Systems and methods for high-resolution mapping of tissue

摘要

According to some embodiments, methods and systems of enhancing a map of a targeted anatomical region comprise receiving mapping data from a plurality of mapping electrodes, receiving high-resolution mapping data from a high-resolution roving electrode configured to be moved to locations between the plurality of mapping electrodes, wherein the mapping system is configured to supplement, enhance or refine a map of the targeted anatomical region or to directly create a high-resolution three-dimensional map using the processor receiving the data obtained from the plurality of mapping electrodes and from the high-resolution roving electrode.

主权项

1. A method of enhancing a map of a targeted anatomical region, the method comprising:
receiving mapping data from a first mapping device or system, the first mapping device or system comprising a plurality of mapping electrodes; receiving mapping data from a second mapping device or system, the second mapping device or system being configured to be moved to locations between the plurality of mapping electrodes of the first mapping system to obtain said mapping data, wherein the second mapping device or system comprises a first electrode member and a second electrode member, the first electrode member being separated from the second electrode member by at least one electrically insulating gap, a width of the electrically insulating gap being between 0.1 mm and 1 mm, wherein the second mapping device or system is configured to also deliver ablative energy to tissue of the targeted anatomical region via the first and second electrode members; wherein the first electrode member and the second electrode member of the second mapping device or s stem function like a single electrode at frequencies within an operating radiofrequency (RF) frequency range such that the first and second electrode members collectively provide the ablative energy to tissue; wherein the first and second electrode members function as separate electrodes at mapping frequencies that are outside the operating RF frequency range, thereby facilitating high-resolution mapping; and wherein the second mapping device or system comprises a roving system that can be selectively positioned along a targeted anatomical region of a subject; processing the mapping data obtained by the first and second mapping devices or systems using a processor; wherein the second mapping device or system is configured to supplement and refine a map of the targeted anatomical region; and creating an enhanced three-dimensional map using the processor with the data obtained by the first and second mapping devices or systems.