Patent application number | Description | Published |
20090052613 | THREE DIMENSIONAL IMAGE PROCESSING APPARATUS AND X-RAY DIAGNOSIS APPARATUS - A three dimensional image processing apparatus includes a storage unit storing data of images in different radiographing directions together with information concerning cardiac phases, a key image selection unit selecting key images from the images, a feature point designation unit designatting feature points on the selected key images in accordance with operation by an operator, and an image reconstruction unit reconstructing a three dimensional image from the images on the basis of positions of the designated feature points, wherein the key image selection unit selects, as the key images, a pair of images which are located at the same cardiac phase and whose radiographing directions are different by a substantially predetermined angle and images spaced apart from each other by an angle obtained by substantially equally dividing an interval between the pair of images by a predetermined number. | 02-26-2009 |
20090116721 | METHOD AND SYSTEM FOR MULTI-DETECTOR-ROW COMPUTED TOMOGRAPHY UTILIZING PROJECTION DATA UP-SAMPLING WITH SHIFT - A computed tomography apparatus and method where data is upsampled with shifting to produce upsampled data. The data is shifted up and down in the same amount in the z-direction, and then upsampled through interpolation. An image is reconstructed using the upsampled data. The process is preferably performed column-by-column. An upsampling shift and interpolation kernel size can be adaptive to the data z-gradient. | 05-07-2009 |
20090213985 | SYSTEM AND METHOD FOR TOMOGRAPHIC RECONSTRUCTION UTILIZING CIRCULAR TRAJECTORY AND SCANOGRAM TO REDUCE ARTIFACTS - A computed tomography apparatus and method using line data estimated from circle data and scanogram data. An image of a subject is reconstructed using the circle data and the estimated line data. The circle data and scanogram data may be weighted in estimating the line data. The apparatus and method are useful in diminishing or eliminating streak artifacts in reconstructed images such as images including the spine. | 08-27-2009 |
20090262997 | METHOD, APPARATUS, AND COMPUTER-READABLE MEDIUM FOR PRE-RECONSTRUCTION DECOMPOSITION AND CALIBRATION IN DUAL ENERGY COMPUTED TOMOGRAPHY - A method of obtaining a computed tomography image of an object includes determining linear terms and non-linear beam hardening terms in a pair of line integral equations for dual-energy projection data from inserting average and difference from average attenuation terms, obtaining an initial solution of the line integral equation by setting the non-linear beam hardening terms to zero, and iteratively solving the line integral equations to obtain one line integral equations for each basis material. Attenuation by the first basis material corresponds to a photoelectric attenuation process, and attenuation by the second basis material corresponds to a Compton attenuation process. The line integral equations can be inverted by an inverse Radon procedure such as filtered backprojection to give images of each basis material. The images of each basis material can then be optionally combined to give monochromatic images, density and effective atomic number images, or photoelectric and Compton processes images. | 10-22-2009 |
20100208870 | SCATTERED RADIATION CORRECTION METHOD AND SCATTERED RADIATION CORRECTION APPARATUS - Scattered radiation is estimated by using a reduced image generated from a projection image, and the scattered radiation image of the projection image is acquired by enlargement processing. The scattered radiation correction of the projection image is executed by subtracting the obtained scattered radiation image from the projection image. In addition, when a primary X-ray image and a scattered radiation image in each projection direction are to be obtained by sequential approximation calculation, a primary X-ray image which has already been identified in an adjacent projection direction is used as a first estimated value (initially set value) in next sequential calculation. | 08-19-2010 |
20100283779 | METHOD AND SYSTEM FOR TOMOGRAPHIC RECONSTRUCTION IN MEDICAL IMAGING USING THE CIRCLE AND LINE TRAJECTORY - A method of reconstructing a volume image of an object includes receiving circle projection data collected by a detector along a circular path with respect to the object; receiving line projection data collected by the detector along a linear path with respect to the object; producing a reconstructed circle path volume image of the object from the pre-processed circle projection data using a reconstruction algorithm that includes a ramp filter; producing a reconstructed line path volume image of the object from pre-processed line projection data using a reconstruction algorithm that includes a Hubert filter; and combining the reconstructed circle path volume image and the reconstructed line path volume image to produce the volume image of the object. An apparatus and computer program product are also described. | 11-11-2010 |
20110317805 | SYSTEM AND METHOD FOR TOMOGRAPHIC RECONSTRUCTION UTILIZING CIRCULAR TRAJECTORY AND SCANOGRAM TO REDUCE ARTIFACTS - A computed tomography apparatus and method using line data estimated from circle data and scanogram data. An image of a subject is reconstructed using the circle data and the estimated line data. The circle data and scanogram data may be weighted in estimating the line data. The apparatus and method are useful in diminishing or eliminating streak artifacts in reconstructed images such as images including the spine. | 12-29-2011 |
20120106815 | DENOISING METHOD AND SYSTEM FOR PRESERVING CLINICALLY SIGNIFICANT STRUCTURES IN RECONSTRUCTED IMAGES USING ADAPTIVELY WEIGHTED ANISOTROPIC DIFFUSION FILTER - Embodiments and processes of computer tomography perform tasks associated with denoising a reconstructed image using an anistropic diffusion filter and adaptively weighting an iterative instance of the diffused image based upon the product of a weight value and a difference between the iterative instance of the diffused image and the original image. In general, the adaptive weighting is a negative feedback in the iterative steps. | 05-03-2012 |
20120128265 | METHOD AND SYSTEM UTILIZING ITERATIVE RECONSTRUCTION WITH ADAPTIVE PARAMETERS FOR COMPUTER TOMOGRAPHY (CT) IMAGES - The CT imaging system optimizes its image generation by adaptively weighting certain parameters during the iterations in an iterative reconstruction algorithm. The projection data is grouped into N subsets, and after each of the N subsets is processed by the ordered subsets simultaneous algebraic reconstruction technique (OSSART), the image undergoes total variation (TV) minimization process. During the iterative reconstruction algorithm, a combination of the parameters such as a total variation, a relaxation parameter and a step size parameter is assigned a respective value based upon the current value of the iteration. | 05-24-2012 |
20120308104 | METHOD AND SYSTEM UTILIZING PARAMETER-LESS FILTER FOR SUBSTANTIALLY REDUCING STREAK AND OR NOISE IN COMPUTER TOMOGRAPHY (CT) IMAGES - Photon starvation causes streaks and noise and seriously impairs the diagnostic value of the CT imaging. To reduce streaks and noise, a new scheme of adaptive Gaussian filtering relies on the diffusion-derived scale-space concept in one embodiment of the current invention. In scale-space view, filtering by Gaussians of different sizes is similar to decompose the data into a sequence of scales. As the scale measure, the variance of the filter linearly relates to the noise standard deviation of a predetermined noise model in the new filtering method. The new filter has only one optional parameter that remains stable once tuned. Although single-pass processing using the new filter generally achieves desired results, iterations are optionally performed. | 12-06-2012 |
20130016805 | METHOD AND SYSTEM FOR ACQUIRING SPARSE CHANNEL DATA AND FOR IMAGE PROCESSING UTILIZING ITERATIVE RECONSTRUCTION ALGORITHMSAANM SILVER; Michael D.AACI NORTHBROOKAAST ILAACO USAAGP SILVER; Michael D. NORTHBROOK IL USAANM SHI; DaxinAACI VERNON HILLSAAST ILAACO USAAGP SHI; Daxin VERNON HILLS IL US - The current invention is generally related to a data acquisition and or image processing method and system for acquiring and or processing sparse channel data. The sparse channel is implemented in a data acquisition system having a predetermined wider pitch between the adjacent detector cells than that in the currently available imaging systems at least in one predetermined channel direction. The sparse channel is also defined to encompass various imaging modalities including CT, positron emission tomography (PET) and positron emission tomography-computed tomography (PET/CT). The sparse channel data is acquired by the sparse channel data acquisition system, and an image is reconstructed from the sparse channel data according to a predetermined iterative reconstruction technique. | 01-17-2013 |
20130101080 | METHOD AND SYSTEM FOR SUBSTANTIALLY REDUCING RING ARTIFACT BASED UPON RING STATISTICS - The current invention is generally related to an image processing method and system for substantially reducing ring artifacts. Using the attenuation data, the ring artifacts are substantially prevented based upon two-step process, and the second ring artifact reduction step removes the undesirable rings based upon previously determined statistical data including mean and standard deviation. | 04-25-2013 |
20130177225 | SPATIAL RESOLUTION IMPROVEMENT IN COMPUTER TOMOGRAPHY (CT) USING ITERATIVE RECONSTRUCTION - Spatial resolution is substantially improved by simulating a system blur kernel including an angle variable in the forward projection during a predetermined iterative reconstruction technique. The iterative reconstruction acts as a deconvolution, which overcomes certain restrictions of system optics. In general, resolution is substantially improved with cone beam and helical data without a large increase in noise. | 07-11-2013 |
20130243349 | METHOD AND SYSTEM UTILIZING PARAMETER-LESS FILTER FOR SUBSTANTIALLY REDUCING STREAK AND OR NOISE IN COMPUTER TOMOGRAPHY (CT) IMAGES - Photon starvation causes streaks and noise and seriously impairs the diagnostic value of the CT imaging. To reduce streaks and noise, a new scheme of adaptive Gaussian filtering relies on the diffusion-derived scale-space concept in one embodiment of the current invention. In scale-space view, filtering by Gaussians of different sizes is similar to decompose the data into a sequence of scales. As the scale measure, the variance of the filter linearly relates to the noise standard deviation of a predetermined noise model in the new filtering method. The new filter has only one optional parameter that remains stable once tuned. Although single-pass processing using the new filter generally achieves desired results, iterations are optionally performed. | 09-19-2013 |
Patent application number | Description | Published |
20090246319 | Process And Formulation For Making An Egg Product With Increased Functionality And Flavor - Treated egg products are provided for imparting the flavor of egg to foods that include egg yolk treated simultaneously with protease and phospholipase. Food flavoring composition are also provided for imparting the flavor egg that can be used in lower amounts than whole egg or egg yolk. Additionally, methods are provided for preparing the egg flavored food compositions. Such egg yolk compositions are prepared by the simultaneous application of phospholipase enzyme and protease enzyme. The method further includes egg flavored food products, such as mayonnaise and salad dressings, which are prepared with the food flavoring composition. The egg flavor compositions can be used in a variety of food products to provide egg flavor and enhanced functionality. | 10-01-2009 |
20090297660 | Cheese Products Containing Galacto-Oligosaccharides And Having Reduced Lactose Levels - The processes described herein are directed to cream cheese products containing galacto-oligosaccharides and having significantly reduced lactose levels. More specifically, lactose-containing dairy substrates are contacted with lactase enzyme(s) having hydrolytic and trans-galactosylation activities effective for converting at least 20 percent of the lactose in the dairy substrate to galacto-oligosaccharides. The enzyme-treated dairy substrate is then processed into galacto-oligosaccharide containing cream cheese products having reduced lactose levels. The cream cheese products provided herein have excellent nutritional and organoleptic properties. | 12-03-2009 |
20100119650 | Pourable Food Composition with High Natural Fiber Content and Methods of Production - The present invention relates to a pourable food composition, like a dressing, that has at least 2.5 grams of total dietary fiber per 32 gram serving. The fiber is derived from at least one whole fruit or vegetable that is partially or completely dehydrated and which is subjected only to minimal processing. The food composition has a viscosity of about 3,000 to about 12,500 centipoise. The fiber may be derived from whole vegetables that are high in fiber, such as beans, carrots, broccoli and the like. The fiber may also be derived from whole fruits that are high in fiber, such as avocados, mangos, and the like. The whole food is subject to only minimal processing, such as by physical means, enzymatic means, or by fermentative means. | 05-13-2010 |
Patent application number | Description | Published |
20080295499 | Exhaust system utilizing a low-temperature oxidation catalyst - An exhaust treatment system is provided having a first exhaust passageway fluidly connected to an engine. A particulate filter and a selective catalytic reduction catalyst are situated within the first exhaust passageway. In addition, the system has a first oxidation catalyst located within the first exhaust passageway upstream of the particulate filter and the selective catalytic reduction catalyst. The system also has a second exhaust passageway fluidly connected to the first exhaust passageway upstream and downstream of the first oxidation catalyst. The exhaust treatment system further has a sensor configured to sense a parameter indicative of an exhaust gas temperature. Furthermore, the system has a controller configured to direct exhaust gas through the first oxidation catalyst when the exhaust gas temperature is below a threshold temperature and direct the exhaust gas through the second exhaust passageway when the exhaust gas temperature is above the threshold temperature. | 12-04-2008 |
20100101221 | CATALYSTS, SYSTEMS, AND METHODS FOR REDUCING NOx IN AN EXHAUST GAS - Catalysts, systems, and methods disclosed herein provide for reduced NO | 04-29-2010 |
20140157758 | After-Treatment System and Method for Six-Stroke Combustion Cycle - A method and system of operating an internal combustion engine on a six-stroke cycle utilizes an after-treatment system to reduce emissions such as nitrogen oxides. The method and system introduce a first fuel charge to a combustion chamber and combusts the first fuel charge to produce a first stoichiometric lean condition. The method and system next introduce a second fuel charge and combust the second fuel charge to produce a second stoichiometric lean conditions. The exhaust gasses are then directed to a selective catalytic reduction catalyst with a reductant agent to reduce the nitrogen oxides to nitrogen and water. | 06-12-2014 |
20140158087 | After-Treatment System and Method for Six-Stroke Combustion Cycle - An internal combustion engine operates on a six-stroke combustion cycle including a first compression stroke, a first power stroke, a second compression stroke, and a second power stroke. A first fuel charge is introduced to a combustion chamber of the engine at a first fuel rate during the first compression and/or first power stroke to produce lean exhaust gasses. A second fuel charge is also introduced to the combustion chamber during the second compression and/or second power stroke to normally produce lean exhaust gasses. Periodically, the second fuel charge can be increased to a second fuel rate to produce stoichiometric rich exhaust gasses. A lean nitrogen oxide trap can be disposed in an exhaust system associated with the engine to temporarily trap nitrogen oxides. Once saturated, the LNT can be periodically regenerated by production of the rich exhaust gasses. | 06-12-2014 |
Patent application number | Description | Published |
20100077739 | Exhaust system implementing dual stage SCR - An exhaust system for use with an engine is disclosed. The exhaust system may have a passageway, a flow control device situated to feed reductant into the passageway, and a particulate collection device located in fluid communication with the passageway downstream of the flow control device. The particulate collection device may be catalyzed to promote NO | 04-01-2010 |
20100158779 | Exhaust system having a gold-platinum group metal catalyst - A method of providing an exhaust treatment device is disclosed. The method includes applying a catalyst including gold and a platinum group metal to a particulate filter. The concentration of the gold and the platinum group metal is sufficient to enable oxidation of carbon monoxide and nitric oxide. | 06-24-2010 |
20110146252 | CANISTER AFTERTREATMENT MODULE - An aftertreatment module for use with an engine is disclosed. The aftertreatment module may have a canister, and a wall disposed within the canister and axially-dividing the canister into a first portion and a second portion. The aftertreatment module may also have a first treatment device disposed within the first portion, an inlet connected to the first portion, a second treatment device disposed within the second portion, an outlet connected to the second portion, and an external tube extending from the first portion to the second portion. | 06-23-2011 |
20140165540 | AFTERTREATMENT SYSTEM INCORPORATING HYDROLYSIS CATALYST WITH PARTICULATE FILTRATION AND SCR - An aftertreatment system is disclosed. The aftertreatment system can include a hydrolysis catalyst disposed within a first canister adjacent to a downstream end of the first canister and a nozzle positioned to inject reductant into the first canister upstream of the hydrolysis catalyst. A particulate collection device, which may be catalyzed to promote NO | 06-19-2014 |
Patent application number | Description | Published |
20100154393 | Combination partial flow particulate filter and catalyst - The present disclosure is directed to a filtering element. The filtering element may comprise at least one channel defined by at least one wall. The at least one wall extends longitudinally from a first end of the channel to a second end of the channel, the at least one channel having an unobstructed first end and an unobstructed second end. The filtering element further includes at least one partial barrier configured to reduce a path of a flow of exhaust through the at least one channel, the at least one partial barrier being positioned within the at least one channel so as to redirect a portion of the exhaust flow within the channel. The at least one channel includes a selective catalytic reduction catalyst on at least a portion of one of a surface of the at least one partial barrier or a surface of the at least one wall. | 06-24-2010 |
20120247085 | Compression Ignition Engine System With Diesel Particulate Filter Coated With NOx Reduction Catalyst And Stable Method Of Operation - An engine system includes an electronically controlled compression ignition engine configured to burn diesel fuel to produce an exhaust with a temperature and NOx to soot ratio. An aftertreatment system is fluidly connected to the engine and includes a diesel oxidation catalyst, a reductant supply, and a diesel particulate filter coated with a NOx reduction catalyst but not the diesel oxidation catalyst. A soot load density in the diesel particulate filter is stabilized by oxidizing soot at about a same rate as the compression ignition engine is supplying soot to the aftertreatment system without active regeneration. A NOx reduction reaction is catalyzed by the NOx reduction catalyst on the diesel particulate filter. | 10-04-2012 |
20140026541 | EXHAUST SYSTEM - A power system includes a dual fuel engine, a first fuel source configured to provide a first fuel to the engine, and a second fuel source configured to provide a second fuel to the engine different than the first fuel. The power system also includes an exhaust system configured to receive combustion exhaust from the engine. The exhaust system includes a reduction catalyst comprising palladium catalyst material and an oxidation catalyst comprising cobalt catalyst material. Additionally, changing a ratio of the first fuel provided to the engine relative to the second fuel changes a NOx conversion efficiency of the reduction catalyst. | 01-30-2014 |
20140178273 | AMMONIA OXIDATION CATALYST SYSTEM - A treatment device configured to receive a flow of exhaust from a power source is disclosed. The treatment device may have a first layer, a second layer, and a substrate layer. The first layer may include a selective catalytic reduction layer, and the second layer may be disposed downstream of the first layer and include an oxidation catalyst support. The substrate layer may be disposed adjacent to the second layer. Additionally, an additive may be disposed downstream of the first layer. The additive may be operative to substantially prohibit migration of a component of the second layer to the first layer upon treatment of the flow of exhaust by the oxidation catalyst support. | 06-26-2014 |