MIZUNO, MASAYOSHI MIYAZAKI, MASAHIKO KOIZUMI
Publikováno v:
In Vivo
Background/Aim: The aim of this study was to evaluate the mechanical performance and the effect on dose distribution and deliverability of volumetric modulated arc therapy (VMAT) plans for prostate cancer created with the commercial knowledge-based p
Autor:
Yuya Nitta, Yoshihiro Ueda, Seiya Murata, Masaru Isono, Shingo Ohira, Akira Masaoka, Shoki Inui, Hayate Washio, Reimi Yoshinaka, Sagawa Tomohiro, Masayoshi Miyazaki, Teruki Teshima
Publikováno v:
Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology. 27(5)
We evaluated the setup error and dose absorption of an immobilization system with a shell and wooden baseplate (SW) for lung stereotactic body radiotherapy (SBRT).Setup errors in 109 patients immobilized with an SW or BodyFix system (BF) were compare
Autor:
Akira Masaoka, Shingo Ohira, Riho Komiyama, Hikari Ueda, Naoyuki Kanayama, Yoshihiro Ueda, Masaru Isono, Teruki Teshima, Masayoshi Miyazaki
Publikováno v:
Journal of Applied Clinical Medical Physics
Purpose This study investigated the intra‐fractional motion (IM) of patients immobilized using the QFix Encompass Immobilization System during HyperArc (HA) treatment. Method HA treatment was performed on 89 patients immobilized using the Encompass
Autor:
Akira Masaoka, Teruki Teshima, Masahiko Koizumi, Shingo Ohira, Hayate Washio, Yoshihiro Ueda, Masayoshi Miyazaki, Kentaro Wada, Naoyuki Kanayama, Kazuhiko Ogawa, Yuichi Akino, Yuhei Koike
Publikováno v:
Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB). 85
To construct a deep convolutional neural network that generates virtual monochromatic images (VMIs) from single-energy computed tomography (SECT) images for improved pancreatic cancer imaging quality.Fifty patients with pancreatic cancer underwent a