Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Tomomasa Nagahata"'
Autor:
Motonori Sakata, Tomomasa Nagahata, Taishi Matsuda, Kazuki Kubo, Takao Ichida, Kenji Matsumoto, Akinori Ienaga
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 76(10)
Purpose The purpose of this paper was to determine the optimal imaging conditions for four-dimensional cone-beam computed tomography (4D-CBCT) using an X-ray tube and a flat-panel detector mounted on a radiotherapy device. Methods The optimal imaging
Autor:
Masanobu Ishiguro, Takashi Iimori, Koichiro Abe, Teruo Ito, Tomomasa Nagahata, Hiroyuki Tsushima, Takayuki Igarashi, Makoto Hosono, Hiroshi Watanabe
Publikováno v:
Annals of Nuclear Medicine
The diagnostic reference levels (DRLs) are one of several effective tools for optimizing nuclear medicine examinations and reducing patient exposure. With the advances in imaging technology and alterations of examination protocols, the DRLs must be r
Autor:
Shota Nakama, Kenji Kishimoto, Susumu Shiomi, Tomomasa Nagahata, Yutaka Katayama, Takao Ichida, Akihiko Kakimi, Shigeaki Higashiyama, Joji Kawabe, Takashi Yamanaga
Publikováno v:
Japanese Journal of Radiological Technology. 73:1028-1038
PURPOSE The N-Isopropyl-p-[123I] Iodoamphetamine (123I-IMP) SPECT imaging reduces the image quality and quantitative accuracy due to scatter and septal penetration occurred by radioactive uptake from outside of the field of view such as the lungs. We
Autor:
Takashi, Yamanaga, Yutaka, Katayama, Shota, Nakama, Akihiko, Kakimi, Tomomasa, Nagahata, Kenji, Kishimoto, Takao, Ichida, Shigeaki, Higashiyama, Joji, Kawabe, Susumu, Shiomi
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 73(10)
The N-Isopropyl-p-[123I] Iodoamphetamine (We used the phantom filled with 10 and 25 kBq/mL for the brain and lung parts corresponding to radioactive concentration in the clinical study. The SPECT images were acquired with and without lung phantom usi
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 70(10)
A semi-solid polymer dosimetry system using agar was developed to measure the dose distribution close to metallic implants. Dosimetry of heterogeneous fields where electron density markedly varies is often problematic. This prompted us to develop a p
Publikováno v:
Japanese Journal of Radiological Technology. 53:1494-1499
Autor:
Takuhito, Tada, Tomomasa, Nagahata, Haruyuki, Fukuda, Masako, Hosono, Yoshie, Takada, Toshifumi, Nakajima, Yuichi, Inoue
Publikováno v:
Radiation medicine. 23(4)
On simulation radiographs of oblique fields, the spinal canal is estimated to be located on the deep surface of the tangential parts of the vertebral laminae within a width of the oblique diameter of the spinal canal. The aim of this study was to eva
Autor:
Masaru Yamasaki, Makoto Inoue, Tetsuo Okuda, Rie Yoshida, Tomomasa Nagahata, Shinichi Watanabe, Masachika Syougaki, Masakatsu Hatagawa, Mitsuji Higashida, Tetsuhiro Kubota
Publikováno v:
Japanese Journal of Radiological Technology. 52:371-373
Autor:
Masahiro Oomura, Tomohiro Sahara, Tetsuhiro Kubota, Tomomasa Nagahata, Makoto Inoue, Nobuhiko Shiizaki
Publikováno v:
Japanese Journal of Radiological Technology. 53:1246
Autor:
Tetsuhiro Kubota, Toshihiko Kimura, Junzi Shiraisi, Nobuhiko Shiizaki, Tomomasa Nagahata, Masatoshi Tamagawa
Publikováno v:
Japanese Journal of Radiological Technology. 52:1170