Patent application number | Description | Published |
20120289821 | C-ARM INTEGRATED ELECTROMAGNETIC TRACKING SYSTEM - A medical imaging system and a method electromagnetically track a position of structures with the medical imaging system and a C-arm arrangement. The medical imaging system contains a C-arm, a gantry, and at least one electromagnetic field generator assembly with at least one electromagnetic field generator which interacts with an electromagnetic sensor from receiving the electromagnetic radiation. Preferably, the electromagnetic sensor is positioned within a region of surgical interest in a patient. The electromagnetic field generator is directly embedded into the C-arm. | 11-15-2012 |
20120289826 | METHOD FOR LOCALIZATION AND IDENTIFICATION OF STRUCTURES IN PROJECTION IMAGES - A method for localization and identification of a structure in a projection image with a system having a known system geometry, includes acquiring a preoperative computer-tomography or CT image of a structure, preprocessing the CT-image to a volume image, acquiring an intraoperative two dimensional or 2D X-ray image, preprocessing the 2D X-ray image to a fix image, estimating an approximate pose of the structure, calculating a digitally reconstructed radiograph or DRR using the volume image, the estimated pose and the system geometry, and calculating a correlation between the generated DRR and the fix image, with a correlation value representing matching between the generated DRR and the fix image. The method significantly decreases the number of wrong-level surgeries and is independent of the surgeon's ability to localize and/or identify a target level in a body. | 11-15-2012 |
20140334709 | 3D-2D IMAGE REGISTRATION FOR MEDICAL IMAGING - A method of 3D-2D registration for medical imaging includes the following steps: providing a first input interface for acquiring a three-dimensional image; providing a second input interface for acquiring a fixed two-dimensional image using an imaging system that includes a source and a detector and that has an unknown source-detector geometry; initializing image transformation parameters and source-detector geometry parameters; generating a reconstructed two-dimensional image from the three-dimensional image using the image transformation parameters and the source-detector geometry parameters; determining an image similarity metric between the fixed two-dimensional image and the reconstructed two-dimensional image; and updating the image transformation parameters and the source-detector geometry parameters using the image similarity metric, and a corresponding non-transitory computer-readable medium and apparatus. | 11-13-2014 |
20150085981 | METHOD OF IMAGE REGISTRATION IN A MULTI-SOURCE/SINGLE DETECTOR RADIOGRAPHIC IMAGING SYSTEM, AND IMAGE ACQUISITION APPARATUS - A method, an imaging apparatus and a computer readable medium are enabled for automatically registering medical images. The imaging apparatus may be an amended C-arm. The image acquisition apparatus has a primary x-ray source and at least one auxiliary x-ray source, a detector for receiving radiation of the primary and auxiliary x-ray source, and an interface to a registration unit. The registration unit computes a 3D/2D registration of a provided 3D image and at least two acquired 2D images. An output interface is configured to provide an output and to display the registered images on a monitor. | 03-26-2015 |