System and method of identifying sources associated with biological rhythm disorders
An example system and method associated with identifying and treating a source of a heart rhythm disorder are disclosed. In accordance therewith, a spatial element associated with a region of the heart is selected. Progressive rotational activations or progressive focal activations are determined in relation to the selected spatial element over a period of time. The selecting and determining are repeated over multiple periods of time. A source parameter of rotation activations or focal activations is determined, wherein the source parameter indicates consistency of successive rotational activations or focal activations in relation to a portion of the region of the heart. The determining of a source parameter is repeated for multiple regions of the heart. Thereafter, representation of the source parameter is displayed for each of the multiple regions of the heart to identify a shape representing the source of the heart rhythm disorder.
1. A method associated with identifying a source of a heart rhythm disorder, the method comprising a computing device:
selecting a spatial element associated with a region of the heart;
determining progressive rotational activations or progressive focal activations in relation to the selected spatial element over a period of time;
repeating the selecting and determining over multiple periods of time;
determining an index of rotational activations or focal activations, wherein the index indicates consistency of successive rotational activations or focal activations in relation to a portion of the region of the heart;
repeating the determining of an index for multiple regions of the heart; and
displaying a representation of the index for each of the multiple regions of the heart to identify a shape representing the source of the heart rhythm disorder.
2. The method of claim 1 , wherein the index is associated with a frequency of successive rotational activations in the region of the heart.
3. The method of claim 1 , wherein the index is associated with a frequency of progressive angular displacement in the region of the heart.
4. The method of claim 1 , wherein the index is a regularity with which the rotational activations or focal activations are present.
5. The method of claim 4 , wherein the regularity is one of periodicity, repetitiveness, and/or frequency of occurrence of rotational or focal activations.
6. The method of claim 1 , wherein displaying the representation of the index comprises displaying a representation of an arithmetic mean of the index of the region over time.
7. The method of claim 1 , wherein displaying the representation of the index comprises displaying a representation of a geometric mean of the index of the region over time.
8. The method of claim 1 , wherein displaying the representation of the index comprises displaying a representation of a weighted average of the index of the region over time.
9. The method of claim 1 , further comprising displaying the representation of the index on at least one of an isolated display, a three-dimensional abstract representation, a three-dimensional representation of the cardiac tissue or a polar representation.
10. A system associated with identifying a source of a heart rhythm disorder, the system comprising:
a processor; and
a memory storing instructions that, when executed by the processor, cause the processor to perform operations comprising:
selecting a spatial element associated with a region of the heart;
determining progressive rotational activations or progressive focal activations in relation to the selected spatial element over a period of time;
repeating the selecting and determining over multiple periods of time;
determining an index of rotational activations or focal activations, wherein the index indicates consistency of successive rotational activations or focal activations in relation to a portion of the region of the heart;
repeating the determining of an index for multiple regions of the heart; and
displaying a representation of the index for each of the multiple regions of the heart to identify a shape representing the source of the heart rhythm disorder.
11. The system of claim 10 , wherein the index is associated with a frequency of successive rotational activations in the region of the heart.
12. The system of claim 10 , wherein the index is associated with a frequency of progressive angular displacement in the region of the heart.
13. The system of claim 10 , wherein the index is a regularity with which the rotational activations or focal activations are present.
14. The system of claim 13 , wherein the regularity is one of periodicity, repetitiveness, and/or frequency of occurrence of rotational or focal activations.
15. The system of claim 10 , wherein displaying the representation of the index comprises displaying a representation of an arithmetic mean of the index of the region over time.
16. The system of claim 10 , wherein displaying the representation of the index comprises displaying a representation of a geometric mean of the index of the region over time.
17. The system of claim 10 , wherein displaying the representation of the index comprises displaying a representation of a weighted average of the index of the region over time.
18. The system of claim 10 , wherein the representation of the index is displayed on at least one of an isolated display, a three-dimensional abstract representation, a three-dimensional representation of the cardiac tissue or a polar representation.
19. A non-transitory storage medium storing instructions that, when executed by a processor, cause the processor to perform operations associated with identifying a source of a heart rhythm disorder, the operations comprising:
selecting a spatial element associated with a region of the heart;
determining progressive rotational activations or progressive focal activations in relation to the selected spatial element over a period of time;
repeating the selecting and determining over multiple periods of time;
determining an index of rotational activations or focal activations, wherein the index indicates consistency of successive rotational activations or focal activations in relation to a portion of the region of the heart;
repeating the determining of an index for multiple regions of the heart; and
displaying a representation of the index for each of the multiple regions of the heart to identify a shape representing the source of the heart rhythm disorder.
20. The storage medium of claim 19 , wherein the index is associated with a frequency of successive rotational activations in the region of the heart.
21. The storage medium of claim 19 , wherein the index is associated with a frequency of progressive angular displacement in the region of the heart.
22. The storage medium of claim 19 , wherein the index is a regularity with which the rotational activations or focal activations are present.
23. The storage medium of claim 22 , wherein the regularity is one of periodicity, repetitiveness, and/or frequency of occurrence of rotational or focal activations.
24. The storage medium of claim 19 , wherein displaying the representation of the index comprises displaying a representation of an arithmetic mean of the index of the region over time.
25. The storage medium of claim 19 , wherein displaying the representation of the index comprises displaying a representation of a geometric mean of the index of the region over time.
26. The storage medium of claim 19 , wherein displaying the representation of the index comprises displaying a representation of a weighted average of the index of the region over time.
27. The storage medium of claim 19 , wherein the representation of the index is displayed on at least one of an isolated display, a three-dimensional abstract representation, a three-dimensional representation of the cardiac tissue or a polar representation.
28. A method of identifying and treating a source of a heart rhythm disorder, the method comprising a computing device:
selecting a spatial element associated with a region of the heart;
determining progressive rotational activations or progressive focal activations in relation to the selected spatial element over a period of time;
repeating the selecting and determining over multiple periods of time;
determining an index of rotational activations or focal activations, wherein the index indicates consistency of successive rotational activations or focal activations in relation to a portion of the region of the heart;
repeating the determining of an index for multiple regions of the heart;
displaying a representation of the index for each of the multiple regions of the heart to identify a shape representing the source of the heart rhythm disorder; and
selectively modifying a region of the heart associated with the shape in order to terminate or alter the heart rhythm disorder.