Koninklijke Philips Corporation N.V.

Koninklijke Philips Electronics N.v.

Philips Intellectual Property & Standards Gmbh

Hans Barschdorf

Cristian Lorenz

Thomas Blaffert

Juergen Weese

Tobias Klinder

Jens Von Berg

Thomas Buelow

Alexandra Groth

Steffen Renisch

Joerg Sabczynski

Geoffrey Harding

Rafael Wiemker

Stewart Young

Michael Harald Kuhn

Gerhard Martens

Frank Michael Weber

Axel Thran

Klaus Erhard

Kirsten Regina Meetz

Sven Kabus

Bernd R David

Nicole Schadewaldt

Frank Bergner

Hannes Nickisch

Bernd Schweizer

Harald Sepp Heese

Helko Lehmann

Astrid Ruth Franz

Sebastian Peter Michael Dries

Tom Brosch

Ingwer Curt Carlsen

Dominik Benjamin Kutra

Roland Johannes Opfer

Ruediger Grewer

Raghed Hanna

A system and computer-implemented method are provided for annotation of image data. A user is enabled to iteratively annotate the image data. An iteration of said iterative annotation comprises generating labels for a current image data part based on user-verified labels of a previous image data part, and enabling the user to verify and correct said generated labels to obtain user-verified labels for the current image data part. The labels for the current image data part are generated by combining respective outputs of a label propagation algorithm and a machine-learned classifier trained on user-verified labels and image data and applied to image data of the current image data part. The machine-learned classifier is retrained using the user-verified labels and the image data of the current image data part to obtain a retrained machine-learned classifier.

Interactive iterative image annotation

The present invention relates to an apparatus for tomosynthesis image reconstruction. It is described to provide () a first projection image data set and a second projection image data set acquired after acquisition of the first projection image data set, wherein, the first projection image data set comprises first projection data, and the second projection image data set comprises second projection data, and wherein the first projection image data set is useable for the reconstruction of a tomosynthesis image of at least a region of interest of a body part and wherein the second projection image data set is useable for the reconstruction of a tomosynthesis image of at least the region of interest of the body part. A subset of the first projection data is selected (). An enhanced image of at least the region of interest of the body part is reconstructed () on the basis of the subset of the first projection data and second projection reconstruction data comprising at least a first subset of the second projection data. Information is output () relating to the enhanced image of at least the region of interest of the body part.

Apparatus for tomosynthesis image reconstruction

A method and related system (IPS) to support definition of a sub-volume (SV) in an initial image volume (IV).

Virtual interactive definition of volumetric shapes

An apparatus, a method and a computer program for visualizing a conduction tract of a heart include adapting a generic heart model to match geometrical data of a patient's heart, where model data, corresponding to the generic heart model and indicating a shape and/or position of the conduction tract, is modified in accordance to the adaptation of the generic heart model. The modification of the model data is further refined based on electrophysiological data of the patient to produce refined model data, and the refined model data is used for generating a visualization of a refined model heart indicating a refined shape and/or refined position of the conduction tract of the patients heart.

Apparatus and method for visualizing a conduction tract of heart

A method is provided for generating a deformable model () for segmenting an anatomical structure in a medical image. The anatomical structure comprises a wall. The deformable model () is generated such that it comprises, in addition to two surface meshes (), an intermediate layer mesh () for being applied in-between a first surface layer of the wall and a second surface layer of the wall. In generating the intermediate layer mesh (), the mesh topology of at least part () of the intermediate layer mesh is matched to the mesh topology of one of the surface meshes (), thereby establishing matching mesh topologies. The deformable model (), as generated, better matches the composition of such walls, thereby providing a more accurate segmentation.

Model-based segmentation of an anatomical structure

A system () for segmenting an object in an image adapts a first model for segmenting the object to the image. A feature is extracted from the image based on the adapted first model. A second model is selected for segmenting the object from a plurality of models for segmenting the object, based on the feature extracted from the image. The second model includes additional detail of the object. The second model is utilized based on the adapted first model and/or the feature extracted from the image; the initialized second model is adapted to the image. The features extracted from the image based on the adapted first model help the system () to select the second model for segmenting the object from a plurality of models for segmenting the object. The adapted first model and/or the extracted features are also used for initializing the second model. Because the second model includes the additional detail of the object, the segmentation result using the second model is more complete than the segmentation result Obtained using the first model. Moreover, the initialization of the second model based on the adapted first model and/or the detected features Improves the accuracy of the second model adaptation.

Choosing anatomical variant model for image segmentation

A system for displaying lung ventilation information, the system comprising an input () and a processing unit (). The input being provided for receiving multiple CT images () of a lung, each CT image () corresponding to one phase of at least two different phases in a respiratory cycle. The processing unit () being configured to compare CT images () corresponding to different phases in the respiratory cycle for determining a deformation vector field for each phase, to generate for each phase a ventilation image () based on the corresponding deformation vector field, to spatially align the ventilation images (), and to generate for at least one common position () in each one of the aligned ventilation images (), a function () of a time course of a ventilation value for said common position (), each ventilation value in the function () being based on the deformation vector fields corresponding to the aligned ventilation images ().

System for providing lung ventilation information

The present invention relates to an apparatus () for segmenting an object comprising sub-objects shown in an object image. The apparatus comprises a feature image generation unit () for generating a feature image showing features related to intermediate regions between the sub-objects and a segmentation unit () for segmenting the sub-objects by using the object image and the feature image. Preferentially, the feature image generation unit () is adapted for generating a feature image from the object image. In a further embodiment, the feature image generation unit () comprises a feature enhancing unit for enhancing features related to intermediate regions between the sub-objects in the object image.

Apparatus for segmenting an object comprising sub-objects

The invention relates to a system for adapting a plurality of model meshes to a plurality of image data. The system has a registration unit for registering the plurality of model meshes with the plurality of image data on the basis of a computation of a registration transformation for transforming the plurality of model meshes, and an adaptation unit for adapting the plurality of registered model meshes to the plurality of image data on the basis of a computation of locations of mesh vertices of the plurality of model meshes. The described system is capable of reducing motion artifacts in tomographic images computed from data acquired at a plurality of different cardiac cycle phases.

Reduction of heart motion artifacts in thoracic CT imaging

The invention relates to a method and a device for determining the distribution of an X-ray fluorescence (XRF) marker () in a body volume (). The body volume () is irradiated with a beam of rays () from an X-ray source () with a first ray component with a quantum energy just above and a second ray component with a quantum energy just below the K-edge of the XRF marker (). Secondary radiation emitted from the body volume () is detected in a location-resolved way by a detector (). To separate the X-ray fluorescence components in the secondary radiation from background radiation, the body volume is irradiated for a second time with a beam of rays from which the first ray component has been substantially removed by a filter () made from the material of the XRF marker.

Device and method for mapping the distribution of an X-ray fluorescence marker

The invention relates to a device for generating X-rays () comprising an electron source () for emitting electrons accommodated in a vacuum space (), a liquid metal circuit including a liquid metal for emitting X-rays as a result of the incidence of electrons and a pumping means () for causing a flow of the liquid metal through a constriction () where the electrons emitted by the electron source () impinge upon the liquid metal, and a radiation window () bounding said constriction (), which is transparent to electrons and X-rays and separates the constriction () from the vacuum space (). To provide a device for generating X-rays in which a cross-sectional area of the constriction substantially corresponds to an intended, desired cross-sectional area due to a self-regulating process without the need for external or additional components or electronics, it is proposed that said constriction () being bounded by a compensation window () opposite of said radiation window (), which separates the constriction () from a pressure chamber () containing liquid metal provided by said liquid metal circuit via a connection (), and which, during operation, has a profile (p') as a result of a deformation caused by a pressure in the pressure chamber () different from the pressure in the constriction () which substantially matches a profile (p) which the radiation window () has, during operation, as a result of a deformation of the radiation window () caused by a pressure of the liquid metal in the constriction ().

Device for generating X-rays having a liquid metal anode

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Dassendorf, Germany

Hans Barschdorf