Siemens Aktiengesellschaft

Siemens Healthcare Gmbh

Nuray Technology Co., Ltd

Andreas Böhme

Walter Beyerlein

Markus Hemmerlein

Jürgen Oelschlegel

Jens Fürst

Oliver Heuermann

Yuan Cheng

Qi Qiu

Frank Sprenger

Johannes Walk

Moritz Beckmann

Florian Bauer

Houman Jafari

Rudolf Auernhammer

Peter Klinger

Peter Wehrle

An electron source includes a plurality of electron emission cathodes and at least one control electrode. A gate current regulator is provided for regulation of current flowing through the at least one control electrode.

Electron source

A method and an associated apparatus for controlling a heating current flowing through an emitter of a pulsed X-ray tube during pulse pauses are provided. The heating current is controlled by comparing a measured actual value of the heating current with a predefinable desired value of the heating current. A low-pass filtering of the actual value of the heating current is effected before the comparison. A time constant of the low-pass filtering is equal to a thermal time constant of the emitter. A correction of the actual value of the heating current is provided before the low-pass filtering by a first correction value. The first correction value is determined such that a tube current control during the pulses is not compensated for by the heating current control in the pulse pauses.

Method and apparatus for heating current control of a pulsed X-ray tube

An improved x-ray tube that includes a plurality of cathodes in a region under vacuum is provided. Several wirelessly activatable elements, which are each assigned to a cathode or a group of cathodes, are arranged in the region under vacuum and make an electrically conducting connection of the cathode or the group of cathodes to a cathode control voltage line when receiving a control signal from outside of the region under vacuum. A system that includes the improved x-ray tube and several transmitter elements for the wireless activation of the wirelessly activatable elements is also provided.

Multicathode X-ray tube

Growing community of inventors

Nürnberg, Germany

Andreas Böhme