Kabushiki Kaisha Toshiba

National Institute of Radiological Sciences

Kazunao Maeda

Keiko Okaya

Yasushi Iseki

Koki Yanagawa

Katsushi Hanawa

Shinya Fukushima

Nobukazu Kakutani

Shinji Sato

Takuji Furukawa

Masao Takahashi

Kouji Noda

Taku Inaniwa

Atsuo Inoue

Teruyasu Nagafuchi

A movable part tracking and treatment apparatus includes an acquisition unit adapted to acquire a three-dimensional moving image and a first projection image generation unit adapted to generate a first projection moving image. The apparatus further includes an affected part image extraction unit adapted to extract the displaced affected part area from the first projection moving image and a tracing target image extraction unit adapted to extract the displaced tracing target from the first projection moving image. The apparatus also includes a first parameter derivation unit adapted to derive a first parameter indicative of position information on a beam irradiation point and a second parameter derivation unit adapted to derive a second parameter necessary to extract the corresponding tracing target.

Apparatus, method, and program for movable part tracking and treatment

According to one embodiment, A movable part tracking and treatment apparatus, includes: an acquisition unit adapted to acquire a three-dimensional moving image by imaging an inside of a body of a patient; a first projection image generation unit adapted to generate a first projection moving image by projecting the three-dimensional moving image on a two-dimensional surface from a fixed direction, the three-dimensional moving image including a tracing target and an affected part area that are part of internal organs in a displaced state, an affected part image extraction unit adapted to extract the displaced affected part area from the first projection moving image, a tracing target image extraction unit adapted to extract the displaced tracing target from the first projection moving image, a first parameter derivation unit is adapted to derive a first parameter indicative of position information on a beam irradiation point selected from the displaced affected part area in the first projection moving image, and a second parameter derivation unit adapted to derive a second parameter necessary to extract the corresponding tracing target from another projection moving image based on the tracing target extracted from the first projection moving image.

A particle beam irradiation apparatus that can measure and display a dose two-dimensional distribution during scan while reducing degradation of a particle beam shape, including a particle beam generation portion; a particle beam emission control portion; a two-dimensional beam scanning portion; a sensor portion including first linear electrodes arranged in parallel in a first direction and second linear electrodes arranged in parallel in a second direction orthogonal to the first direction; a beam shape calculation portion that calculates a center of gravity of the particle beam from outputs of each the first linear and second linear electrodes and that obtains a two-dimensional beam shape of the particle beam around the center of gravity; a storage portion that accumulates and stores the two-dimensional beam shapes; and a display portion that displays the two-dimensional beam shapes as a two-dimensional distribution of a dose.

Particle beam irradiation apparatus and control method of the particle beam irradiation apparatus

A particle beam irradiation apparatus includes a beam scanning indication unit which two-dimensionally indicates a position of a particle beam in series for each of slices obtained by dividing an affected area to be irradiated in an axial direction of the particle beam, a beam scanning unit which two-dimensionally scans the particle beam based on an indication signal from the beam scanning indication unit, a phosphor film which is provided between the beam scanning unit and a patient and emits light in an amount corresponding to a particle dose of the particle beam transmitting therethrough, an imaging unit which images the phosphor film for each of the slices, and a display unit which obtains an irradiation dose distribution of each of the slices from image data imaged by the imaging unit and displays the obtained irradiation dose distribution associated with a scanning position of the particle beam.

Particle beam irradiation apparatus and particle beam irradiation method

Growing community of inventors

Suginami-ku, Japan

Kazunao Maeda