Abstract:
The present invention relates to guiding an interventional device. In order to provide improved guidance when navigating by the aid of roadmapping, an apparatus (10) for guidance of an interventional device is provided. The apparatus comprises an input unit (12); a data storage unit (14), a data processing unit (16) and an output unit (18). The data storage unit is configured to provide a vasculature map of a region of interest with a vasculature presentation of a subject's vasculature structure. The input unit is configured to receive and transfer to the data processing unit at least one current image of the region of interest, wherein an interventional device is at least partly visible in the at least one current image when inserted within the vasculature structure in the region of interest. The data processing unit is configured to combine the vasculature map and the at least one current image, and to detect a location of at least one part of the interventional device in the vasculature map, and to detect if the at least one part of the interventional device lays outside the vasculature presentation shown in the vasculature map and to determine a branching-off location for the interventional device on the vasculature map, and also to adapt the vasculature map in the branching-off location providing an indication of the branching-off location. The output unit is configured to provide an adapted vasculature map.
Abstract:
An apparatus for determining a functional index for stenosis assessment of a vessel is provided. The apparatus comprises an input interface (40) and a processing unit (50). The input interface is configured to obtain image data (30) representing a two-dimensional representation of a vessel (6). The processing unit (50) is configured to determine a course of the vessel (6) and a width (w1, w2) of the vessel along its course in the image data and is further configured to determine the functional index for stenosis assessment of the vessel based on the width of the vessel in the image data.
Abstract:
Vasculature modeling systems and methods are disclosed that generate an enhanced 3D model based on a combination of two dimensional, 2D, imaging data of a region of interest and 3D imaging data of the region of interest. A hemodynamic simulation is performed using the enhanced 3D model to derive at least one hemodynamic parameter based on the hemodynamic simulation.
Abstract:
The present invention relates to an apparatus for providing a patient specific 3D model of a body part. It is described to provide (210) at least one 2D X-ray image comprising 2D X-ray image data of a vascular structure of a patient's body part. A 3D model of the body part is provided (220), the 3D model comprising a 3D modelled vascular structure, wherein at least one parameter commands an appearance of the 3D modelled vascular structure. The 3D modelled vascular structure is confronted (230) with the 2D X-ray image data of the vascular structure to determine the at least one parameter. The 3D model is updated (240) as a function of the determined at least one parameter. A medical report is generated (250) based on information determined from the 3D model.
Abstract:
The invention relates to a navigation assistance system for assisting in navigating an interventional instrument within a subject. An implanted object opening model (21) and a vessel opening model (27) are generated based on a provided interventional image data set, wherein the models define a respective position, shape and dimension in a frame of reference. These models and a position, which is also provided in the frame of reference, and optionally also a shape (25) of the interventional instrument are used for generating a graphical representation showing the implanted object opening model, the vessel opening model and the provided position and optionally shape of the interventional instrument, thereby providing guidance for a physician, which allows the physician to relatively easily navigate the interventional instrument such that it is moved through the opening of the implanted object and through the opening of the vessel.
Abstract:
The present invention relates to a guidance for treatment of a chronic total occlusion. In order to provide improved guidance information for chronic total occlusion treatment, a device (10) for guidance for treatment of a chronic total occlusion is provided that comprises an image supply (12), a data processor (14) and an output (16). The image supply provides a sequence of angiographic images comprising a vascular structure. The data processor detects at least one portion of the vascular structure indicating a total occlusion of a vessel based on the sequence of angiographic images; and determines an image of the sequence of images that shows at least one segment of the vessel next to the total occlusion; and generates guidance image data based on the determined image. The output provides the generated guidance image data. Thus, additional information relating to spatial aspects is provided to the user based on 2D image data.
Abstract:
According to some implementations, a n medical interventional imaging device for monitoring an interventional procedure is described. The medical interventional imaging device includes a temporary data buffer configured to temporarily store medical interventional fluoroscopic image data, a signal processor configured to detect if an abnormal state occurs during an intervention and to record an instant at which the abnormal state has occurred, and a permanent data storage configured to permanently store at least a part of the medical interventional fluoroscopic image data stored temporarily before and/or at the recorded instant if the abnormal state is detected.
Abstract:
The present invention relates to a device (1) for fractional flow reserve determination. The device (1) comprises a model generator (10) configured to generate a three-dimensional model (3DM) of a portion of an imaged vascular vessel tree (VVT) surrounding a stenosed vessel segment (SVS), based on a partial segmentation of the imaged vascular vessel tree (VVT). Further, the device comprises an image processor (20) configured to calculate a blood flow (Q) through the stenosed vessel segment (SVS) based on an analysis of a time-series of X-ray images of the vascular vessel tree (VVT). Still further, the device comprises a fractional-flow-reserve determiner (30) configured to determine a fractional flow reserve (FFR) based on the three-dimensional model (3DM) and the calculated blood flow.
Abstract:
The present invention relates to localization of a vascular treatment and quantification of a part of a vascular structure. It is described to provide (12) at least one first image comprising a representation of a region of interest of a vascular structure. At least one second image comprising a representation of the region of interest of the vascular structure is provided (14). Between an acquisition of the at least one first image and an acquisition of the at least one second image, a vascular treatment might have been applied to the region of interest of the vascular structure, wherein the representation of the region of interest of the vascular structure relates to spatial extension information of the vascular structure at least in one image plane. At least one reference image from an image set formed from the at least one first image and the at least one second image is selected (16). At least one sample image from the image set formed from the at least one first image and the at least one second image is selected (18), wherein the at least one sample image is different to the at least one reference image. At least one image from the at least one sample image is registered (20) with the at least one reference image to provide at least one registered image. It is determined (22) if there exists at least one region of spatial discrepancy between the representation of the region of interest in the at least one reference image and the representation of the region of interest in the at least one registered image. Data is output (24) representative of the at least one region of spatial discrepancy.
Abstract:
An apparatus for visualizing image material in a multimodal imaging environment. Images (XF, USV) from an X-ray imager (100) and an ultrasound probe (USP) are fused into an interactive graphics display (GUI) to form a 3D scene, where, alongside to a 3D rendering (USS) of an ultrasound volume (USV) an X-Ray projection plan (XF) is displayed in perspective within the same scene. The rendering is according to a user selected view (UV) which is changeable upon user interaction with the interactive graphics display (GUI).