Patent application number | Description | Published |
20080199097 | Multi-Feature Time Filtering for Enhancing Structures in Noisy Images - A method for enhancing objects of interest represented on a moving background in a sequence of noisy images, and for displaying the sequence of enhanced images, the method comprising the steps of acquiring the sequence of images, extracting features related to an object of interest on a background in images from the sequence of acquired images or processed images, said features comprising at least two separately identified parts, registering separately each identified part with respect to an image from the sequence of acquired images, while not registering the background around said identified parts, to generate registered images of said identified parts, assembling together all registered identified parts from said object of interest using a weighted combination of said registered identified parts, to generate assembled images, integrating both said object of interest and said background over at least one assembled image and one acquired image, and displaying the processed images of the enhanced object of interest on faded background. | 08-21-2008 |
20080234570 | System For Guiding a Medical Instrument in a Patient Body - The present invention relates to a medical system comprising a medical instrument to be guided in a patient body, ultrasound acquisition means using an ultrasound probe for acquiring a 3D ultrasound data set and X-ray acquisition means for acquiring a 2D X-Ray image, which comprises a projection of said medical instrument. The system in accordance with the invention further comprises means for localizing said ultrasound probe within a referential of said X-Ray acquisition means, means for providing a first localization of said medical instrument within a referential of the ultrasound acquisition means, means for converting said first ultrasound localization into a first X-Ray localization within the referential of said X-Ray acquisition means, means for providing a second X-Ray localization of the projection of said medical instrument in the two-dimensional X-ray image, means for mapping said 3D ultrasound data set with said 2D X-ray image in accordance with a transformation, which minimizes a distance between a projection of said first X-Ray localization on said 2D X-Ray image and said second X-Ray localization and means for generating and displaying a bi-modal representation of said medical instrument, in which said 2D X-ray image and said mapped 3D ultrasound data are combined. | 09-25-2008 |
20080279476 | METHOD FOR PRODUCING AN IMAGE AND SYSTEM FOR PRODUCING AN IMAGE - According to an exemplary embodiment a method for producing an image of a physical object comprises receiving a plurality of raw images, dividing the plurality of raw images into a first subset of primary images and a second subset of secondary images according to a predetermined criterion. From the first subset of primary images an intermediate image is determined while from the second subset of secondary images a mask image is determined. Afterwards a registration of the intermediate image and the mask image is performed by using direct registration of predetermined features present in the intermediate image and the mask image and fused image of the physical object is generated out of the mask image and the intermediate image. | 11-13-2008 |
20080285880 | Method of Filtering Bending Features - The present invention relates to a method of filtering an input image using a target oriented filter pattern, which has been obtained by warping a source oriented filter pattern. Such a method comprises a step of computing a source oriented filter pattern at a central image point of said input image, said source oriented filter pattern comprising a source central line, a step of analyzing intensity levels of image points in the vicinity of the central image point for determining a target central line and a step of computing a target oriented filter pattern at the central image point from said target central line and said source oriented filter pattern by defining transformation rules between points of the source and points of the target oriented filter patterns. The method in accordance with the invention finally comprises a step of computing a target oriented filter from said target oriented filter pattern and of applying said target oriented filter to said input image for producing an output image. | 11-20-2008 |
20080317370 | Method and System for Filtering Elongated Features - The present invention relates to a method of filtering an input image for producing an output image. The method comprising the steps of, for a first image point located at first spatial coordinates:—analysing intensity levels of the input image in a first vicinity of the first image point for calculating a first direction of filtering at said first image point;—computing an intensity level of a first output image point of a first output image by applying a first steerable filter kernel to the input image, which is centered at the first image point and oriented along the calculated first direction of filtering; selecting at least a second image point in a second vicinity of said first image point in the first output image;—computing an intensity level of at least one second output image point of a second output image by applying at least a second steerable filter kernel to the input image, which is centered at the at least second image point and oriented along a second direction of filtering;—calculating a linear combination of the first output image point and of the at least second output image point for providing an output intensity level;—applying said output intensity level to an output image point of said output image, said output image point having said first spatial coordinates. | 12-25-2008 |
20090216111 | PROCESSING OF IMAGES OF INTERVENTIONAL INSTRUMENTS WITH MARKERS - The invention relates to a method and an image processing system ( | 08-27-2009 |
20100063389 | METHOD AND DEVICE FOR RECORDING A VASCULAR STRUTURE DURING INTERVENTION - Method and device for recording a vascular structure during intervention comprises steps or elements for detecting S | 03-11-2010 |
20100145193 | PHASE-FREE CARDIAC ROADMAPPING - According to an exemplary embodiment of the present invention, a cardiac roadmapping technique is provided, that does not rely on the prerequisite of a phase-centric pairing of the angiogram and life images. Instead, both the pairing and accurate registration of the images are combined within a single operation, for example by using a multi-device map. This may provide for robust and precise cardiac roadmapping. | 06-10-2010 |
20100209012 | METHOD OF ENHANCEMENT OF MOVING STRUCTURE USING DOUBLE-WARPING - A method for enhancing a moving structure of interest in a sequence of images is described, wherein images of the sequence are captured at different times and defined by a matrix of discrete pixels. The method comprises the steps of warping the data representative of pixels defining the images I(t) by using the data representative of the displacements V(t→to) to obtain data representative of pixels defining a second sequence of images A (t), applying an enhancement operation to images of the second sequence A (t) to obtain data representative of pixels defining a third sequence of images B(t), selecting data representative if pixels defining one image B(s) from the third sequence of images B(t), generating data representative of a reverse displacement V(to→O for pixels of the selected structure of interest between the image I(to) captured at reference time to and each image I(t) of the sequence of images captured at time t, and warping of the image B(s) using the data representative of the reverse displacement V(to→t) to obtain data representative of pixels defining a fourth sequence of images E(t). | 08-19-2010 |
20110135064 | DYNAMICAL VISUALIZATION OF CORONARY VESSELS AND MYOCARDIAL PERFUSION INFORMATION - A method for dynamically visualizing coronary information and an apparatus adapted to implement such method is described. In a preferred embodiment of the method, first dynamic cardiac data is acquired during a first cardiac stage and second dynamic cardiac data is acquired during a second cardiac stage. Then, the two data sets are visualized continuously the in a superimposed presentation, wherein the first cardiac data and the second cardiac data corresponding to a same phase within the cardiac cycle are visualized simultaneously. In this way for example information about the vessel geometry may be immediately linked with information about the muscle irrigation or perfusion. Furthermore, this useful information may be displayed in a high-contrasted and low-noise presentation. | 06-09-2011 |
20110216092 | COMBINED DEVICE-AND-ANATOMY BOOSTING - An apparatus and a method is proposed, for visualization of an object of interest together with a device being inside the object of interest. The apparatus comprises an image formation unit adapted for providing image information of the object of interest and the device, a processing unit and a display adapted for displaying the image, wherein the image is a combination of the image information of the device and the boosted image information of the object of interest. Here, the processing unit is adapted for performing the following steps: detecting and segmenting the device on the basis of image information provided by the image formation unit; wiping-out the image information of the device; detecting the object of interest on the basis of the provided image information; boosting the image information of the object of interest; re-inserting the image information of the device. | 09-08-2011 |
20110249794 | AUTOMATIC ROAD MAPPING FOR HEART VALVE REPLACEMENT - The present invention relates to a method for automatic road mapping for heart valve replacement and an examination apparatus for automatic road mapping for heart valve replacement. In order to provide the cardiologist or surgeon with better information during PHV implantation, an examination apparatus for automatic roadmapping for heart valve replacement is provided, that comprises at least one X-ray image acquisition device ( | 10-13-2011 |
20110305322 | MEDICAL VIEWING SYSTEM FOR DISPLAYING A REGION OF INTEREST ON MEDICAL IMAGES - A medical viewing system with an X-ray image acquisition device for acquiring angiograms and interventional live images of vessels is adapted for generating a region of interest border into which an object referenced by an object-based registration process must extend in order to achieve an accurate registration of vessel trees extracted from the angiogram and the live images. The region of interest border is then overlaid onto the vessel tree images and the live images. The medical viewing system reminds the person accomplishing the intervention of the importance of pushing the object far enough into the image, while being discrete enough to be ignored if preferred, thus yielding in a reliable and precise road mapping processing. | 12-15-2011 |
20110305378 | MASK CONSTRUCTION FOR CARDIAC SUBTRACTION - To provide an improved method for achieving DSA images where the effect of residual motions in cardiac DSA during the perfusion phase is reduced and in order to display subtracted images containing less motion artefacts, a method of performing digital subtraction angiography DSA in an imaging apparatus comprises the steps of generating a first image sequence of mask images ( | 12-15-2011 |
20110317881 | FLOW SOUND IN X-RAY EXAMINATION - The invention relates to the representation of blood flow-related information using an X-ray image acquisition device. In order to provide an improved method in an X-ray imaging system for representing the blood flow, for vessel analysis purposes for example, a device and a method are provided where X-ray images are used to determine the spatial distribution of blood velocity. Using this information it is possible to artificially synthesize a sound defined by the visual spectrum determined by the velocity distribution. Providing sound information based on X-ray imaging technique allows cardiologists and neurologists, for example, an enhanced way of evaluating vascular lesions and a better control on quality of resulting blood flow. | 12-29-2011 |
20120082360 | DEVICE SIZING SUPPORT DURING INTERVENTIONS - The invention relates to a method and an apparatus for providing device sizing support, the method comprising obtaining an X-ray image of a vessel, introducing a guide wire having a radiopaque wire tip into the vessel, obtaining an X-ray image of the wire tip, segmenting the wire tip when it passes through the vessel, and providing sizing information relating to the size of the vessel based on the size of the wire tip. The imaging system according to the invention includes means providing functionality for performing the method according to the invention. | 04-05-2012 |
20120093379 | DETECTING AND DARKENING METHOD OF OBJECTS IN GREY-ACALE RASTER IMAGES - Wire tips and balloon/stent markers are the main landmarks used by cardiologists for navigation and precise stent placement under X-Ray fluoroscopy surveillance. These intra-coronary devices are semi radio-opaque. In some situations, their visibility can be extremely low. The claimed may help the cardiologists by detecting the objects and darkening them on the live X-Ray image to increase their visibility. The darkening processing takes into account the image properties around the objects or detection information in order to obtain a better contrast enhancement. This technique also avoids the introduction of disturbing artefacts when the object detection fails. | 04-19-2012 |
20120148135 | GENERATING OBJECT DATA - The invention relates to the generation of a 3D vessel model of a region of interest of an object. The invention relates particularly to a medical imaging system and a method for generating a 3D vessel model of a region of interest of an object and to a computer program element as well as a computer readable medium for generating a 3D vessel model of a region of interest of an object. In order to facilitate and improve the generation of a 3D vessel model of a region of interest of an object, a medical imaging system and a method with the following steps is provided: Acquiring at least two 2D X-ray projection images of contrast enhanced vascular structures from different viewing angles; determining a probability map for predetermined vessel features for each of the 2D X-ray projection images; displaying the probability map for each of the 2D X-ray projection images for interaction purposes; segmenting vessels of interest by indicating the location of a first set of points of interest in the probability map of one of the at least two 2D X-ray projection images by interaction of the user, determining and displaying epipolar lines for the first set of points of interest in the probability map of the other one of the at least two 2D X-ray projection images, indicating the location of a second set of points of interest in the probability map of the other one of the at least two 2D X-ray projection images by the user, wherein the epipolar lines act as orientation and wherein the second set of points is corresponding to the indicated first points, determining the closest relevant predetermined features of the vascular structure upon the indication of the location of points of interest and extracting 2D centrelines, bifurcation points and/or vessel borders of the vascular structure from the determined features of the vascular structure; and calculating a 3D vessel model from the extracted 2D vessel centrelines, bifurcation points and/or vessel borders. | 06-14-2012 |
20120177277 | LIVE REGISTRATION FOR VESSEL TREATMENT - The present invention relates to accurate positioning for vessel intervention procedures, particularly to a method for accurate positioning for vessel intervention procedures, a medical imaging system for accurate positioning for vessel intervention procedures and a catheterization laboratory system for accurate positioning for vessel intervention procedures. First, at least one X-ray image of a vessel region of interest is acquired ( | 07-12-2012 |
20120183189 | VASCULAR ROADMAPPING - Cardiac roadmapping consists in correctly overlaying a vessel map sequence derived from an angiogram acquisition onto a fluoroscopy sequence used during PTCA intervention. This enhanced fluoroscopy sequence however suffers from several drawbacks such as breathing motion, high noise level, and most of all suboptimal contrast-enhanced mask due to segmentation defaults. This invention proposes to reverse the process and to locally overlay the intervention device as seen in fluoroscopy onto an optimal contrast-enhanced image of a corresponding cycle. This drastically reduces or suppresses the breathing motion, it provides the high image quality standard of angiograms, and avoids segmentation defaults. This proposal could lead to a brand new navigation practice in PCI procedures. | 07-19-2012 |
20120190972 | DEPTH DISAMBIGUATION OF INTERVENTIONAL INSTRUMENTS FROM A SINGLE X-RAY PROJECTION IMAGE AND ITS CALIBRATION - X-ray images are projective, meaning that the 3D geometry is flattened along projection lines going from the source to the detector. In particular procedures, such as mapping or ablation, the interventional instrument lies on the wall of the organ. Using a 3D segmentation of this organ registered to the x-ray, the instrument necessarily lies on the intersection of this surface with its projection line. The line and the surface typically intersect with a segmentation surface at a discrete number of points (typically 2 for shapes such as the anterior of the LA). One then has just to disambiguate between these different possible locations to determine the exact location of the instrument. In this invention, we propose to use the apparent width of the instrument measured in x-ray images to accomplish this task. | 07-26-2012 |
20120245458 | COMBINATION OF ULTRASOUND AND X-RAY SYSTEMS - The invention proposes to detect and track an intervention device in a 2D fluoroscopy image and to steer an ultrasound probe beam towards this device. Therefore, a method and corresponding system is proposed, by which an ultrasound probe is registered in a fluoroscopy image, wherein the registering includes the estimation of the position and of the orientation of the probe relative to the fluoroscopy. | 09-27-2012 |
20130011041 | SYSTEM AND METHOD FOR PRODUCING AN IMAGE OF A PHYSICAL OBJECT - The invention relates to a system and a method for producing an image of a physical object and to a computer program element and a computer readable medium. In order to provide improved stent boost subtract also showing wire state information, a system and a method are provided, the method comprising the following steps: a) tracking a predetermined first feature ( | 01-10-2013 |
20130023759 | AUTOMATED IDENTIFICATION OF AN ANATOMY PART - The present invention relates to a device | 01-24-2013 |
20130028384 | AUTOMATIC POSITIONING OF ABSORPTION MEANS IN X-RAY IMAGE ACQUISITION - The present invention relates to automatic absorption means positioning in X-ray image acquisition. To improve image quality and to optimize the radiation exposure of an object, optimal position for X-ray absorption means is provided. A first sequence ( | 01-31-2013 |
20130101196 | NAVIGATING AN INTERVENTIONAL DEVICE - The present invention relates to navigating an interventional device. In particular, the invention relates to a system for navigating an interventional device within a tubular structure of an object, a method for navigating an interventional device within a tubular structure of an object as well as a computer program element and a computer-readable medium. In order to provide enhanced information to the user in an easily comprehensible manner while keeping the X-ray dose to a minimum, a system and a method for navigating an interventional device within a tubular structure of an object are provided, wherein the method comprised the following steps: a) Acquiring 2D X-ray fluoroscopy image data in one projection geometry of a region of interest of the tubular structure; b) detecting the interventional device in the 2D X-ray image; c) determining the 2D position of the interventional device in the 2D X-ray image; d) registering the at least one 2D X-ray image with a previously acquired 3D dataset of the region of interest of the tubular structure; e) mapping the determined 2D position of the interventional device to a position in the 3D dataset; f) extracting local 3D parameters of the tubular structure at the position of the interventional device; g) generating navigational information on behalf of the determined 3D position of the interventional device and the extracted local 3D parameters; and h) providing the navigational information to the user. | 04-25-2013 |
20130308844 | MEDICAL IMAGING DEVICE FOR PROVIDING AN IMAGE REPRESENTATION SUPPORTING THE ACCURATE POSITIONING OF AN INVENTION DEVICE IN VESSEL INTERVENTION PROCEDURES - A medical imaging device and a method for providing an image representation supporting inaccurate positioning of an intervention device in a vessel intervention procedure is proposed. Therein, an anatomy representation (AR) of a vessel region of interest and at least one angiogram X-ray image (RA) and a live fluoroscopy X-ray image (LI) are acquired. The following steps are performed when a radio-opaque device is fixedly arranged within the vessel region of interest: (a) registering the anatomy representation to the at least one angiogram X-ray image in order to provide an anatomy-angiogram-registration (R | 11-21-2013 |
20130343631 | MEDICAL IMAGING DEVICE FOR PROVIDING AN IMAGE REPRESENTATION SUPPORTING IN POSITIONING AN INTERVENTION DEVICE - A medical imaging device and a method for providing an image representation supporting positioning of an intervention device such as a wire tip ( | 12-26-2013 |
20140005538 | DYNAMIC NORMALIZATION OF DATA FOR PERFUSION COMPARISON AD QUANTIFICATION | 01-02-2014 |
20140031676 | EMBEDDED 3D MODELLING - The present invention relates to an image processing device for guidance support, a medical imaging system for providing guidance support, a method for guidance support, a method for operating an image processing device for guidance support, as well as a computer program element, and a computer readable medium. In order to provide enhanced and easily perceptible information about the actual situation, it is proposed to provide ( | 01-30-2014 |
20140050304 | MEDICAL IMAGING DEVICE WITH SEPARATE BUTTON FOR SELECTING CANDIDATE SEGMENTATION - A medical imaging device ( | 02-20-2014 |
20140204124 | VASCULAR TREATMENT OUTCOME VISUALIZATION - The present invention relates to vascular treatment outcome visualization. To provide an enhanced possibility to check that a vascular treatment has been correctly performed, it is proposed to provide ( | 07-24-2014 |
20140219537 | VASCULAR OUTLINING WITH OSTIA VISUALIZATION - An apparatus and a related method of processing a 2D projection image ( | 08-07-2014 |
20140294152 | PAIRING OF AN ANATOMY REPRESENTATION WITH LIVE IMAGES - The present invention relates to pairing an anatomy representation with live images. In order to provide an enhanced and more flexible pairing of an anatomy representation with live images, for pairing an anatomy representation with live images, reference projected-anatomy image data of a device in a spatial relation to the anatomy is provided ( | 10-02-2014 |
20140348296 | X-RAY IMAGING GUIDING SYSTEM FOR POSITIONING A PATIENT - The present invention relates to guiding in positioning a region of interest of a patient for X-ray image acquisition. In order to improve and facilitate positioning of a patient for X-ray image acquisitions, an X-ray imaging guiding system ( | 11-27-2014 |
20140371578 | REAL-TIME DISPLAY OF VASCULATURE VIEWS FOR OPTIMAL DEVICE NAVIGATION - An apparatus configured to generate for display a plurality of vasculature ( | 12-18-2014 |