Wollstein
Chaim Gad Wollstein, Pittsburgh, PA US
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20120213423 | BLOOD VESSEL SEGMENTATION WITH THREE DIMENSIONAL SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY - In the context of the early detection and monitoring of eye diseases, such as glaucoma and diabetic retinopathy, the use of optical coherence tomography presents the difficulty, with respect to blood vessel segmentation, of weak visibility of vessel pattern in the OCT fundus image. To address this problem, a boosting learning approach uses three-dimensional (3D) information to effect automated segmentation of retinal blood vessels. The automated blood vessel segmentation technique described herein is based on 3D spectral domain OCT and provides accurate vessel pattern for clinical analysis, for retinal image registration, and for early diagnosis and monitoring of the progression of glaucoma and other retinal diseases. The technique employs a machine learning algorithm to identify blood vessel automatically in 3D OCT image, in a manner that does not rely on retinal layer segmentation. | 08-23-2012 |
Chaim-Gadi Wollstein, Pittsburgh, PA US
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20090268159 | AUTOMATED ASSESSMENT OF OPTIC NERVE HEAD WITH SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY - A fully automated optic nerve head assessment system, based on spectral domain optical coherence tomography, provides essential disc parameters for clinical analysis, early detection, and monitoring of progression. | 10-29-2009 |
Chris Wollstein, New York, NY US
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20090198585 | Vote up count down - An electronic commerce system of auctioning products on-line is provided. An auctioneer presents a list of available products to consumers. The products may be present to consumers using a web site. Customers are able to “vote up” as many products as they want. The product that the most customers have voted up will go to a “countdown” sale mode, where it gets progressively less expensive, for example one penny cheaper every second, until someone purchases the product. Once someone purchases the product, the next product with the most votes immediately replaced it and goes into countdown mode. | 08-06-2009 |
Devlin Stuart Wollstein, Queensland AU
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20080224034 | System and Method for Locating One or More Persons - An apparatus ( | 09-18-2008 |
Dirk Wollstein, Dresden DE
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20090000950 | AUTOMATIC DEPOSITION PROFILE TARGETING - A method of automatic deposition profile targeting for electrochemically depositing copper with a position-dependent controllable plating tool including the steps of depositing copper on a patterned product wafer, measuring an actual thickness profile of the deposited copper and generating respective measurement data, feeding the measurement data to an advanced process control (APC) model and calculating individual corrections for plating parameters in the position-dependent controllable plating tool. | 01-01-2009 |
20090057153 | PROFILE CONTROL ON RING ANODE PLATING CHAMBERS FOR MULTI-STEP RECIPES - The present disclosure generally addresses the problem of controlling a plating profile in multi-step recipes and addresses, in particular, the problem of compensating for variations of the plating tool state to stabilize the plating results. The compensation is done by adjustments of corrections factors for currents of a plating tool in a multi-anode configuration. The described method enables control of recipes with different current ratios in each recipe step and models different deposition sensitivities in each recipe step. Generally, the method of the present disclosure requires a measurement step, where the tool state is determined, and a data processing step, where the correction factors are set based on models describing the plating process and the tool sate. | 03-05-2009 |
Gadi Wollstein, Pittsburgh, PA US
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20090028400 | SYSTEM AND METHOD FOR VISUALIZING A STRUCTURE OF INTEREST - A system. The system includes a computing device configured for communication with an imaging system and with a display device. The computing device includes a contour modeling module. The contour modeling module is configured for superimposing reference anchors on a cross-sectional image generated from 3D image data, for generating a line which connects the reference anchors, for sampling the 3D image data in a variable thickness plane defined by the connecting line, and for generating a contour-modeled C-mode image from the sampled 3D image data. | 01-29-2009 |
20110176716 | ESTABLISHING COMPATIBILITY BETWEEN TWO- AND THREE-DIMENSIONAL OPTICAL COHERENCE TOMOGRAPHY SCANS - Advances in optical coherence tomography (OCT) have prompted a transition from time domain OCT, providing 2D OCT images, to spectral domain OCT, which has a 3D imaging capability. Yet conventional technology offers little toward the goal of inter-device compatibility between extant 2D OCT images and newer 3D OCT images for the same or comparable subjects, as in the context of ongoing monitoring the quantitative status of a patient's eyes. The inventive methodology is particularly useful to identify the scan location of tissue in a 2D OCT image within the 3D volumetric data, thereby allowing clinicians to image a patient via 3D OCT, based on available 2D OCT images, with minimal inter-device variation. | 07-21-2011 |
20120184845 | AUTOMATED MACULAR PATHOLOGY DIAGNOSIS IN THREEDIMENSIONAL (3D) SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY (SD-OCT) IMAGES - Systems and methods of analyzing an optical coherence tomography image of a retina are discussed. A 2-dimensional slice of the image can be aligned to produce an approximately horizontal image of the retina and an edge map based at least in part on the aligned slice. Also, at least one global representation can be determined based on a (multi-scale) spatial division, such as multi-scale spatial pyramid, on the slice and/or edge map. Creating the local features is based on the specified cell structure of the global representation. The local features can be constructed based on local binary pattern (LBP)-based features. Additionally, a slice can be categorized into one or more categories via one or more classifiers (e.g., support vector machines). Each category can be associated with at least one ocular pathology, and classifying can be based on the constructed global descriptors, which can include the LBP-based local descriptors. | 07-19-2012 |
20130077046 | NORMALIZATION OF RETINAL NERVE FIBER LAYER THICKNESS MEASUREMENTS MADE BY TIME DOMAIN-OPTICAL COHERENCE TOMOGRAPHY - A scan location matching (SLM) method identifies conventional time domain optical coherence tomography (TD-OCT) circle scan locations within three-dimensional spectral domain OCT scan volumes. A technique uses both the SLM algorithm and a mathematical retinal nerve fiber bundle distribution (RNFBD) model, which is a simplified version of the anatomical retinal axon bundle distribution pattern, to normalize TD-OCT thickness measurements for the retinal nerve fiber layer (RNFL) of an off-centered TD-OCT circle scan to a virtual location, centered on the optic nerve head. The RNFBD model eliminates scan-to-scan RNFL thickness measurement variation caused by manual placement of TD-OCT circle scan. | 03-28-2013 |
Ronit Wollstein, Pittsburgh, PA US
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20110245747 | Splint for treatment of musculoskeletal injury of the hand - A splint for treatment of a joint including a generally longitudinal body including first and second portions forming inner and outer splint layers, with the second portion being rollable onto the first portion to form the splint. The outer splint layer may include a longitudinal cavity for insertion of a stay, and/or may include a fluted section for permitting insertion of a stay between the inner and outer splint layers. The longitudinal body may be linear or curved. The first and second portions may include areas having different thicknesses for adding rigidity to the splint structure at a predetermined location. The splint may include a cutout for exposing a predetermined portion of a user's finger. The splint may be made of a flexible material such as rubber, silicone and/or urethane. The splint may include a reduced friction surface layer for minimizing sticking of the splint during donning. | 10-06-2011 |