Toshiba Electron Tubes & Devices Co., Ltd.

Kabushiki Kaisha Toshiba

Toshiba Electron Tube & Devices Co., Ltd.

Masaji Kanagami

Yuki Mizumura

Hidero Anno

According to one embodiment, a rotating-anode X-ray tube assembly includes a rotating-anode X-ray tube, a housing, a coolant, a first shell, an X-ray shielding member, a second shell and an air introduction unit. The first shell is provided apart from the housing and an envelope of the rotating-anode X-ray tube, and surrounds the envelope. The X-ray shielding member is provided between the first shell and the housing and apart from the housing. The second shell is provided apart from the housing to cause an airway to be formed between the second shell and the housing. The air introduction unit produces a flow of air in the airway.

Rotating-anode X-ray tube assembly with cooling system

X-ray tube for medical use

This invention provides an X-ray tube apparatus which can output X-rays of a dose suitable for radioscopy for a long time. In the apparatus, small focus filaments are provided on respective sides of a large focus filament, such that they have almost equal distances from the center of the large focus filament, and the inclination angles of converging electrodes surrounding the respective small focus filaments with respect to a cathode main body are set to almost equal angles within a range of 20 to 40&#xb0;.

Growing community of inventors

Utsunomiya, Japan

Masaji Kanagami