Abstract: Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants.

Abstract: Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants.

Abstract: Systems for detecting and tracking of objects and co-registration are described which utilizes methods to create a linearized view of a lumen using multiple imaged frames. In reality a lumen has a trajectory in 3-D, but only a 2-D projected view is available for viewing. The linearized view unravels this 3-D trajectory thus creating a linearized map for every point on the lumen trajectory as seen on the 2-D display. In one mode of the invention, the trajectory is represented as a linearized display along 1 dimension. This linearized view is also combined with lumen measurement data and the result is displayed concurrently on a single image. In another mode of the invention, the position of a treatment device is displayed on the linearized map in real time. In a further extension of this mode, the profile of the lumen dimension is also displayed on this linearized map.

Abstract: Systems for linear mapping of lumens are described which utilizes methods to create a linearized view of a lumen using multiple imaged frames. In reality a lumen has a trajectory in 3-D, but only a 2-D projected view is available for viewing. The linearized view unravels this 3-D trajectory thus creating a linearized map for every point on the lumen trajectory as seen on the 2-D display. In one mode of the invention, the trajectory is represented as a linearized display along 1 dimension. This linearized view is also combined with lumen measurement data and the result is displayed concurrently on a single image. In another mode of the invention, the position of a treatment device is displayed on the linearized map in real time. In a further extension of this mode, the profile of the lumen dimension is also displayed on this linearized map.

Abstract: Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants.

Abstract: Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants.

Abstract: Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants.

Abstract: Multifunctional guidewire assemblies and system for analyzing anatomical and functional parameters are described. Using a single guidewire assembly, functional and anatomical measurements and identification of lesions may be made. Functional measurements such as pressure may be obtained with a pressure sensor on the guidewire while anatomical measurements such as luminal dimensions may be obtained by utilizing an electrode assembly along the guidewire. The vascular network and stenosed lesions may be modeled into an equivalent electrical network and solved based on the measured parameters to obtain unknown parameters of the electrical network. Several treatment plan options may be constructed where each plan may correspond to the treatment of a subset of particular lesions. The anatomical outcome for each of the treatment plans may be estimated and the equivalent modified electrical parameters may be determined.

Abstract: Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants.

Abstract: Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants.

Abstract: Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants.

Abstract: Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants.

Abstract: Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants.

Abstract: Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants.

Abstract: Methods and systems for determining information about a vascular bodily lumen are described. An exemplary method includes generating an electrical signal, delivering the electrical signal to a plurality of excitation elements in the vicinity of the vascular bodily lumen, measuring a responsive electrical signal from a plurality of sensing elements in response to the delivered electrical signal, and determining a lumen dimension. Specific embodiments include generating a multiple frequency electrical signal. Another embodiment includes measuring a plurality of responsive signals at a plurality of frequencies. Still other embodiments include using spatial diversity of the excitation elements. Yet other embodiments use method for calibration and de-embedding of such measurements to determine the lumen dimensions. Diagnostic devices incorporating the method are also disclosed, including guide wires, catheters and implants.

Abstract: Pixels in a provided image for which the content has been provided in error are identified. This image content is processed to provide a version of the image wherein the error is at least partially concealed while also creating ancillary information regarding the errored pixel(s) and the spatial location to which such pixel(s) corresponds to thereby provide a record that describes which pixels in the image content were provided in error. An optional user-selectable option can permit displaying either of the aforementioned corrected version of the image wherein the error is at least partially concealed and a version of the image wherein the ancillary information is used to depict the errored pixel(s) such that provided-in-error pixels are readily distinguished from correctly-provided pixels.

Abstract: Pixels in a provided image for which the content has been provided in error are identified. This image content is processed to provide a version of the image wherein the error is at least partially concealed while also creating ancillary information regarding the errored pixel(s) and the spatial location to which such pixel(s) corresponds to thereby provide a record that describes which pixels in the image content were provided in error. An optional user-selectable option can permit displaying either of the aforementioned corrected version of the image wherein the error is at least partially concealed and a version of the image wherein the ancillary information is used to depict the errored pixel(s) such that provided-in-error pixels are readily distinguished from correctly-provided pixels.

Abstract: A method and apparatus for performing a predictive motion search in a video encoder system using motion vectors representing the difference in coordinates of a macroblock of data in a current frame of video data and coordinates of a related macroblock of data in a reference frame of video data. A plurality of motion vector predictors is obtained where the motion vector predictors represent approximations of possible motion vectors for a current macroblock. A search pattern is defined. Each motion vector predictor of the plurality of motion vector predictors is searched around using the search pattern. A final motion vector is then determined.

Abstract: A method and apparatus for processing frames of pixel data is provided. The apparatus can be a video encoder and includes an interface receiving a current frame including a plurality of blocks of pixel data. The apparatus further includes a processing device coupled to the interface, with the processing device: determining a filter parameter setting for each of the plurality of blocks of the current frame based on encoding parameters of the current frame and based on motion characteristics derived using a previous reconstructed frame; and filtering each of the plurality of blocks based on the filter parameter setting to use in generating a filtered output with mitigated noise.

Abstract: A video encoder (300) and method (400) for encoding video content that performs providing (402) transform coefficients and associated side information for macroblocks forming part of a frame of a video stream. Next the method processes (403) the transform coefficients and associated side information to obtain entropy coded information for the macroblocks. Slices are formed (404) from the entropy coded information, the slices having slice widths that are adaptively adjusted based upon the non-uniformity of video content of the frame.