5709 results about "Low resolution" patented technology

An apparatus and method for allowing multiple high and low resolution SBI and conventional FPA imaging devices to use a common high resolution monitor and archive device without increasing or significantly changing the footprint of existing devices. This system and method uses a frame grabber for digitizing video from the legacy FPA devices, a frame mapper for rendering or mapping the FPA video into the SBI digital format, a converter for rasterizing SBI data streams into pixel-oriented FPA video frames, an input selector for selecting which FPA or SBI imaging device to display on a high resolution monitor, an processor for storing and manipulating frames of video, a video output encoder for converting the SBI frames into a video signal appropriate for display on the high resolution monitor, and an output means for connecting to a storage device for archiving video and images.

A system and method for using magnetic resonance imaging to increase the accuracy of electrophysiologic procedures is disclosed. The system in its preferred embodiment provides an invasive combined electrophysiology and imaging antenna catheter which includes an RF antenna for receiving magnetic resonance signals and diagnostic electrodes for receiving electrical potentials. The combined electrophysiology and imaging antenna catheter is used in combination with a magnetic resonance imaging scanner to guide and provide visualization during electrophysiologic diagnostic or therapeutic procedures. The invention is particularly applicable to catheter ablation, e.g., ablation of atrial fibrillation. In embodiments which are useful for catheter ablation, the combined electrophysiology and imaging antenna catheter may further include an ablation tip, and such embodiment may be used as an intracardiac device to both deliver energy to selected areas of tissue and visualize the resulting ablation lesions, thereby greatly simplifying production of continuous linear lesions. The invention further includes embodiments useful for guiding electrophysiologic diagnostic and therapeutic procedures other than ablation. Imaging of ablation lesions may be further enhanced by use of MR contrast agents. The antenna utilized in the combined electrophysiology and imaging catheter for receiving MR signals is preferably of the coaxial or “loopless” type. High-resolution images from the antenna may be combined with low-resolution images from surface coils of the MR scanner to produce a composite image. The invention further provides a system for eliminating the pickup of RF energy in which intracardiac wires are detuned by filtering so that they become very inefficient antennas. An RF filtering system is provided for suppressing the MR imaging signal while not attenuating the RF ablative current. Steering means may be provided for steering the invasive catheter under MR guidance. Other ablative methods can be used such as laser, ultrasound, and low temperatures.

A data collection system collects and stores physiological data from an ambulatory patient at a high resolution and / or a high data rate (“more detailed data”) and sends a low-resolution and / or downsampled version of the data (“less detailed data”) to a remote server via a wireless network. The server automatically analyzes the less detailed data to detect an anomaly. A two-tiered analysis is used, where the first tier is less specific than the second tier. If the less specific analysis detects or suspects the anomaly, the server signals the data collector to send more detailed data that corresponds to a time period associated with the anomaly. The more specific second tier analysis the more detailed data to verify the anomaly. The server may also store the received data and make it available to a user.