Siemens Healthcare Gmbh

Otto-Von-Guericke-Universität Magdeburg

Thomas Hoffmann

Georg Rose

Oliver Großer

Maciej Pech

Mathias Leopold

Martin Skalej

Oliver Grosser

The invention relates to a computer-assisted tomography (CT) system having the following features: a) at least one X-ray source, b) at least one patient couch for supporting a patient, c) at least one first X-ray detector, provided permanently or at least temporarily in the ray path of the X-rays radiated by the X-ray source through the patient couch, d) at least one second X-ray detector, provided permanently or at least temporarily in the ray path of the X-rays radiated by the X-ray source through the patient couch, e) at least one actuable drive mechanism, using which the first and/or second X-ray detector can be moved from a position in the ray path of the X-rays radiated by the X-ray source through the patient couch, to a position outside the ray path and vice versa, f) at least one electronic control device that is configured to actuate the drive mechanism.

Computer-assisted tomography system

A three-dimensional subtraction angiography image data set including a target region of the patient is acquired. A region of interest is selected. An imaging geometry is defined for monitoring the intervention using an X-ray device. The image-obscuring blood vessels that superimpose the region of interest in the imaging geometry and imaging zones that show fractions of the image-obscuring blood vessels in the imaging geometry are determined. Path information relating to the image-obscuring blood vessels is defined. The information relating to the path is input into a two-dimensional forward projection data set. A fluoroscopic image is acquired in the imaging geometry. Pixels showing the image-obscuring blood vessels in the fluoroscopic image are determined using the path information and image intensity information from the fluoroscopic image. A masked image of the image-obscuring blood vessels is subtracted. The fluoroscopic image that has been modified is displayed.

Providing image support to a practitioner

Growing community of inventors

Madgeburg, Germany

Thomas Hoffmann