Mitsubishi Electric Corporation

Hitachi, Ltd.

Keio University

Tetsushi Azuma

Masateru Hayashi

Hiroshi Nishizawa

Kazuo Yamamoto

Hajime Nakajima

Taizo Honda

Kenji Inomata

Akira Morikawa

Akihide Shiratsuki

Yusuke Sakamoto

Toshihide Aiba

Masaki Taguchi

Osamu Takahara

Kazuhide Kodeki

Yukiko Hirano

Yasuto Kishii

Masakazu Nakanishi

Kenjiro Takemura

Yuta Kurashina

Natsuko Maeda

Makoto Sasano

Genichiro Fujii

Eri Hattori

An ultrasonic transducer () emits ultrasonic waves toward a culture solution () stored with cells () in a culture vessel (). An acquirer acquires information indicating a settling state of the cells () in the culture solution (). A controller controls an operation of the ultrasonic transducer () based on the information indicating the settling state of the cells ().

Cell culture device, cell culture method, and recording medium

Provided are a radiation measurement device and method that allow stable radiation measurement as compared with the prior art. The radiation measurement device includes a radiation detection unit 1 having a scintillator, an optical transmission member 21 for transmitting an optical signal generated in the radiation detection unit, and a signal processing unit 3 for calculating a radiation dose from the optical signal transmitted. The signal processing unit includes a compensation unit 7 for obtaining an optical transmission loss amount from a change in wavelength spectrum in the optical signal caused by radiation acting on the optical transmission member and performs compensation-control on the optical transmission loss amount, and outputs a compensated signal.

Radiation measurement device and method

A dose distribution calculation device of the invention is characterized by including: a beam information storing unit (a measured energy storing unit, a measured electric-charge storing unit, a measured beam-central axis storing unit), in which, when particle beam information of a particle beam generated by a particle beam therapy system is measured by a measuring device in confirmative radiation in which the particle beam is radiated to a phantom as a substitute for a treatment target, the thus-measured particle beam information is stored; and a total dose calculation unit for calculating a radiation dose distribution (a total dose distribution) on the basis of the measured particle beam information (a measured energy, a measured beam quantity (a measured number of electric charges), a measured position of beam central axis).

Dose distribution calculation device, particle beam therapy system, and dose distribution calculation method

A radioactivity analyzing apparatus for analyzing a radionuclide contained in a sample material. The apparatus includes a radiation detector that detects a radiation to be detected emitted from the sample material and a radiation analyzer configured to analyze the radiation based on an output from the radiation detector. The radiation analyzer includes a pulse-height analyzer configured to extract a pulse-height distribution from a pulse signal being output from the radiation detector and depending on the radiation, an inverse-problem operator configured to perform an inverse-problem solution of the pulse-height distribution to extract an energy spectrum of the radiation, and a deterioration detector configured to determine a deterioration state of the radiation detector based on the extracted energy spectrum.

Radioactivity analyzing apparatus

Growing community of inventors

Chiyoda-ku, Japan

Tetsushi Azuma