Patent application number | Description | Published |
20080240536 | METHOD OF DETECTION AND COMPENSATION FOR RESPIRATORY MOTION IN RADIOGRAPHY CARDIAC IMAGES SYNCHRONIZED WITH AN ELECTROCARDIOGRAM SIGNAL - A method of detection and compensation for respiratory motion improves the registration between a 3D pre-operation image and X-ray images acquired during a cardiac intervention. By synchronizing the X-ray images with the electrocardiogram, the disclosed method thus eliminates the motion related to the heart cycle from these images, thus isolating the contribution of the respiratory motion. From this point, an algorithm is proposed capable of attributing the motion remaining in the radiography images to respiration. The algorithm also enables this motion to be detected and compensated for in order to obtain a registration between 3D cardiac images and radiography images. | 10-02-2008 |
20090022376 | METHOD FOR PROCESSING IMAGES IN INTERVENTIONAL RADIOSCOPY TO DETECT GUIDING INSTRUMENTATION EQUIPMENT - A method for processing images in interventional radioscopy for detecting guiding instrumentation equipment. The method of the invention enables objects of longilinear or very curved shapes to be detected within the radioscopic image having very low contrast to noise ratios. In one embodiment, an algorithm enables the measured contrast to noise ratio of long or curved structures in the image to be considerably improved. To do this, an embodiment of the invention uses oriented, separable, recursive and rapid steerable detection filters. Said detection filters have a low calculation cost, even for long filters having several orientations | 01-22-2009 |
20090136112 | Method for the processing of images in interventional radioscopy - A method for the processing of images in interventional radioscopy to produce a sequence of de-noised images in which elongated objects of guiding instrumentation equipment are preserved and enhanced. The method of the invention uses a tool for indicating the confidence to be placed in a given pixel as regards its belonging to a piece of guidance equipment. This tool is used to create a combination algorithm capable of re-injecting the pixels having a low contrast-to-noise ratio into the de-noised image. This combination algorithm enables the enhancement solely of the pixels of the guidance equipment with a high confidence value so as not to produce artifacts with the enhancement of false positives. | 05-28-2009 |
20090208079 | METHOD FOR GENERATING A REGISTERED IMAGE RELATIVE TO A CARDIAC CYCLE AND A RESPIRATORY CYCLE OF A PERSON - A method for generating a registered image relative to a cardiac cycle and a respiratory cycle of a person is provided. The method includes generating a plurality of 2-D images of an anatomical region of the person. The method further includes generating a 3-D model of the anatomical region of the person. The 3-D model is associated with a predetermined phase of the cardiac cycle and a predetermined phase of the respiratory cycle. The method further includes selecting a first 2-D image from the plurality of 2-D images associated with the predetermined phase of the cardiac cycle and the predetermined phase of the respiratory cycle. The method further includes generating the registered image of the anatomical region utilizing the first 2-D image and the 3-D model. The method further includes storing the registered image in a memory device. | 08-20-2009 |
20100030068 | METHOD FOR PROCESSING IMAGES AND ASSOCIATED MEDICAL IMAGING SYSTEM - A system and method of processing images of a region of interest of a patient is provided. The method comprises acquiring a reference image of the region of interest of the patient; during a pullback of an intravascular sensor in the region of interest, triggering simultaneously the steps of: acquiring a data collected by the sensor characteristic of the region of interest; and acquiring a succession of images of the region of interest associated with the location of the intravascular sensor when acquiring the data, respectively. The method further includes registering the succession of images; associating the location of the intravascular sensor relative to the step of acquiring the data collected by the intravascular sensor; and displaying and positioning the data collected by the intravascular sensor on the reference image in correspondence to the location of the intravascular sensor at the respective step of acquiring the data. | 02-04-2010 |
20100331675 | PROCESS FOR ACQUIRING A THREE-DIMENSIONAL RADIOLOGICAL IMAGE OF AN ORGAN IN MOVEMENT - An embodiment of the invention relates to a process for acquiring a three-dimensional radiological image of an organ in movement of a patient, according to which a control unit executes steps of: ( | 12-30-2010 |
20110019878 | SYSTEM AND METHOD TO COMPENSATE FOR RESPIRATORY MOTION IN ACQUIRED RADIOGRAPHY IMAGES - A system and method to compensate for respiratory motion in imaging of instruments introduced into the subject anatomy is provided. The system can include an imaging system in communication with a controller. The controller can include a memory with program instructions for execution by the processor to perform the steps of: detecting an illustration of at least a portion of the plurality of instruments introduced into the subject anatomy in a first image and a second image, comparing and calculating a displacement of the plurality of instruments between the first and second images, calculating one of an average or median displacement of the plurality of instruments between the first and second images, and applying one of the average and the median displacement to adjust at least a portion of the first or second images or a pre-acquired three-dimensional model of the internal region of | 01-27-2011 |
20120022845 | MONITORING OF THE RADIATION DOSE ACCUMULATED BY A BODY - The embodiments of the invention pertain to a method, a computer program, and an imaging system used to monitor the dose of radiation accumulated in a body or a part of a body being or having been subject to radiation exposure during an acquisition of at least one radiological image, comprising: processing the at least one radiological image to determine a 3D model of the body or of the part of a body; applying a theoretical model for the interactions between matter and radiation to the 3D model; storing in memory the parameters characteristic of the emission of radiation produced during the acquisition of the at least one radiological image; and calculating a distribution of an accumulated radiation dose in the body or the part of a body which has been the subject of the acquisition of the at least one radiological image. | 01-26-2012 |
20130190612 | PROCESSING OF INTERVENTIONAL RADIOLOGY IMAGES BY ECG ANALYSIS - A method of processing images for interventional imaging, wherein a region of interest is visualized, is provided. The method comprises acquiring a series of 2D images of the region of interest in a patient during at least one respiratory phase, acquiring an electrocardiographic signal which is synchronized with the acquisition of the series of 2D images, processing the electrocardiographic signal to estimate at least one deformation phase of the region of interest induced by the patient's respiratory movement, and registering the different successive 2D images in relation to the estimated deformation phase. | 07-25-2013 |
20130243162 | PATIENT SKIN DOSE MAPPING METHOD - A method for monitoring a radiation dose applied to a patient being exposed or having been exposed to radiation from a medical imaging system, the medical imaging system comprising an X-ray source, the X-ray source describing a trajectory in a coordinate system of reference of the medical imaging system having an origin, the method comprising determining the current coordinates, in the coordinate system of reference of the medical imaging system, of a current region being exposed or having been exposed to radiation from the X-ray source, of an envelope of a patient model, in relation to a current position of the X-ray source, determining, from the current coordinates, a current coordinate system of reference having as origin the current position of the X-ray source, the current coordinate system of reference being centered on the current region, and displaying a representation of the current region centered on the current coordinate system of reference. | 09-19-2013 |
Patent application number | Description | Published |
20100261999 | SYSTEM AND METHOD TO DETERMINE THE POSITION OF A MEDICAL INSTRUMENT - A medical imaging method for the navigation of a guidable medical instrument intended to be moved inside the body of a patient, comprising: receiving at least one 2D image of a cavity of a patient, acquired by an acquisition device, for which cavity a 3D representation is available; receiving at least one data item on the force applied to the medical instrument to control a guiding of the medical instrument inside the patient's body; and combining data derived from information on applied force, the 2D image and the 3D representation to determine the position of the medical instrument. | 10-14-2010 |
20110249790 | METHOD FOR PROCESSING RADIOLOGICAL IMAGES - A method for processing radiological images is provided. The method includes extracting at least two image portions from at least two radiological images of an area to be treated. The method also includes defining an area in a final image for each extracted image portion. The method further includes laying out the extracted image portions in the final image so that each area of the final image comprises an extracted image portion. | 10-13-2011 |
20110268340 | METHOD TO PROCESS RADIOLOGICAL IMAGES - A method to process radiological images is provided. The method comprises partitioning a radiological image of a region to be treated into a superimposition of layers, the region to be treated comprising at least one first structure and a second structure, wherein one layer solely comprises part of the first structure to be isolated from the remainder of the image, the layer solely comprising that part of the first structure to be isolated from the remainder of the image being determined by means of a parametric model of the first structure. The method further comprises determining an image of the region to be treated from the layering thus obtained, in which the isolated part of the first structure is omitted. | 11-03-2011 |
20120123238 | TREATMENT PROCESS OF RADIOLOGICAL IMAGES FOR DETECTION OF STENOSIS - A treatment process of radiological images is provided. The process comprises obtaining at least one set of images. For each set, the process comprises: segmenting an at least one first image to obtain an at least one first segmented image and to detect a plurality of arteries of the region of interest and an at least one second image to obtain an at least one second segmented image and to detect and isolate the tool; defining in the at least one first segmented image a plurality of lines, wherein each line defines an artery; determining, from the second segmented image and the defined lines, an artery of interest corresponding to the artery in which a tool has been inserted; and applying a quantitative analysis algorithm of coronary lesions to the artery of interest to detect lesion of the artery of interest. | 05-17-2012 |
20120150520 | SELECTION OF OPTIMAL VIEWING ANGLE TO OPTIMIZE ANATOMY VISIBILITY AND PATIENT SKIN DOSE - A method is provided for monitoring the radiation dose in a body to be imaged using an X-ray imaging device comprising an X-ray emitting source, a detector, a processing unit and a display. The method comprises exposing the body to be imaged to radiation doses to acquire initial 2D images; computing a 3D model of the body in relation to the initial 2D images using the processing unit; applying a model of the interactions between matter and radiation to the 3D model of the body using the processing unit; calculating, using the processing unit, a dose map of the distribution of the accumulated radiation dose in the 3D model for parameters that define the conditions of X-ray exposure; and displaying the 3D model of the body oriented according to the position of the emitting source with the dose map. | 06-14-2012 |