Patent application number | Description | Published |
20080234575 | Method and device for making correction information available - The invention relates to a method and a device for making correction information for correcting a guidance direction of an instrument. Based on a current position of the tip of the instrument and the current guidance direction of the instrument and the position of a target point in an object, a first straight line indicating the current guidance direction and a second straight line defined by the tip of the instrument and the target point in the object are determined. The second straight line intersects the first straight line and indicates the desired guidance direction. Based on the position of the first and second straight lines relative to one another, a digital item of correction information is specified, wherein the correction image has a correction diagram located in a plane in the perspective of the current guidance direction of the instrument. | 09-25-2008 |
20080240361 | Registering device for registering an object by x-rays as a funtion of a body signal and associated method - The invention relates to a registering device for registering an object in at least two dimensions featuring an x-ray transmitter and a detector for the x-rays arranged in a registering plane. The registering device also features a positioning device connected to the detector and the transmitter in such a way that the detector can register x-rays which are transmitted through the object onto the registering plane in differing spatial orientations of the projection axis. The registering device comprises an image reproduction unit to reproduce the data set and an input for a body signal representing an organ movement of the object. The registering device associatively moves the x-ray transmitter or the detector as a function of the body signal so that the projection axis follows the organ movement. | 10-02-2008 |
20080242971 | Image system for supporting the navigation of interventional tools - The invention relates to an image system and a method for supporting the navigation of interventional tools when performing imaging controlled minimally invasive interventions within the body of a patient in a predetermined intervention plane, which serves to improve the precision and reliability of interventional accesses that are required for performing a histological tissue sample removal under CT or MRT based image-oriented monitoring, or in the context of tumor therapy or pain therapy. Directional deviations, away from the intervention plane, of the actual course of an interventional tool from a predeterminable desired course are captured and presented for display by registering the shortened represented total length or a shortened represented partial length of this interventional tool in the 2D projection representation of a fluoroscopic radioscopy recording that was recorded in a 2D projection direction running normally relative to the intervention plane. | 10-02-2008 |
20090015669 | Method for controlling the movement of a mobile part of an x-ray recording system, and an x-ray recording system coupled to video cameras - With an x-ray imaging system with a moveable part, obstacles can stand in the way of the movement of the moveable part. In accordance with the invention, video cameras capture the occupation of the space by objects using volume elements. It is possible to determine at a target movement of the moveable part which volume elements are passed through during this. If one of these volume elements proves to be a volume element occupied by an object, the movement of the moveable part is prevented, otherwise it is enabled or actively implemented. | 01-15-2009 |
20090028290 | Biplane X-ray system - In a biplane X-ray system, a robot is used for moving at least a pair comprising an X-ray radiation source and an X-ray detector. The robot can be a buckling arm robot bearing an X-ray C-arm. It is also possible for the X-ray radiation source and X-ray detector each to be suspended from the ceiling of the room by means of robot arms. | 01-29-2009 |
20090060313 | Method for reducing image noise in the context of capturing an image using on different radiation spectra - The invention relates to a method for reducing image noise in the context of capturing at least one radiation-based image of a region of interest using two different radiation spectra, in particular two different x-ray radiation spectra, comprising the following steps: capturing raw images of the region of interest using the two different radiation spectra with in each case mutually paired measured values; and to separate different materials in the region of interest, applying to the captured raw images at least one inversion operator with integrated noise filtering, said operator describing a transition from a measured value pair to an assigned reconstruction value pair. | 03-05-2009 |
20090088628 | EFFICIENT WORKFLOW FOR AFIB TREATMENT IN THE EP LAB - A system and method relate to enhanced medical workflows. Current anatomical data of a patient may be acquired, such as via a computed tomography or magnetic resonance procedure, just before and/or during an intervention. During the intervention, an electroanatomical map of the patient may be generated. The electroanatomical map may be generated from three-dimensional ultrasound data acquired via a medical device. The current anatomical data and electroanatomical map may be dynamically fused during the intervention. The fused data may be displayed and/or used to localize a current position of the medical device in real-time. The medical device may be a catheter employing a multi-dimensional forward-looking array of sensors. In one aspect, the enhanced workflow may be associated with an ablation procedure or other intervention performed in an electrophysiology lab. The use of current anatomical data and more accurate multi-dimensional ultrasound data may alleviate inefficiencies and inaccuracies associated with conventional interventions. | 04-02-2009 |
20090088830 | SYSTEM AND METHOD FOR INTRAOPERATIVE GUIDANCE OF STENT PLACEMENT DURING ENDOVASCULAR INTERVENTIONS - A method for guiding stent deployment during an endovascular procedure includes providing a virtual stent model of a real stent that specifies a length, diameter, shape, and placement of the real stent. The method further includes projecting the virtual stent model onto a 2-dimensional (2D) DSA image of a target lesion, manipulating a stent deployment mechanism to navigate the stent to the target lesion while simultaneously acquiring real-time 2D fluoroscopic images of the stent navigation, and overlaying each fluoroscopic image on the 2D DSA image having the projected virtual stent model image, where the 2D fluoroscopic images are acquired from a C-arm mounted X-ray apparatus, and updating the projection of the virtual stent model onto the fluoroscopic images whenever a new fluoroscopic image is acquired or whenever the C-arm is moved, where the stent is aligned with the virtual stent model by aligning stent end markers with virtual end markers. | 04-02-2009 |
20090093712 | Method and device for navigating a catheter through a blockage region in a vessel - The invention relates to a method for navigating a catheter with a catheter tip through a blockage region in a vessel, especially a coronary vessel, whereby the catheter is pushed forward under real-time radiological observation. The underlying objective of the invention is to arrange such a method in such a way that it permits especially simple, rapid and low risk navigation of a catheter through the blockage region in the vessel. For this purpose, in accordance with the invention a three-dimensional path through the blockage region is determined by reference to a set of sectional images or a 3D representation of the blockage region, recorded beforehand as part of a preliminary investigation, whereby a data set including the path coordinates is brought into register with the real-time radiological images, and whereby the path or a projection of the path is visualized on a display, overlaid on the real-time radiological images. | 04-09-2009 |
20090161821 | Method for detemining a defined position of a patient couch in a C-ARM computed tomography system, and C-arm computed tomography system - In order to facilitate the optimal positioning of a patient resting on the couch of a C-arm computed tomography system, an input is received, via individual pixels or areas of pixels are selected in a predetermined image data set, thus enabling the area of interest to be highlighted. In addition, image data of the patient resting on the patient positioning couch is accordingly acquired. These two processes together make it possible to calculate the position, relative to the couch, of a marked-out point that is to coincide with the isocenter for the rotation of the C-arm, and from this at least one coordinate that serves to define the position of the couch can be derived. If this coordinate is displayed, a doctor performing the treatment can move the patient positioning couch to the appropriate position by hand. It is also possible to design the couch such that it is movable by means of electric motors, and to move the patient positioning couch automatically after determining the coordinate | 06-25-2009 |
20090185657 | Registration method - The invention relates to a method for the geometric registration of an imaging device outside an object, in particular a radiation device, with a device emitting fan-shaped signals, in particular an ultrasound emitter, within the object, having the steps: recording a 3D image data record containing the device emitting fan-shaped signals using the imaging device outside the object; determining the position of the fan of the device emitting fan-shaped signals from the 3D image data record relative to the position of the imaging device outside the object; and determining a plane containing the fan as well as a line which is essentially perpendicular thereto, which connects the center point of the radiation source and the detector of the imaging device outside the object. | 07-23-2009 |
20090198126 | IMAGING SYSTEM - An imaging system for planning and monitoring a medical procedure is provided. The imaging system includes an image processing system and an imaging device operative to obtain a 3D data set and a 2D projection data set. The imaging device is communicatively coupled to the image processing system. The image processing system is operative to image register the 3D data set and the 2D projection data set from the imaging device. | 08-06-2009 |
20090279766 | EVALUATION METHOD FOR TWO-DIMENSIONAL FLUOROSCOPY IMAGES OF AN EXAMINATION OBJECT WITH TIME-CODED DISPLAY OF THREE-DIMENSIONAL RECONSTRUCTIONS - A computer receives a plurality of two-dimensional fluoroscopy images of an examination object, capture time points and projection parameters and combines the images into image groups. Each image group contains all the images, the capture time point of which is between a minimum and a maximum time point specific to the respective image group. When the image groups are sorted by ascending minimum time points, the corresponding maximum time points form a strictly monotonously ascending order. The respective minimum and maximum time points are determined so that the computer reconstructs a three-dimensional object reconstruction of the examination object based on the images assigned to the respective image group. A respective two-dimensional reconstruction display is determined by the respective three-dimensional object reconstruction and outputted to a user in a coding specific to the respective image group by a display device. | 11-12-2009 |
20100036239 | PROCEDURE TO PLAN, GUIDE AND ASSESS PERCENTANEOUS TRANSLUMINAL HEART VALVE REPAIR - A method or workflow for heart valve emplacement provides a planning stage in which the patient is imaged using a C-arm computed tomography-like image system to obtain a electrocardiogram gating image that is measured to determine a size of a prosthetic heart valve for use on the patient. A deployment stage provides that the selected heart valve prosthesis is inserted into the patient via minimally invasive procedures and is positioned at the location where it is to be anchored, and while still in a non-expanded state an image is obtained to determine if the prosthesis is properly positioned for expansion. The prosthesis is expanded so that it becomes anchored in position. In an assessment stage, an image is obtained to determine if the expanded valve prosthesis is in the desired position. If necessary, the prosthesis is moved or further expanded. A final assessment image may be obtained to check the final position. | 02-11-2010 |