Synchronization of ultrasound imaging data with electrical mapping
First Claim
Patent Images
1. A method for displaying images of a cyclically moving structure in a body of a living subject, comprising the steps ofselecting a gating point in a motion cycle of said structure;
- acquiring data of said structure using a catheter having an imaging device and a position sensor;
acquiring position data comprising location and orientation coordinates of said imaging device of said catheter;
outputting said data of said structure and said position data to define an output of said data of said structure and an output of said position data, respectively;
synchronizing said output of said data of said structure with said output of said position data relative to said gating point to define synchronized data of said structure and synchronized position data, respectively, said step of synchronizing further comprising determining a time offset between said output of said data of said structure and said output of said position data relative to said gating point;
adjusting said time offset with respect to an interfering signal and acquiring images such that said images are acquired without interference;
repeating said step of synchronizing said output of said data of said structure with said output of said position data relative to said gating point; and
concurrently displaying gated images derived from said synchronized data of said structure in registration with said synchronized position data at said gating point in said motion cycle.
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Abstract
An image of an electro-anatomical map of a body structure having cyclical motion is overlaid on a 3D ultrasonic image of the structure. The electro-anatomical data and anatomic image data are synchronized by gating both electro-anatomical data acquisition and an anatomic image at a specific point in the motion cycle. Transfer of image data includes identification of a point in the motion cycle at which the 3-dimensional image was captured or is to be displayed.
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Citations
31 Claims
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1. A method for displaying images of a cyclically moving structure in a body of a living subject, comprising the steps of
selecting a gating point in a motion cycle of said structure; -
acquiring data of said structure using a catheter having an imaging device and a position sensor; acquiring position data comprising location and orientation coordinates of said imaging device of said catheter; outputting said data of said structure and said position data to define an output of said data of said structure and an output of said position data, respectively; synchronizing said output of said data of said structure with said output of said position data relative to said gating point to define synchronized data of said structure and synchronized position data, respectively, said step of synchronizing further comprising determining a time offset between said output of said data of said structure and said output of said position data relative to said gating point; adjusting said time offset with respect to an interfering signal and acquiring images such that said images are acquired without interference; repeating said step of synchronizing said output of said data of said structure with said output of said position data relative to said gating point; and concurrently displaying gated images derived from said synchronized data of said structure in registration with said synchronized position data at said gating point in said motion cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for displaying images of a cyclically moving structure in a body of a living subject, comprising the steps of:
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selecting a gating point in a motion cycle of said structure; providing a catheter having an imaging device and a position sensor; acquiring first data of said structure using said imaging device as a first modality; acquiring second data as location and orientation coordinates of said structure using said position sensor as a second modality; outputting said first data and said second data to define an output of said first data and an output of said second data, respectively; synchronizing said output of said first data with said output of said second data relative to said gating point, said step of synchronizing further comprising determining a time offset between said output of said first data and said output of said second data relative to said gating point; adjusting said time offset with respect to an interfering signal and acquiring images such that said images are acquired without interference; repeating said step of synchronizing said output of said data of said structure with said output of said position data relative to said gating point; and concurrently displaying gated images derived from said synchronized output of said first data in registration with said synchronized output of said second data at said gating point in said motion cycle. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A system for displaying images of a cyclically moving structure in a body of a living subject, comprising:
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electrical circuitry operative for selecting a gating point in a motion cycle of said structure; a catheter having a first acquisition device operative for acquiring first data of said structure using a first modality; a second acquisition device operative for acquiring second data as location and orientation coordinates of said structure using a second modality; a processor operative for synchronizing an output of said first acquisition device with an output of said second acquisition device relative to said gating point and for generating a first visual display from said output of said first acquisition device and a second visual display from said output of said second acquisition device, said synchronizing further comprising determining a time offset between said output of said first acquisition device and said output of said second acquisition device relative to said gating point, and wherein said time offset is adjusted with respect to an interfering signal and images are acquired without interference; and a display device linked to said processor for displaying said first visual display in registration with said second visual display at said gating point in said motion cycle. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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Specification