Patent application number | Description | Published |
20080219567 | Tomosynthesis imaging data compression system and method - A technique and system are provided for compression of tomosynthesis imaging data. In an embodiment of the present technique, tomosynthesis imaging data may be compressed by processing a stack of tomosynthesis images such that differences between some or all of the images or estimates of the images are encoded. In another embodiment of the present technique, tomosynthesis imaging data may be compressed by differentially compressing two or more regions within the one or more tomosynthesis imaging datasets. In addition, there is provided tangible, machine readable media, with code executable to perform the acts of obtaining one or more tomosynthesis imaging datasets and compressing the one or more tomosynthesis imaging datasets using one or more compression algorithms. | 09-11-2008 |
20080234578 | Multi-modality mammography reconstruction method and system - A method, system, and software are provided for joint reconstruction of three-dimensional images using multiple imaging modalities. In an exemplary embodiment, the present approach includes providing a first dataset acquired via a first imaging technique or a first image generated from the first dataset, providing a second dataset acquired via a second imaging technique or a second image generated from the second dataset, and generating a volumetric dataset by extracting information from the first and second datasets or images. The first imaging technique may have better resolution than the second imaging technique in a first direction, and the second imaging technique may have better resolution than the first imaging technique in a second direction. There is provided a system and one or more tangible, machine readable media for performing the act of generating the volumetric dataset by extracting information from the first and second datasets or images. | 09-25-2008 |
20080242968 | Sequential image acquisition with updating method and system - In accordance with embodiments of the present, a method for acquiring an image is provided. The method comprises acquiring initial image data, identifying one or more regions of interest in at least one of the initial image data or in a first image generated from the initial image data. The method further comprises automatically deriving one or more scan parameters based upon the regions of interest, and acquiring second image data using the scan parameters. | 10-02-2008 |
20080292217 | Quantitative image reconstruction method and system - A technique is provided for generating quantitative projection images from projection images. The pixels of the quantitative projection images correspond to quantitative composition estimates of two or more materials. The quantitative projection images are reconstructed to generate a quantitative volume in which each voxel value corresponds quantitatively to the two or more materials or a mixture of the two or more materials. | 11-27-2008 |
20090135995 | Tomographic Mammography Method - A tomosynthesis system for forming a three dimensional image of an object is provided. The system includes an X-ray source adapted to irradiate the object with a beam of X-rays from a plurality of positions in a sector, an X-ray detector positioned relative to the X-ray source to detect X-rays transmitted through the object and a processor which is adapted to generate a three dimensional image of the object based on X-rays detected by the detector. The detector is adapted to move relative to the object and/or the X-ray source is adapted to irradiate the object with the beam of X-rays such that the beam of X-rays follows in a non arc shaped path and/or a center of the beam of X-rays impinges substantially on the same location on the detector from different X-ray source positions in the sector. | 05-28-2009 |
20110058724 | APPARATUS AND METHOD FOR TWO-VIEW TOMOSYNTHESIS IMAGING - The invention is a directed to an apparatus for tomosynthesis imaging, wherein the apparatus comprises an x-ray source configured to irradiate an object with a beam of x-rays and a detector configured to detect the x-ray beam that passes through the object. The apparatus further comprises a computer programmed to perform a scan, wherein the scan comprises a translation of at least one of the x-ray source and the detector along a path, an acquisition of a tomosynthesis image dataset, and a reconstruction of one or more three-dimensional (3D) volumes adapted to one or more predetermined view directions, wherein at least one of the one or more predetermined view directions is aligned outside of a central view direction. | 03-10-2011 |
20110102430 | SYSTEM AND METHOD FOR PRESENTING TOMOSYNTHESIS IMAGES - A method and system for presenting images of an object of interest is provided. The method includes producing one or more cine loops of images from at least one of multiple projection views or multiple reconstructed 3D images including a 3D volume obtained from one or more beamlines. The method also includes generating at least one combined image including a first component and a second component wherein the first component and the second component each include one of a baseline image or the one or more cine loops of images. The combined image is generated via at least one of superimposing the first component and the second component, displaying the first component adjacent to the second component, and toggling between the first component and the second component. The method also includes displaying the at least one combined image. | 05-05-2011 |
20110142201 | MULTI-VIEW IMAGING SYSTEM AND METHOD - A multi-view imaging system and method is disclosed. The system comprises: multiple X-ray sources emitting X-rays in a fan-shaped beam each having a first and a second beam edge defining a fan beam angle located in a predetermined configuration around an imaging volume; a system controller configured to operate the X-ray sources; detectors, to detect X-rays and configured to generate signals in response to the detected X-rays, wherein each of the plurality of X-ray sources are configured to emit X-rays to one or more detectors, further wherein the X-ray source and two end points of a corresponding detector define a fan beam plane, further wherein a line extending from the X-ray source within the fan beam plane and through the imaging volume defines a projection direction, wherein adjacent projection directions define an angular spacing; an object conveyance device configured for transporting an object along a path of travel through the imaging volume between the X-ray sources and the detectors; and a detector interface configured to acquire the signals from the detectors, wherein the predetermined configuration is defined wherein either: the projection directions when viewed along a longitudinal axis of the image system surround the imaging volume by an angular range of about 180 degrees; or the projection directions when viewed along a longitudinal axis of the image system surround the imaging volume by an angular range of about 180°−180/Q, wherein Q is a quantity of the projection directions. | 06-16-2011 |
20110142313 | METHOD FOR COMPUTED TOMOGRAPHY MOTION ESTIMATION AND COMPENSATION - A method and system for motion estimation and compensation are disclosed. Initially, a set of one or more initial images is reconstructed using acquired imaging data. Further, one or more regions of interest are identified in this set of reconstructed initial images. At least a set of filters is applied to the identified regions of interest to generate a sequence of filtered images. Particularly, each of the filtered images in the generated sequence of filtered images includes data acquired near a different reference point. Subsequently, a motion path corresponding to each region of interest is determined based on one or more correspondences in the sequence of filtered images. | 06-16-2011 |
20120020448 | SYSTEM AND METHOD FOR RECONSTRUCTION OF X-RAY IMAGES - Systems and method for reconstruction of x-ray images are provided. One method includes acquiring a plurality of image views using an x-ray imaging system, the plurality of image views defining a limited tomographic dataset. The method also includes performing three-dimensional (3D) image reconstruction using the plurality of image views in an iterative reconstruction, wherein the iterative reconstruction includes forming a linear combination based on a plurality of previous iteration results. The method further includes displaying an image based on the image reconstruction, wherein the image includes clinically relevant high-frequency detail information. | 01-26-2012 |
20120093383 | SEQUENTIAL IMAGE ACQUISITION METHOD - A method is provided that receives existing input image data of an object where the input image includes one or more regions of interest. Reference image data of the object is acquired by an imaging system and the scanning coordinates corresponding to the reference image data are registered with the scanning coordinates of the input image. Subsequent image data of the object is acquired by the imaging system based on the one or more regions of interest. | 04-19-2012 |
20120275563 | SYSTEM AND METHOD FOR ORIENTING AN X-RAY DETECTOR - The subject matter disclosed herein relates to X-ray imaging systems, and more specifically to digital X-ray imaging systems. In one embodiment, an imaging system includes an X-ray source configured to emit X-rays. The imaging system also includes an X-ray detector configured to detect the emitted X-rays and produce a corresponding electrical signal. The imaging system also includes a gantry configured to at least partially revolve the X-ray source and the X-ray detector about a primary rotational axis. The X-ray detector is coupled to the gantry so that a diagonal of the X-ray detector is oriented substantially perpendicular to the primary rotational axis. | 11-01-2012 |
20130051643 | SYSTEM AND METHOD FOR DISTRIBUTED PROCESSING OF TOMOGRAPHIC IMAGES - A system and method for distributed and coordinated image processing of tomographic images utilizing processors on a medical imaging device and a separate workstation is disclosed. The system includes an image acquisition device to acquire image data of a subject and an image processor to receive the image data therefrom. The image processor is programmed to reconstruct initial images of a region-of-interest (ROI) from the image data, identify initial images on which to perform image correction, and generate an image correction request for the images identified for image correction, with the image correction request specifying a processing operation to be performed on the respective images. The image processor is further programmed to transfer the reconstructed initial images to a separate workstation that automatically initiates the image correction upon verifying a presence of an image correction request on the initial images so as to generate corrected images. | 02-28-2013 |
20140037049 | SYSTEMS AND METHODS FOR INTERVENTIONAL IMAGING - An imaging system including an integral computed tomography and interventional (CT/I) system that includes a large-area detector configured to acquire projection data corresponding to a field of view of the system from one or more view angles is presented. The system includes a computing device operatively coupled to the CT/I system and configured to process the acquired projection data to generate a 2D projection image in real-time, a 3D cross-sectional image of a region of interest in the subject, a combined image using the 2D projection image and the 3D cross-sectional image and/or control selective generation of the 2D projection image, the 3D cross-sectional image and/or the combined image based on one or more imaging specifications. The system also includes a display operatively coupled to the computing device and configured to display the 2D projection image, the 3D cross-sectional image and/or the combined image based on the imaging specifications. | 02-06-2014 |
20140126696 | SYSTEM AND METHOD FOR X-RAY IMAGE ACQUISITION AND PROCESSING - An imaging system is provided. The imaging system includes an X-ray radiation source. The imaging system also includes a source controller coupled to the X-ray radiation source and configured to modulate an exposure pattern from the X-ray radiation source to enable a coded exposure sequence. The imaging system further includes a digital X-ray detector configured to acquire image data that includes at least one coded motion blur. | 05-08-2014 |
20140153690 | SYSTEMS AND METHODS FOR IMAGING DYNAMIC PROCESSES - Systems, methods and non-transitory computer readable media for imaging. The system includes one or more radiation sources and detectors configured to transmit x-ray radiation towards a subject for imaging a dynamic process in a ROI of the subject and to acquire projection data corresponding to the ROI, respectively. The system also includes a computing device operatively coupled to one or more of the radiation sources and the detectors. The computing device is configured to provide control signals for performing one or more reference scans for acquiring reference data from a plurality of angular positions around the subject and for performing one or more tomosynthesis scans using one or more tomosynthesis trajectories for acquiring tomosynthesis data following the onset of the dynamic process. Additionally, the computing device is configured to reconstruct one or more images representative of the dynamic process using the reference data and/or the tomosynthesis data. | 06-05-2014 |
20150029178 | ROBUST ARTIFACT REDUCTION IN IMAGE RECONSTRUCTION - Approaches are disclosed for removing or reducing metal artifacts in reconstructed images. The approaches include creating a metal mask in the projection domain, interpolating data within the metal mask, and perform a reconstruction using the interpolated data. In certain embodiments the metal structure is separately reconstructed and combined with the reconstructed volume. | 01-29-2015 |