Siemens Aktiengesellschaft

Siemens Healthcare Gmbh

Michael Stark

Bernhard Sandkamp

Markus Schild

Franz Atzinger

Gerhard Hahm

Fabian Wloka

Carsten Illenseer

Raphael Henrich

Christoph Jablonski

Philipp Bernhardt

Dirk Ertel

The invention relates to a method () for creating x-ray images as well as to an x-ray system. During the creation of an x-ray image, a slit diaphragm () is moved in front of an object () to be x-rayed, along a path extending between a radiation source () and said object (), in order for the object () to be scanned. X-rays emitted by the radiation source () are detected by a detector () upon penetration of the slit diaphragm () and the object () to be x-rayed. In order to create an x-ray image using a simplified slot scanning technique, the x-ray image is created without the need for a second slit diaphragm () between the object () to be x-rayed and the detector (), and only the radiation of which the intensity (), detected by the detector () during the scan, exceeds a predefined threshold value is processed.

Method for the creation of X-ray images, and X-ray system

X-ray image data of an examination subject is acquired for an acquisition period by an X-ray detector of an X-ray system simultaneously with a decay process of a radioactive material taking place in or on the examination subject. The X-ray image data includes information relating to an X-ray attenuation distribution of the examination subject and information relating to the decay process. Correction image data representing the information relating to the decay process in the X-ray image data for the acquisition period is determined. Corrected X-ray image data for the acquisition period is generated using the X-ray image data and the correction image data.

Correcting X-ray image data relating to a decay process of a radioactive material

A method is provided for detecting x-ray quanta incident on a multi-pixel x-ray detector having a two-dimensional matrix composed of measurement-signal-generating pixels, wherein the multi-pixel x-ray detector is embodied as a direct solid-state detector, wherein the pixels, which generate a measurement signal within a predefined time interval and which in addition lie in a contiguous cluster composed of a plurality of pixels, are assigned to an event cluster by an evaluation unit and wherein their measurement signals are drawn upon for the purpose of approximating the position at which the x-ray quantum interacted with the multi-pixel x-ray detector.

Method and device for detecting x-ray quanta

An X-ray detector of conventional design having photodiodes and scintillator material arranged thereon is able, given a suitable read-out frequency matching a low dose to which the flat-panel X-ray detector is subjected, to obtain images during each read-out operation, from which images the energy of individual X-ray quanta can be derived. An item of X-ray-spectrum information about pixels in a grid pattern can be obtained thereby.

Method for obtaining an item of X-ray-spectrum information about pixels in a grid pattern

An X-ray detector having an active array comprising pixel elements for detecting X-ray radiation is provided to enable high-quality X-ray imaging, wherein each pixel element has a scintillator layer for converting X-ray radiation into light and a photodiode produced by means of CMOS technology for converting light into a measurable electrical signal, and wherein the pixel elements are arranged on a silicon substrate and a BOX (buried oxide) layer is sandwiched between the silicon substrate and the photodiode.

X-ray detector and medical X-ray device

A sensor element is provided for conversion of x-radiation into an electrical measurement signal, the sensor element including an x-radiation-absorbing fluid arranged in a housing, and a pressure sensor arranged to detect a pressure of the fluid on the pressure sensor and convert the detected pressure into an electrical measurement signal. A plurality of such sensor elements may be arranged in a matrix-type arrangement to form an x-ray detector.

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Forchheim, Germany

Michael Stark