| Patent application number | Description | Published |
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| 20090303252 | Registration Of CT Image Onto Ultrasound Images - Embodiments for registering a CT image onto ultrasound images are disclosed. At a preoperative stage, a plurality of first ultrasound images are formed during a respiratory cycle and a CT image is obtained at the maximum inspiration. The CT image is registered onto each of the ultrasound images to thereby form ultrasound-CT registered images. The ultrasound-CT registered images may be stored in the storage unit. Subsequently, at an intraoperative stage, a plurality of second ultrasound images may be sequentially formed in real time. Similarities may be measured between the first ultrasound images and the second ultrasound images, and the ultrasound-CT registered images, each corresponding to each of the first ultrasound images having highest similarity to the second ultrasound image may be retrieved. The retrieved ultrasound image and the second ultrasound image may be displayed at the same time. | 12-10-2009 |
| 20090304252 | Non-Rigid Registration Between CT Images And Ultrasound Images - There are disclosed embodiments for non-rigid image registration between 3-dimensional ultrasound and CT images by using intensity and gradient information of vessels and diaphragm. An ultrasound image forming unit transmits/receives ultrasound signals to/from a target object to thereby output electrical receive signals, and forms 3-dimensional ultrasound images based on the electrical receive signals. A CT image forming unit forms 3-dimensional CT images of the target object. A registration unit determines first and second objective functions associated with diaphragm and vessel regions of the target object, respectively, based on intensity and gradient information upon portions corresponding to the diaphragm and vessel regions in each of the 3-dimensional ultrasound and CT images. The registration unit performs non-rigid image registration between the 3-dimensional ultrasound images and the 3-dimensional CT images based on the first and second objective functions. | 12-10-2009 |
| 20090306507 | Anatomical Feature Extraction From An Ultrasound Liver Image - There is disclosed an embodiment for extracting anatomical features from a 3-dimensional B-mode ultrasound liver image for image registration. A system extracts anatomical features from a 3-dimensional B-mode ultrasound liver image for image registration. An image forming unit forms a 3-dimensional ultrasound liver image based on ultrasound signals reflected from the liver. A diaphragm extracting unit extracts a diaphragm region from the 3-dimensional B-mode ultrasound liver image. A vessel extracting unit extracts vessel regions from the 3-dimensional ultrasound liver image. A diaphragm refining unit refines the extracted diaphragm region with the extracted vessel regions to remove clutters from the diaphragm region. A registration unit extracts sample points from the diaphragm region with the clutters removed and the vessel regions for image registration. | 12-10-2009 |
| 20100079609 | Apparatus and method of obtaining high resolution image - Disclosed is a high resolution image obtaining apparatus and method. The high resolution image obtaining apparatus may divide an input image frame into a background region and foreground region and apply an optimized resolution enhancement algorithm to each region, thereby effectively obtaining a high resolution image frame with respect to the input image frame. | 04-01-2010 |
| 20110026796 | SENSOR COORDINATE CALIBRATION IN AN ULTRASOUND SYSTEM - There is disclosed an embodiment for performing a calibration of a sensor by using an image registration between a three-dimensional ultrasound image and computerized tomography (CT) image. An ultrasound image forming unit includes an ultrasound probe and forms a three-dimensional ultrasound image of a target object. A sensor is coupled to the ultrasound probe. A memory stores a three-dimensional computed tomography (CT) image of the target object and position information on a position between the three-dimensional ultrasound image and the sensor. A processor performs image registration between the three-dimensional CT image and the three-dimensional ultrasound image to form a first transformation function for transforming a position of the sensor to a corresponding position on the three-dimensional CT image and performs calibration of the sensor by applying the position information to the first transformation function. | 02-03-2011 |
| 20110028843 | PROVIDING A 2-DIMENSIONAL CT IMAGE CORRESPONDING TO A 2-DIMENSIONAL ULTRASOUND IMAGE - There is disclosed a system and method for providing a 2-dimensional CT image corresponding to a 2-dimensional ultrasound image by performing an image registration between a 3-dimensional ultrasound image and a 3-dimensional CT image. The system comprises: a CT image forming unit configured to form a plurality of 3-dimensional CT images for an object of interest inside a target object; an ultrasound image forming unit configured to form at least one 3-dimensional ultrasound image for the object of interest; a processor configured to perform image registration between the 3-dimensional CT images and the at least one 3-dimensional ultrasound image to obtain a first transform function; and a user input unit configured to receive input information from a user, wherein the ultrasound image forming unit is further configured to form a 2-dimensional ultrasound image from the at least one 3-dimensional ultrasound image based on the input information, and wherein the processor is further configured to obtain a plurality of 2-dimensional CT images from the 3-dimensional CT images based on the input information and the first transform function and to detect similarities between the 2-dimensional ultrasound image and the 2-dimensional CT images to select one of the 2-dimensional CT images corresponding to the 2-dimensional ultrasound image. | 02-03-2011 |
| 20110028844 | SYSTEM AND METHOD FOR PROVIDING 2-DIMENSIONAL COMPUTERIZED-TOMOGRAPHY IMAGE CORRESPONDING TO 2-DIMENSIONAL ULTRASOUND IMAGE - Embodiments for providing a 2-dimensional (D) computerized-tomography (CT) image corresponding to a 2-D ultrasound image through image registration between 3-D ultrasound and CT images are disclosed. An imaging system comprises a CT imaging unit, an ultrasound image forming unit, a storing unit, a processor and a display unit. The processor extracts the 2-D CT image from the 3-D ultrasound-CT registered image by performing a rigid-body transform upon the 3-D ultrasound image and calculating similarities between reference images and the 2-D ultrasound images, wherein the reference images are obtained through the rigid-body transform. | 02-03-2011 |
