Abstract: A medical image processing apparatus comprises processing circuitry configured to: receive medical image data that comprises or is obtained from scan data representing an anatomical region in which a sub-region is enhanced; predict, using a trained model, mask data from the medical imaging data, wherein the mask data is representative of the anatomical region without enhancement of the sub-region; and predict, using the trained model or a further trained model, subtraction data from the same medical image data, wherein the subtraction data is representative of the same anatomical region; wherein the processing circuitry is further configured to apply at least one constraint to obtain constrained subtraction data.

Abstract: A medical image processing apparatus comprises processing circuitry configured to: obtain a three-dimensional (3D) image that is representative of an anatomical region of a subject; acquire a stream of two-dimensional images that are representative of the anatomical region of the subject; set a first rendering direction by performing a 2D/3D registration procedure in respect of the 3D image and a 2D image of the stream of 2D images; generate a first rendered image from the 3D image based on the first rendering direction; and for each of a plurality of subsequent 2D images of the stream of 2D images, determine whether a condition is satisfied, the condition being dependent on at least one of a 2D misalignment and a time since last 2D/3D registration procedure; when the registration condition is satisfied, select one of the subsequent 2D images; reset the rendering direction to obtain a second rendering direction by performing a 2D/3D registration procedure in respect of the 3D image and the selected 2D image;

Abstract: A navigation apparatus for assisting navigation of a device through tissue comprises processing circuitry configured to receive volumetric medical imaging data representative of an anatomical region, the anatomical region comprising a region of tissue to be traversed by a device; process the volumetric medical imaging data to identify different types of tissue in the region of tissue; determine a position of the device; and process the volumetric medical imaging data to obtain a virtual endoscopic view of at least part of the region of tissue, the virtual endoscopic view comprising a virtual representation of the device in its determined position; wherein the virtual endoscopic view is rendered such as to visually distinguish the identified different types of tissue, thereby assisting navigation of the device through the region of tissue.

Abstract: A medical image processing apparatus comprises processing circuitry configured to: obtain a three-dimensional (3D) image that is representative of an anatomical region of a subject; acquire a stream of two-dimensional images that are representative of the anatomical region of the subject; set a first rendering direction by performing a 2D/3D registration procedure in respect of the 3D image and a 2D image of the stream of 2D images; generate a first rendered image from the 3D image based on the first rendering direction; and for each of a plurality of subsequent 2D images of the stream of 2D images, determine whether a condition is satisfied, the condition being dependent on at least one of a 2D misalignment and a time since last 2D/3D registration procedure; when the registration condition is satisfied, select one of the subsequent 2D images; reset the rendering direction to obtain a second rendering direction by performing a 2D/3D registration procedure in respect of the 3D image and the selected 2D image;

Abstract: An imaging data processing apparatus comprises a registration unit configured to obtain a hierarchical registration between a reference data set and volumetric medical imaging data, the reference data set comprising a plurality of anatomical structures, wherein the hierarchical registration comprises an initial registration and at least one further registration, and the at least one further registration is obtained by the registration unit by modifying the initial registration, and a segmentation unit for segmenting at least part of the volumetric medical imaging data in dependence on the hierarchical registration. The initial registration comprises a registration between at least part of the reference data set and at least part of the volumetric medical imaging data, the at least part of the reference data set comprising a first anatomical structure or first group of anatomical structures.

Abstract: A navigation apparatus for assisting navigation of a device through tissue comprises processing circuitry configured to receive volumetric medical imaging data representative of an anatomical region, the anatomical region comprising a region of tissue to be traversed by a device; process the volumetric medical imaging data to identify different types of tissue in the region of tissue; determine a position of the device; and process the volumetric medical imaging data to obtain a virtual endoscopic view of at least part of the region of tissue, the virtual endoscopic view comprising a virtual representation of the device in its determined position; wherein the virtual endoscopic view is rendered such as to visually distinguish the identified different types of tissue, thereby assisting navigation of the device through the region of tissue.

Abstract: A medical image data processing apparatus comprises a registration unit configured to perform a non-rigid registration of a first set of medical image data and a second set of medical image data thereby to determine a deformation field, and a region identification unit configured to identify at least one region for which the deformation field is approximately homogeneous, and, for at least part of at least one identified region, to obtain a substantially homogeneous approximation of the deformation field.

Abstract: A medical image processing apparatus according to one embodiment includes obtaining circuitry, calculating circuitry, and transforming circuitry. The obtaining circuitry takes an expiration time phase or an inspiration time phase as a benchmark time phase and obtains a benchmark line structure, which is a line structure of a bronchus in a lung field, from a medical image at the benchmark time phase. The calculating circuitry calculates a motion amount between a component depicted in the medical image at the benchmark time phase and a component depicted in a medical image at at least one other time phase than the benchmark time phase. The transforming circuitry transforms the benchmark line structure based on the motion amount to obtain an estimated line structure, which is estimated as a line structure at the at least one other time phase.

Abstract: A medical imaging data processing apparatus comprises a setting circuitry configured to set a plurality of seeds at different locations in medical image data, a processing circuitry configured to select at least one seed from among the plurality of seeds and expand the at least one selected seed, and a region identifying circuitry configured to identify at least one target region based on a result of the expansion.

Abstract: An image data processing apparatus comprises a data receiving unit for receiving medical image data representative of a region of a subject, wherein the medical image data comprises for each of a plurality of points in the region of the subject a first intensity value and a second intensity value, each point having a respective position on an at least two-dimensional distribution of first intensity against second intensity, and wherein for each point at least one of the first intensity value and the second intensity value is obtained from a contrast-enhanced scan of the region of the subject; and a processing unit for rendering or segmenting the medical image data in dependence on the positions of points in the at least two-dimensional distribution.

Abstract: A medical image processing apparatus for receiving a target phase data set and a reference phase data set at different times, obtaining a segmentation of an elongated structure in the target phase data and the reference phase data set, determining a target phase line along the segmentation of the elongated structure in the target phase data set and a reference phase line along the segmentation of the elongated structure in the reference phase data set, and determining a synthesized target phase line by combining the target phase line and reference phase line.

Abstract: An apparatus for visualizing medical image data comprises a data processing unit for obtaining first image data representing a first medical image, second image data representing a second medical image, and subtraction image data representing a subtraction image, wherein the subtraction image data is generated by subtracting one of the first medical image data and the second medical image data from the other of the first medical image data and the second medical image data, and the apparatus further comprises a feature identification unit for processing the first image data representing the first medical image to identify a feature, and a rendering unit for rendering a combined image comprising an overlay of the identified feature from the first medical image data and one of the subtraction image and the second medical image.

Abstract: Apparatus for performing an imaging procedure comprising processing volumetric image data comprising an image processing unit configured to obtain first image data representative of a region including at least one vessel and at least one associated feature, and second image data representative of at least part of the region, an image refinement unit configured to process the first image data and the second image data to produce a combined image representative of the at least one vessel, wherein the associated feature is removed or reduced in intensity in the combined image, and a rendering unit configured to render the combined image as a simulated view that simulates a view obtainable from an alternative imaging procedure.

Abstract: A medical imaging data processing apparatus comprises a setting circuitry configured to set a plurality of seeds at different locations in medical image data, a processing circuitry configured to select at least one seed from among the plurality of seeds and expand the at least one selected seed, and a region identifying circuitry configured to identify at least one target region based on a result of the expansion.

Abstract: A medical image processing apparatus according to one embodiment includes obtaining circuitry, calculating circuitry, and transforming circuitry. The obtaining circuitry takes an expiration time phase or an inspiration time phase as a benchmark time phase and obtains a benchmark line structure, which is a line structure of a bronchus in a lung field, from a medical image at the benchmark time phase. The calculating circuitry calculates a motion amount between a component depicted in the medical image at the benchmark time phase and a component depicted in a medical image at at least one other time phase than the benchmark time phase. The transforming circuitry transforms the benchmark line structure based on the motion amount to obtain an estimated line structure, which is estimated as a line structure at the at least one other time phase.

Abstract: An apparatus for providing a motion-corrected time series of image data sets, comprises an image selection unit for obtaining a series of sets of image data, each set of image data representative of a region at a different time, and for automatically determining a sub-region of interest, and a registration unit that is configured to, for each of a plurality of sets of image data in the series, perform a registration, for the sub-region of interest, to register one of a reference data set of the series and the set of image data to the other of that reference data set and the set of image data.

Abstract: An image data processing apparatus comprises a data receiving unit for receiving medical image data representative of a region of a subject, wherein the medical image data comprises for each of a plurality of points in the region of the subject a first intensity value and a second intensity value, each point having a respective position on an at least two-dimensional distribution of first intensity against second intensity, and wherein for each point at least one of the first intensity value and the second intensity value is obtained from a contrast-enhanced scan of the region of the subject; and a processing unit for rendering or segmenting the medical image data in dependence on the positions of points in the at least two-dimensional distribution.

Abstract: An imaging data processing apparatus comprises a registration unit configured to obtain a hierarchical registration between a reference data set and volumetric medical imaging data, the reference data set comprising a plurality of anatomical structures, wherein the hierarchical registration comprises an initial registration and at least one further registration, and the at least one further registration is obtained by the registration unit by modifying the initial registration, and a segmentation unit for segmenting at least part of the volumetric medical imaging data in dependence on the hierarchical registration. The initial registration comprises a registration between at least part of the reference data set and at least part of the volumetric medical imaging data, the at least part of the reference data set comprising a first anatomical structure or first group of anatomical structures.

Abstract: A medical image processing apparatus for receiving a target phase data set and a reference phase data set at different times, obtaining a segmentation of an elongated structure in the target phase data and the reference phase data set, determining a target phase line along the segmentation of the elongated structure in the target phase data set and a reference phase line along the segmentation of the elongated structure in the reference phase data set, and determining a synthesized target phase line by combining the target phase line and reference phase line.

Abstract: An apparatus for segmentation of medical image data comprises a data processing unit for obtaining a first set of image data and a second set of image data, wherein a structure is represented in both the first set of image data and the second set of image data, a classification unit configured to determine a classification of a first type of feature from the first set of image data and to determine a classification of a second type of feature from the second set of image data, and a segmentation unit configured to identify image data representing the structure in dependence on both the classification of the first type of feature from the first set of image data and the classification of the second type of feature from the second set of image data.