T
Takehiro Tomitani
Researcher at National Institute of Radiological Sciences
Publications - 64
Citations - 1668
Takehiro Tomitani is an academic researcher from National Institute of Radiological Sciences. The author has contributed to research in topics: Detector & Beam (structure). The author has an hindex of 19, co-authored 64 publications receiving 1571 citations.
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Journal ArticleDOI
Image Reconstruction and Noise Evaluation in Photon Time-of-Flight Assisted Positron Emission Tomography
TL;DR: In this article, a reconstruction algorithm for TOF-positron computed tomography (PCT) based on the back-projection with 1-dimensional weight and 2-dimensional filtering is presented.
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Design study of a raster scanning system for moving target irradiation in heavy-ion radiotherapy.
Takuji Furukawa,Taku Inaniwa,Shinji Sato,Takehiro Tomitani,Shinichi Minohara,Koji Noda,Tatsuaki Kanai +6 more
TL;DR: The result shows the possibility of practical realization of moving target irradiation with pencil beam scanning, and the present status of the raster scanning system for the HIMAC new treatment facility is described.
Journal ArticleDOI
Washout measurement of radioisotope implanted by radioactive beams in the rabbit
H. Mizuno,Takehiro Tomitani,Mitsutaka Kanazawa,Atsushi Kitagawa,J Pawelke,Yasushi Iseki,E. Urakabe,M. Suda,Akihiro Kawano,R Iritani,Satoru Matsushita,Taku Inaniwa,Teiji Nishio,Shigeo Furukawa,K. Ando,Yoshihiro Nakamura,Tatsuaki Kanai,Keizo Ishii +17 more
TL;DR: The washout effect must be taken into account for the verification of treatment plans by means of positron camera measurements and time-activity curves of both brain and thigh muscle were clearly explained by the three-component model analysis.
Journal ArticleDOI
Positron camera for range verification of heavy-ion radiotherapy
Yasushi Iseki,Yasushi Iseki,Hideyuki Mizuno,Yasuyuki Futami,Takehiro Tomitani,Tatsuaki Kanai,Tatsuaki Kanai,Mitsutaka Kanazawa,Atsushi Kitagawa,Takeshi Murakami,Teiji Nishio,M. Suda,E. Urakabe,Akira Yunoki,Hirotaka Sakai +14 more
TL;DR: In this article, a positron camera, consisting of a pair of Anger-type scintillation detectors, was developed to verify ranges by using positron emitter beams, and a linear response of a 0.3 mm standard deviation within a ±200 mm region were obtained.
Journal ArticleDOI
Washout studies of 11C in rabbit thigh muscle implanted by secondary beams of HIMAC
Takehiro Tomitani,J Pawelke,Mitsutaka Kanazawa,Kyosan Yoshikawa,Katsuya Yoshida,M Sato,A Takami,M Koga,Yasuyuki Futami,Atsushi Kitagawa,E. Urakabe,M. Suda,Hideyuki Mizuno,Tatsuaki Kanai,H Matsuura,I Shinoda,S Takizawa +16 more
TL;DR: The washout rate of 11C activity implanted by injecting energetic 11C beams into thigh muscle of a rear leg of a rabbit is presented and it is found that about one third of the implanted beta+ activity can be used for imaging and the rest was washed out of the target area.