Energetic modulation of nerves
A method to apply a nerve inhibiting cloud surrounding a blood vessel includes creating a treatment plan, wherein the treatment plan prescribes application of the nerve inhibiting cloud towards at least a majority portion of a circumference of a blood vessel wall, and applying the nerve inhibiting cloud towards the majority portion of the circumference of the blood vessel wall for a time sufficient to inhibit a function of a nerve that surrounds the blood vessel wall.
1. A method to apply focused ultrasound to a hilum region of a kidney in a patient, comprising:
obtaining an image using an ultrasound imaging transducer, the image having an image of a blood vessel;
verifying that the blood vessel travels to a kidney by identifying a kidney in the image that has the image of the blood vessel;
determining a target region which encompasses nerves surrounding the blood vessel;
applying pulses of focused ultrasound to the target region using an ultrasound therapy transducer, wherein a feature in the image is used as a fiducial during the application of the pulses of the focused ultrasound to ensure delivery of the pulses of focused ultrasound to the target region.
2. The method of claim 1 , wherein at least one of the pulses of the focused ultrasound is less than 10 seconds in duration, and has an intensity that is approximately 200 W/cm 2 .
3. The method of claim 1 , wherein at least one of the pulses of the focused ultrasound achieves an intensity of at least 200 W/cm 2 by about 2 seconds.
4. The method of claim 1 , wherein the method further comprises moving the ultrasound therapy transducer.
5. The method of claim 4 , wherein the ultrasound therapy transducer is moved so that a region aimed at by the ultrasound therapy transducer moves along an anterior-to-posterior axis with respect to the blood vessel.
6. The method of claim 4 , wherein the ultrasound transducer is moved so that a region aimed at by the ultrasound therapy transducer moves from one side of the blood vessel to another side of the blood vessel.
7. The method of claim 1 , further comprising tracking a motion of the blood vessel using a motion tracking system.
8. The method of claim 1 , further comprising providing an image of the target region in a display.
9. The method of claim 8 , further comprising presenting a graphic in the display showing a therapy progress.
10. The method of claim 1 , wherein the act of obtaining the image comprises delivering imaging energy from a posterior position of the patient, and wherein the pulses of the focused ultrasound are applied from the posterior position of the patient.
11. The method of claim 1 , wherein the method further comprises moving the ultrasound therapy transducer in response to a movement of the blood vessel.
12. The method of claim 1 , further comprising quantifying a degree of movement of the blood vessel.
13. The method of claim 12 , wherein the degree of the movement of the blood vessel is quantified with respect to the target region.
14. The method of claim 1 , further comprising determining a distance between a region in which treatment was applied and the target region.
15. The method of claim 11 , further comprising determining whether a treatment is successful or not based at least in part on the determined distance.
16. The method of claim 15 , wherein the treatment is determined to be successful if the distance is within a prescribed distance.
17. The method of claim 15 , wherein the treatment is determined to be unsuccessful if the distance is not within a prescribed distance.
18. The method of claim 1 , further comprising:
determining a response of an autonomic nervous system; and
determining treatment parameters based at least in part on the determined response.
19. The method of claim 1 , after the act of applying the pulses, further comprising performing one of: determining a norepinephrine level, performing a tilt test, determining a carotid sinus reactivity, determining a blood pressure, and performing a microneurography.
20. The method of claim 1 , further comprising: determining a thickness of one or more tissue(s) along an energy delivery path to the hilum region.
21. The method of claim 20 , wherein the one or more tissue(s) comprises at least one of: a skin, a muscle, and a kidney.
22. The method of claim 1 , wherein the feature is a feature in the kidney.
23. The method of claim 1 , wherein the feature comprises a Doppler flow signal.