Accuthera Inc.

Aet, Inc.

Aet Japan, Inc.

Eiji Tanabe

Masaaki Ito

Koichiro Sugahara

A standing-wave linear accelerator structure has an electron gun; a first cavity axially adjacent to the electron gun, into which electrons are injected directly from the electrode gun; a pancake cavity disposed adjacent to the electron gun on a side of the first cavity opposite the electron gun; and a plurality of accelerating cavities including both on-axis cavities and side-coupled cavities, disposed serially after the at least one pancake cavity, to accelerate electrons injected from the electron gun through a central aperture formed in each of the on-axis cavities. The first cavity and the pancake cavity together form a buncher cavity. The accelerator structure omits the prebuncher and buncher cavities while retaining their functions.

Compact standing-wave linear accelerator structure

A phantom for simulating motions of both the body surface and the internal organs simultaneously, having a structure comprising of a body celland an internal organ part cell. The body cellsimulates a body. The internal organ part cellis installed inside a body celland contains internal organ cellsandwhich simulate internal organs like lung and others. Each of the body cell, the internal organ part celland the internal organ cellsandhas elastic surface and is able to expand like a balloon. Each cell is provided with a protrusionfor connecting a tubeto pass fluid.

Multi-cellular phantom, phantom control system, and phantom control method

A radiation therapy apparatus including a robot supporting a robot head; a therapeutic radiation source attached to the robot head; a collimator for adjusting a radiation field shape of therapeutic radiation radiated from the therapeutic radiation source; a first therapeutic radiation detector attached to the robot head; a couch configured to support a patient lying supine thereon; a second therapeutic radiation detector for detecting the therapeutic radiation, disposed opposite the first therapeutic radiation detector with the couch disposed therebetween; at least two X-ray sources and detectors for position detection of a marker and/or a treatment target; an image processor for reconstructing an image of the treatment target; and a CPU that computes the intensity, irradiation direction, dose, and dose distribution of the therapeutic radiation, and dose absorbed by the treatment target, radiation field shape, and position of the treatment target in real time for feedback to a next irradiation.

Real-time three-dimensional radiation therapy apparatus and method

An X-ray collimator for controlling an X-ray radiation field, having a lower base member, a pair of regulating members, a pair of surrounding members having substantially U-shaped forms in planar view, N columnar members surrounded by the pair of surrounding members (where N is 4, 6, or 8), a guiding member, a pair of moving members moving parallel to the opposed surfaces of the regulating members, an upper base member, a first motor for horizontally moving the pair of moving members, and a second motor for moving the columnar members. The first motor is driven to horizontally move the pair of moving members over the same distance in opposite directions. The second motor is configured to move one of the columnar members along an internal surface of the surrounding member surrounding the columnar member, thereby moving the other N&#x2212;1 columnar members sequentially.

X-ray collimator

An X-ray treatment apparatus comprises a low energy X-ray generator for detecting a marker, a marker sensor detecting a position of the marker fixed in the patient to a couch, and both low energy X-ray generator and the marker sensor are installed in the couch, a high energy X-ray generator for treatment, a X-ray sensor for treatment detecting the high energy X-ray for treatment. An X-ray treatment method using the X-ray treatment apparatus comprises the steps of detecting a position of a marker by the marker sensor, irradiating to a lesion the high energy X-ray for treatment, detecting the penetrated high energy X-ray for treatment by the X-ray sensor for treatment, modifying the beam profile, the dosage or/and the radiation direction of the X-ray for treatment according to the latest data of the sensors, performing the next radiation for the lesion.

Apparatus and method for X-ray treatment

An electron beam corresponding to radiation intensity data is output from an electron source by supplying high energy pulses p-through p-n, which correspond to the radiation intensity data of a radiation field, to the electron source from a power source. This electron beam is deflected so as to be incident in parallel to the medial axis of a plurality of X-ray target tubes-through-n by a deflection means comprising electromagnets, such that X-ray beams x-through x-n, which are produced when the electron beam collides with an inner wall of an X-ray target tube are irradiated with a desired intensity.

X-ray generator

A microminiature microwave electron source excited by a pulsed microwave power through a coaxial to emit electrons includes an electrically conductive chamber that is connected to an external conductor of the coaxial cable at an openings end thereof and has an opening anode in a bottom portion thereof, a central conductor adjacent to the electron source, the central conductor having one end thereof connected to a central conductor of the coaxial cable, a carbon nanotube cold cathode formed on the other end thereof being supported by the chamber such that the cold cathode opposes the anode, a coupling iris that airtightly and fixedly supports the central conductor at an opening end of the chamber, and a connecting device for electrically and mechanically connecting the opening end of the chamber to the central conductor of the coaxial cable so as to connect the central of the electron source to the central conductor of the coaxial cable.

Growing community of inventors

Kawasaki, Japan

Eiji Tanabe