VOXEL TAGGING USING FIBER OPTIC SHAPE SENSING

• US 20150087927A1
• Filed: 05/14/2013
• Published: 03/26/2015
• Est. Priority Date: 05/18/2012
• Status: Active Grant

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Manzke, Robert, Ramachandran, Bharat, Chan, Raymond, Klinder, Tobias
• Granted Patent: US 9,844,325 B2
• Time in Patent Office: Days
• US Class Current: 600/301
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/065 Determining position of the probe employing exclusively positioning means located on or in the probe, e.g. using position sensors arranged on the probe
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/1076 for measuring dimensions inside body cavities, e.g. using catheters A61B3/1005 takes precedence
• CPC Class Codes: A61B 5/1079 using optical or photographic means
• CPC Class Codes: A61B 5/14542 for measuring blood gases A61B5/14551 takes precedence
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/7289 Retrospective gating, i.e. associating measured signals or images with a physiological event after the actual measurement or image acquisition, e.g. by simultaneously recording an additional physiological signal during the measurement or image acquisition
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: F04C 2270/041 Controlled or regulated

Abstract

A voxel tagging system (100) includes a sensing enabled device (104) having an optical fiber (126) configured to sense induced strain within the device (Bragg grating sensor). An interpretation module (112) is configured to receive signals from the optical fiber interacting with an internal organ, e.g. heart, and to interpret the signals to determine positions visited by the at least one optical fiber within the internal organ. A data source (152, 154) is configured to generate data associated with an event or status, e.g. respiration, ECG phase, time stamp, etc.. A storage device (116) is configured to store a history (136) of the positions visited in the internal organ and associate the positions with the data generated by the data source (152, 154).

Claims

1. A system, comprising:

a sensing enabled device having at least one optical fiber configured to sense induced strain within the device;

an interpretation module configured to receive signals from the at least one optical fiber interacting with a volume and to interpret the signals to determine positions visited by the at least one optical fiber within the volume;

a data source configured to generate data associated with an event or status; and

a storage device configured to store a history of the positions visited in the volume and associate the positions with the data generated by the data source.

2. The system as recited in claim 1, wherein the data source includes a clock and the storage device stores timestamps associated with the positions in the volume.

3. The system as recited in claim 1, wherein the shape sensing enabled device is included in a medical device and the volume includes an internal cavity in a body.

4. The system as recited in claim 1, wherein the data source includes a monitoring device that monitors one or more health parameters and the storage device stores health parameter data associated with the positions in the volume.

5. The system as recited in claim 1, wherein the data source includes at least one of (i) an electrocardiogram device that monitors heart phase or (ii) a respiratory device that monitors breathing, and the storage device stores at least one of (i) the heart phase associated with the positions in the volume or (ii) breathing cycle information associated with the positions in the volume.

6. The system as recited in claim 1, further comprising a display configured to display voxel maps corresponding to the history.

7. The system as recited in claim 6, wherein the voxel maps include visual distinctions indicating at least one of (i) different acquisition times or (ii) different values for monitored data.

8. A system, comprising:

a sensing enabled device having at least one optical fiber configured to sense induced strain in the device;

a data source configured to generate event data associated with an event or status;

an index-based voxel coordinate lookup table stored in memory where indexed bins, corresponding to positions in a volume to be mapped, store the event data to provide a history of a number of visits to corresponding positions by the at least one optical fiber and the event data associated with the positions in the volume;

an interpretation module configured to receive signals from the at least one optical fiber interacting with the volume and to interpret the signals to determine visited positions by the at least one optical fiber within the volume; and

a display configured to render a map of the visited positions in the volume and indicating the event data associated with the positions.

9. The system as recited in claim 8, wherein the data source includes a clock and the storage device stores timestamps associated with the positions in the volume.

10. The system as recited in claim 8, wherein the shape sensing enabled device is included in a medical device and the volume includes an internal cavity in a body.

11. The system as recited in claim 10, wherein the data source includes a monitoring device that monitors one or more health parameters and the storage device stores health parameter data associated with the positions in the volume

12. The system as recited in claim 10, wherein the data source includes at least one of (i) an electrocardiogram device that monitors heart phase or (ii) a respiratory device that monitors breathing, and the storage device stores at least one of (i) the heart phase associated with the positions in the volume or (ii) breathing cycle information associated with the positions in the volume.

13. The system as recited in claim 10, wherein the map includes a voxel map showing the history.

14. The system as recited in claim 13, wherein the voxel map includes visual distinctions indicating at least one of (i) different acquisition times or (ii) different values for monitored data.

15. A method for mapping a volume, comprising:

acquiring a data set of visited positions in the volume by exploring the volume with a fiber optic shape sensing enabled device;

acquiring event data from at least one data source;

associating the event data with the data set of visited positions by recording the event data with the visited positions in a data structure; and

mapping the event data with the data set of visited positions.