Siemens Aktiengesellschaft

Siemens Medical Solutions Usa, Inc.

Siemens Healthcare Gmbh

Stefan Lautenschläger

Sigrid Ferschel

Norbert Rahn

Scott Bradley Baker

Matthias John

Benno Heigl

Michael Pflaum

Jessica Amberg

Ali-Nejat Bengi

Hayo Knoop

Manfred Koch

Kerstin Sonntag

Danyu Liu

Thomas Möller

Kerstin Dr Müller

A method for representing a blood vessel including a thrombosed section of the blood vessel in a patient is provided. The method includes capturing a first volume data set after administration of a contrast agent, locating a proximal and/or distal end of the thrombosed section of the blood vessel with the aid of the first volume data set, and defining a data capture area for a second volume data set based on the proximal and/or distal end of the thrombosed section of the blood vessel that has been located. The method also includes capturing the second volume data set, segmenting the thrombosed section of the blood vessel from the second volume data set, capturing fluoroscopic images, and superimposing the segmented thrombosed section of the blood vessel with the fluoroscopic images.

Method and apparatus for visualizing a blood vessel

The invention relates to elements of a method () for determining a damage characteristic value of a kidney (). Images comprising the kidney () and the kidney artery () are entered into the method (), from a three-dimensional digital subtraction angiography which is carried out by administering a contrast medium at the proximal end of the kidney artery () and comprises a fill run and a mask run, said method () comprising the following method steps: S) determining a parenchymal blood volume into which the subtractions from images of the fill run and the mask run of the three-dimensional digital subtraction angiography are entered, additionally determining an arterial input function and normalizing the parenchymal blood volume with said arterial input function; S) segmenting the kidney (), determining an average normalized parenchymal blood volume value, and determining a total value of the parenchymal blood volume into which the normalized parenchymal blood volume values of the segmentation of the kidney () are entered; S) receiving an average normalized parenchymal blood volume normal value and a total normal value for a parenchymal blood volume, and determining at least one damage characteristic value of the kidney () into which the average normalized parenchymal blood volume value and the average normalized parenchymal blood volume normal value and/or the total value of the parenchymal blood volume and the total normal value of a parenchymal blood volume are entered; S) issuing the at least one damage characteristic value of the kidney ().

Method and device for determining a damage characteristic value of a kidney

A method of guiding a catheter during an embolization operation includes receiving volume data of a patient volume, the patient volume including a lesion and a feeding vessel for the lesion, detecting the feeding vessel in the volume data, define a vessel connection path for the feeding vessel, the vessel connection path connecting first and second points in the volume data, the second point being disposed along the feeding vessel, receiving fluoroscopic projection data of the patient volume, and rendering the fluoroscopic projection data with an overlay during the embolization operation, the overlay including the vessel connection path for the feeding vessel.

PAE treatment for BPH

A method for determining a vascularity of an object located in a body is proposed. A multidimensional volume image of a target area of the body including the object is acquired. The object is segmented in the volume image. An expanded volume of the object is calculated by expanding structure edges of a volume of the object in the volume image with a predetermined size. The volume of the object is subtracted from the expanded volume of the object for determining an immediate vicinity of the object. A further object in the volume image having a determined minimum volume in the immediate vicinity of the object is segmented. A number of voxels of the further object is compared with a total number of voxels in the immediate vicinity of the object for determining the vascularity of the object.

Method and apparatus for determining the vascularity of an object located in a body

A method for representing an exposure to radiation of an examination area of an object caused by radiological imaging is proposed. A 3D image of the examination area of the object being examined is acquired. Absorption coefficients of the examination area are determined. The radiation exposure of the examination area caused by radiological imaging is determined and is represented in the 3D image. A termination criterion is queried. The radiation exposure of the examination area is iteratively determined till the termination criterion is fulfilled.

Method for representing the radiation exposure of an examination area of an object caused by radiological imaging and corresponding imaging device

A method and a system for determining properties of a vessel in a medical image are provided. The method involves displaying the medical image including the vessel. The displayed vessel is segmented and indicated in the medical image. For an indicated vessel, a maximum curvature along a length of the vessel is determined as the property of the vessel. Another vessel parameter which can be determined is the smallest diameter along the length of the vessel.

Method for determining properties of a vessel in a medical image

A method and a system for indicating a feeding vessel of a malformation in a medical image are provided. The method first displays the medical image of the malformation and its surrounding vessels. This enables a manual selects a portion of the displayed medical image with reference to the tumor. The feeding vessel of the tumor is segmented and finally indicated in the medical image based on said manual selection.

Method and system for indicating a feeding vessel of a malformation in a medical image

A system automatically detects objects in an image and automatically displays a chosen object if the object is not currently visible in real time. An image data processing system automatically displays potentially hidden features in 3D (three dimensional) medical image data. A repository includes a 3D (three dimensional) image dataset representing an anatomical volume of interest. An image data processor processes the dataset retrieved from the repository by, (a) automatically detecting if a first object is obscured by a second object in the 3D image dataset, (b) automatically determining if the first object is visible by rotating the anatomical volume of interest and (c) rotating the anatomical volume of interest until the first object is visible in response to a command. A display processor initiates display of the rotated anatomical volume of interest.

Image data and annotation processing system

An image processing system in the medical field is provided. The system for processing image data includes at lest two graphics processors, at least one renderer module for rendering image data and at least one reconstruction module for volume reconstruction. In a first operating mode of the system in which at least one reconstruction module is inactive, the instructions of at least one renderer module is able to be executed by at least two of the graphics processors. In a second operating mode of the system in which at least one reconstruction module is active, the instructions of at least one renderer module and the instructions of at least one reconstruction module is able to be executed separately on different graphics processors of the said graphics processors. During operation in one of the two operating modes, a switch can be made to the other operating mode in each case.

System and method for processing of image data in the medical field

Method for the representation of image data from several image data volumes in at least one common image representation on an image display unit connected to a computer, in particular for the representation of medical image data, whereby in the or at least one image representation image data from at least one data volume which are to be assigned or have been assigned to different areas of the image representation are represented by the computer, at least in part, with reciprocally different opacity.

Method for a representation of image data from several image data volumes in a common image representation and associated medical apparatus

A method for assessing a rupture risk of at least one aneurysm of a patient, with the rupture risk being assessed by a computing device as a function of at least one personal factor specific to the patient and at least one anatomy-linked factor relevant to the anatomy of the and/or in the area of the at least one aneurysm and at least one simulation-linked factor determined with reference to at least one simulation carried out by means of the computing device and/or a further computing device and based on anatomical data for the at least one aneurysm.

Method for assessing a rupture risk of an aneurysm of a patient and associated system

For detecting the relative location of a laser or laser fan beam relative to the x-ray geometry of an x-ray device, a method for calibrating the position of the laser fan beam generated by a laser in relation to the projection geometry of the x-ray device is proposed. The x-ray device comprises an x-ray imaging system featuring an x-ray source and an x-ray detector. The x-ray source, the x-ray detector, the laser, and an imaging facility are arranged on a support. An optical x-ray calibration phantom is used for the calibration. The position of the imaging facility relative to the projection geometry is determined. The position of the laser fan beam relative to the imaging facility is determined. The position of the laser fan beam relative to the projection geometry is reconstructed.

Method for calibrating the position of a laser fan beam relative to the projection geometry of an X-ray device and X-ray device

The invention relates to a method for determining an optimal output of an ablation catheter for a myocardial ablation in a patient with the following steps: creation of at least one at least three-dimensional image recording of an ablation region provided for the myocardial ablation using at least one image recording apparatus; at least partial segmentation of the recorded ablation region to obtain segmentation information using a computation apparatus; at least partial determination from the segmentation information of the location-dependent thickness of the myocardium in the ablation region by the computation apparatus; and determination of the optimal output of the ablation catheter, in particular by the computation apparatus or a separate computation apparatus of an ablation catheter system, as a function of the determined myocardium thickness.

Method for determining an optimal output of an ablation catheter for a myocardial ablation in a patient and associated medical apparatus

The present invention relates to a method for segmenting a myocardial wall with the following steps: recording a first data record and a second data record in the same cardiac phase by means of x-ray radiation with differing radiation intensities, reconstructing the myocardial wall from the first and second data record. To generate a detailed and complete reconstruction of the myocardial wall, it is proposed that the method be supplemented by the following steps: separating an inside and an outside of the myocardial wall from the data record recorded with higher radiation intensity, and separating tissue interspersing the myocardial wall between the inside and the outside, in particular fatty tissue, from the data record recorded with lower radiation intensity.

Method for segmenting a myocardial wall and device for detecting a coronary artery with pathological changes

The invention relates to a method for differentially representing myocardial tissue in different states of damage, comprising the following steps: administering a myocardium-suitable contrast agent to a patient under examination; entering at least one patient-specific parameter affecting the speed of uptake by and elimination from the myocardium of said contrast agent; calculating a point in time after administration of the contrast agent at which a difference between a contrast agent content in necrotic myocardial tissue and a contrast agent content in non-necrotic myocardial tissue attains a maximum value, on the basis of the at least one patient-specific parameter, and carrying out, at the point in time calculated, a late-phase CT scan for accentuation of necrotic myocardial tissue compared to non-necrotic myocardial tissue. The invention likewise relates to apparatus, in particular for carrying out the method.

Growing community of inventors

Hausen, Germany

Stefan Lautenschläger