Class / Patent application number | Description | Number of patent applications / Date published |
378980120 | With image subtraction or addition | 28 |
20080212742 | PERSONNEL SECURITY SCREENING SYSTEM WITH ENHANCED PRIVACY - The present invention is directed towards processing security images of people subjected to X-ray radiation. The present invention processes a generated image by dividing the generated image into at least two regions or mask images, separately processing the at least two regions of the image, and viewing the resultant processed region images either alone or as a combined image. | 09-04-2008 |
20090010392 | Radiographic Apparatus and Radiation Detection Signal Processing Method - A radiographic apparatus according to this invention, when carrying out recursive computation, pixel groups consisting of detection pixels respectively corresponding to positions on a radiation detection device are sorted into locations subjected to the recursive computation and locations exempted from the recursive computation. For the locations subjected to the recursive computation, lag-behind parts are removed by the recursive computation to obtain corrected radiation detection signals. The recursive computation is not carried out at least for the locations exempted from the recursive computation. The lag-behind parts can be removed from the radiation detection signals, with a calculation amount for the recursive computation reduced by an amount corresponding to the recursive computation excluded. | 01-08-2009 |
20090103681 | Image Data Subtraction System Suitable for Use in Angiography - An image data subtraction system suitable for use in Angiography or other medical procedure enhances vessel visualization. The system comprises an imaging system for acquiring, during a medical procedure, data representing multiple temporally sequential individual images of vessels of a portion of patient anatomy. The sequential individual images encompass introduction of a contrast agent. An image processor automatically processes the data representing the multiple temporally sequential individual images to identify a first image indicating presence of the contrast agent and a second image preceding the first image by comparing a difference between measures representative of luminance content of the first and second image, with a threshold. The second image is substantially exclusive of an indication of presence of the contrast agent. The image processor, in response to the difference exceeding the threshold, automatically selects the second image as a mask image and subtracts data representing the mask image from data representing images of the temporally sequential individual images to remove background image detail and emphasize vessel structure in providing processed image data for display. A user interface presents the processed image data for display while the patient is undergoing the medical procedure. | 04-23-2009 |
20090103682 | Method and system for intelligent digital subtraction - A method and system for intelligent digital subtraction is disclosed. The method and system for intelligent digital subtraction can be used in a roadmap application for a coronary intervention. A mask image is obtained with vessels highlighted by contrast media. A guide wire is inserted into the vessels, and a guide wire image is obtained. A direct subtraction image is generated from the guide wire image and the mask image. A reduced noise subtraction image is generated based on mutual image information between the subtraction image and the guide wire image and mutual image information between the subtraction image and the mask image. | 04-23-2009 |
20090147921 | RADIOGRAPHIC APPARATUS AND RADIATION DETECTION SIGNAL PROCESSING METHOD - A radiographic apparatus according to this invention stores, before an imaging event, offset images and gain correcting images corresponding to a plurality of storage times, and acquires a lag image and a radiographic image based on these stored images. Then, lag correction is carried out to remove lags, using the lag image, from the radiographic image. In this way, from the radiographic image taking into consideration the offset images and gain correcting images corresponding to the storage times, lags are removed using the lag image which similarly fakes into consideration the offset images and gain correcting images corresponding to the storage times. Lag-behind parts, including offset and gain components, are removed from radiation detection signals in a simple way. | 06-11-2009 |
20090180591 | Adaptive Medical Image and Mask Data Processing System - A system and method are disclosed for allowing the user to change the patient table position or x-ray detector position during an angiographic roadmapping procedure while still displaying a properly registered roadmap display by adapting the mask image to the new position. A system and method are further disclosed for allowing the user to change the field of view size (i.e., zoom factor) of the x-ray detector during an angiographic roadmapping procedure by matching the size of the existing mask to the live image. | 07-16-2009 |
20090190717 | METHOD AND SYSTEM FOR ADJUSTING THE IMAGE ACQUISITION SIZE IN A BIPLANE ANGIOGRAPHY - A system and method are disclosed for acquiring images in a biplane angiography system. The system and method allows synchronization of the image zoom format settings for the x-ray images acquired from the two planes of the biplane angiography system thus allowing the user to adjust the image zoom format setting for only one image plane. | 07-30-2009 |
20090245466 | Multi-Pass Edge Detection of Collimator Blades in Digital Radiography Images - A process for detecting the edges of collimator blades in digital radiography images in the first pass detects the edges of the collimator blades using original image, and the in the second pass repeats edge detection using an image enhanced by a histogram matching technique, for example. The edge detection using an enhanced image may also be repeated any number of times in cases of complex anatomy or when selected radiographic techniques does do not provide sufficient imaging data. The results of the second pass, or the collection of the results of multiple second passes, are then combined with the result from the first pass to form a list of the potential blade edge candidates. A desirable number of edges are then selected from the combined list to form a polygon which encloses the target area of the image, thereby providing the shutter area. | 10-01-2009 |
20090252295 | GENERATING A REPRESENTATION OF AN OBJECT OF INTEREST - A volumetric image of a space is acquired from an imaging system. The space includes an object of interest and another object, and the volumetric image includes data representing the object of interest and the other object. A two-dimensional radiograph of the space is acquired from the imaging system. The two-dimensional radiograph of the space includes data representing the object of interest and the other object. The two-dimensional radiograph and the volumetric image are compared at the imaging system. A two-dimensional image is generated based on the comparison. The generated two-dimensional image includes the object of interest and excludes the other object. | 10-08-2009 |
20090257559 | X-RAY MOVING IMAGE RADIOGRAPHING APPARATUS - An X-ray moving image radiographing apparatus includes an X-ray detector configured to detect an X-ray transmitting through a subject to acquire a subject image, an image processing unit configured to process an X-ray radiographic image output from the X-ray detector, and a control unit configured to capture a mask image by selectively scanning X-ray focal positions of an X-ray source which has a plurality of X-ray focal points so that an X-ray incident angle varies with respect to a target point of the subject, and to capture a moving image after a predetermined work is performed on the subject by selectively scanning X-ray focal positions of the X-ray source similar to the scanning operation used to capture the mask image. | 10-15-2009 |
20090262897 | Method and Device for the Separate Three-Dimensional Representation of the Arterial and Venous Vascular System Using C-Arm Angiography Systems - The invention relates to a method and a device for the separate three-dimensional representation of arteries and/or veins in a vascular system of the body by means of a C-arm biplanar system having two C-arms, which can each record a sequence of x-ray images from different projection angles during a mask or filler pass. With the filler pass, both C-arms record x-ray images, so that the x-ray images of the filler pass can be combined to form a first data record, which contains x-ray images from the arterial phase of the vascular contrasting and/or to form a second data record, which contains x-ray images from the venous phase of the vascular contrasting. This enables the arterial and venous phases to be reconstructed separately. | 10-22-2009 |
20090310749 | Radiographic imaging system - A radiographic imaging system comprises: a grid located opposite a surface of a radiographic image data detector to remove scatter radiation occurring when a radiation penetrates the subject; a grid moving mechanism for moving the grid at least in a direction; control means for acquiring first radiographic image data with the radiographic image data detector in a preset imaging time while moving the grid with the gird moving mechanism; and anomaly detection means for calculating a displacement of a grid image in the first radiographic image data based upon a position in which the grid is located and a displacement of the grid effected by the grid moving mechanism during the preset imaging time and detecting a defect in the first radiographic image data having a length agreeing with the calculated displacement of the grid image. | 12-17-2009 |
20100002839 | X-RAY IMAGING APPARATUS THAT DISPLAYS ANALYSIS IMAGE WITH TAKEN IMAGE, X-RAY IMAGING METHOD, AND IMAGE PROCESSING APPARATUS - Positioning images are created by a projection-image creating unit before imaging, and the positioning images are grouped and stored by a projection-image storage unit for each preset. When imaging is started, a positioning-information calculating unit calculates positioning parameters using the positioning images stored in the projection-image storage unit. An analysis-image-for-synthesis creating unit creates an analysis image using the positioning parameters, and an analysis-image synthesizing and displaying unit synthesizes the analysis image with a live image and displays a synthesized image. When an imaging direction of an X-ray angiography apparatus is changed, a positioning-information updating unit directly updates the positioning parameters based on an amount of change of the imaging direction. | 01-07-2010 |
20100027751 | Method for the production of angiography recordings - The invention relates to a method for the production of angiography recordings. First, a mask image is recorded with a first modality. A contrast medium is injected after the first recording. A control image is recorded with a second modality after the injection of the contrast medium. A spreading of the contrast medium is determined based on the images and the control of subsequent recordings is analyzed. A recording criterion is checked to determine whether the recording criterion has been achieved. If it has not been achieved, the control image is repeatedly recorded for repeatedly determining the spreading of the contrast medium. If it has been achieved, a contrast image is recorded with the first modality and the mask image and the contrast image are processed and analyzed. | 02-04-2010 |
20100040199 | Radiographic imaging system - A radiographic imaging system comprises: offset correction unit for performing offset correction on a radiographic image acquired by a radiation detector using a offset correction data in a storage, dark image acquisition unit for acquiring a dark image with the radiation detector at a given timing in the absence of radiation emitted from a radiation source, residual image judgment unit for judging whether or not dark image acquired by the dark image acquisition unit contains a residual image resulting from an immediately preceding irradiation, offset correction data renewal unit for producing offset correction data based upon the dark image and storing the offset correction data in the storage for renewal when the residual image judgment unit judges the dark image to contain no residual image, and producing no offset correction data when the residual image judgment unit judges the dark image to contain a residual image. | 02-18-2010 |
20100040200 | MEDICAL IMAGE PROCESSING APPARATUS, ULTRASOUND IMAGING APPARATUS, X-RAY CT (COMPUTED TOMOGRAPHY) APPARATUS, AND METHOD OF PROCESSING MEDICAL IMAGE - A cardiac cavity region specifying part specifies the position of a cardiac cavity region represented in volume data. An image generation plane determining part determines an image generation plane that includes a rotation axis intersecting the cardiac cavity region. With a direction orthogonal to the image generation plane as a view direction, a first image generator generates three-dimensional image data that three-dimensionally represents a region excluding the cardiac cavity region, based on data excluding data included in the cardiac cavity of the volume data. A second image generator generates two-dimensional image data that two-dimensionally represents a region in the image generation plane, based on the data excluding the data included in the cardiac cavity region of the volume data. An image synthesizer synthesizes the three-dimensional image data with the two-dimensional image data. A display controller causes a display to display the synthesized image. | 02-18-2010 |
20100158194 | SYSTEM AND METHOD FOR IMAGE RECONSTRUCTION - A method of performing a computed tomographic image reconstruction is provided. The method provides for performing a short scan of an imaging object to acquire a short scan data, performing a plurality of image reconstructions based on the short scan data wherein the plurality of image reconstructions result in a corresponding plurality of image volumes wherein the image reconstructions use different view weighting functions, filtering the plurality of image volumes such that when the volumes are added together, the frequency domain data is substantially uniformly weighted. Further, the method provides for combining the plurality of image volumes together to produce a final image volume. | 06-24-2010 |
20100172474 | METHOD FOR PIXEL SHIFT CALCULATION IN DIGITAL SUBTRACTION ANGIOGRAPHY AND X-RAY DIAGNOSTIC IMAGING SYSTEM FOR GENERATING IMAGES IN DIGITAL SUBTRACTION ANGIOGRAPHY - The invention relates to an X-ray diagnostic imaging system for generating images in digital subtraction angiography and a method carried out therewith, comprising the following steps:
| 07-08-2010 |
20100215150 | Real-time Assisted Guidance System for a Radiography Device - The invention provides a real-time method for navigation inside a region of interest, for use in a radiography unit including an X-ray source with an X-ray detector facing the source (cradle), and a support (table) on which an object to be radiographied, containing the region of interest, can be positioned. | 08-26-2010 |
20110026677 | RADIATION IMAGING SYSTEM, CONTROL METHOD FOR THE SAME, AND PROGRAM - A radiation imaging system includes a radiation sensor unit and a main control unit. The radiation sensor unit includes, a radiation sensor that detects the radiation image based on the radiation ray that passes through the object, a sensor characteristics correction unit that performs sensor characteristics correction on the radiation image based on image reception characteristics of the radiation sensor, an image analysis unit that analyzes the radiation image in which the sensor characteristics correction has been performed by the sensor characteristics correction unit and calculates an analysis parameter, and a transmission unit that transmits the analysis parameter as a gradation conversion parameter and the radiation image which has been subjected to the sensor characteristics correction to the main control unit. The main control unit includes, a reception unit that receives the gradation conversion parameter and the radiation image which has been subjected to the sensor characteristics correction, and a gradation conversion processing unit that performs gradation conversion processing on the radiation image which has been subjected to the sensor characteristics correction using the gradation conversion parameter. | 02-03-2011 |
20110038458 | Method for enhanced visualization of objects in interventional angiographic examinations - A method for enhanced visualization of objects in interventional angiographic examinations is provided. X-ray images are recorded during the system dose regulation phase with pure anatomy and during the filling phase with the vessels filled with contrast agent. A mask image is produced from both of the images. Native X-ray images are produced during a working or intervention phase with an object, for example a wire, a catheter or a “coil”, moved in the vessel. The images have a matrix-shaped array of pixels. The pure anatomy images are subtracted from the filling images and from the native images for generating a first subtraction image and a second subtraction image respectively. The first and the second subtraction image are processed for generating a vessel image and an object image respectively. The vessel image and the object image are processed for generating a roadmap image which is played back on a monitor. | 02-17-2011 |
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 |
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 |
20130077756 | IMAGING METHOD AND APPARATUS FOR DISPLAYING VESSELS OR ORGANS IN AN AREA OF A PATIENT UNDER EXAMINATION - An imaging method and apparatus for displaying a target object, such as one or a plurality of blood vessels and/or an organ in an area of a patient under examination, is provided. The examination can be a medical intervention. At least one recorded fluoroscopic image of the area under examination is recorded by an X-ray system. At least one up-to-date reconstructed 3D radar image is generated from signals detected a radar receiver. The target object is identified in the fluoroscopic image and in the radar image. The radar image with the fluoroscopic image is recorded with the aid of the result of the identification. The radar image and the fluoroscopic image are combined. The combined image is reproduced on a display device. | 03-28-2013 |
20150117613 | RADIATION MEASUREMENT APPARATUS - A radiation measurement apparatus | 04-30-2015 |
20150320372 | RADIATION IMAGING APPARATUS - A radiation imaging apparatus includes: a beam splitter; a detector that detects radiation passing through the beam splitter and the object; and a processing device that generates image data representing information on an inside of the object on the basis of data obtained with the detector. A first distance which is a distance between the beam splitter and the object can be changed. The processing device has a determination unit that determines the first distance that is to be set when the object is imaged, such that a value of the information on the inside of the object falls within a dynamic range of the image data. | 11-12-2015 |
20160151033 | X-RAY DIAGNOSTIC APPARATUS AND IMAGE PROCESSING APPARATUS | 06-02-2016 |
20160151034 | X-RAY DIAGNOSTIC APPARATUS | 06-02-2016 |