Devices, systems, and methods for improved accuracy model of vessel anatomy
Devices, systems, and methods of imaging a blood vessel are provided. For example, the method can include obtaining fluoroscopic image data of a region of interest in a blood vessel using an x-ray source; obtaining intravascular ultrasound (IVUS) data at a plurality of positions across the region of interest using an IVUS component disposed on an intravascular device; processing the fluoroscopic image data and IVUS data, including: determining, using the fluoroscopic image data, a position of the intravascular device with respect to the x-ray source at each of the plurality of positions across the region of interest; co-registering the fluoroscopic image data and the IVUS image data; and generating, a model of the region of interest including position information of a border of a lumen of the blood vessel at each of the plurality of locations; and outputting a visual representation of the model of the region of interest.
1. A system, comprising:
an intravascular ultrasound (IVUS) imaging catheter configured to acquire IVUS image data of a blood vessel of a patient;
a processor in communication with the IVUS imaging catheter and configured to:
receive the IVUS image data from the IVUS imaging catheter, wherein the IVUS image data is associated with different frequencies of ultrasound emissions;
determine, using the IVUS image data, a plurality of structural characteristics of tissue forming a wall of the blood vessel, wherein determining the plurality of structural characteristics includes distinguishing different types of structural characteristics from one another using the different frequencies of ultrasound emissions;
generate a visual representation of the blood vessel based on determining the plurality of structural characteristics; and
output the visual representation to a monitor in communication with the processor,
wherein the IVUS imaging catheter is configured to separate different exposures of ultrasound emissions in time by transmitting:
at a first time, an ultrasound emission associated with a first frequency;
at a second time, an ultrasound emission associated with a second frequency with a first gain value; and
at a third time, an ultrasound emission associated with the second frequency with a second gain value.
2. The system of claim 1 , wherein the blood vessel is a peripheral blood vessel.
3. The system of claim 1 , wherein the processor is further configured to reduce speckle in the IVUS image data by combining information from the different exposures.
4. The system of claim 3 , wherein the visual representation is based on the IVUS image data with reduced speckle.
5. The system of claim 1 , wherein the visual representation comprises color indications of determined positions of at least one of a blood-tissue boundary, a media-adventitia boundary, or stent strut locations.
6. The system of claim 5 , wherein the visual representation comprises a cross-sectional representation of the blood vessel.
7. The system of claim 5 , wherein the visual representation comprises a longitudinal representation of the blood vessel.
8. The system of claim 7 , wherein the longitudinal representation of the blood vessel comprises an indication of a position of minimal lumen area in the blood vessel, wherein the position of the minimal lumen area is calculated based on the blood-tissue boundary.
9. The system of claim 8 , wherein the longitudinal representation of the blood vessel comprises an indication of a position of the blood vessel that is un-stenosed and closest to the position of the minimal lumen area.
10. The system of claim 5 , wherein the processor is further configured to verify a deployment of a stent within the blood vessel, including determining whether struts of the stent are apposed to the blood-tissue boundary of the blood vessel.
11. The system of claim 10 , wherein the visual representation further comprises an indication of positions of the struts of the stent within the blood vessel.
12. A system, comprising:
an intravascular ultrasound (IVUS) imaging catheter configured to acquire IVUS image data of a blood vessel of a patient
a processor in communication with the IVUS imaging catheter and configured to:
receive the IVUS image data from the IVUS imaging catheter, wherein the IVUS image data is associated with different frequencies of ultrasound emissions;
determine, using the IVUS image data, a plurality of structural characteristics of tissue forming a wall of the blood vessel, wherein determining the plurality of structural characteristics includes distinguishing different types of structural characteristics from one another using the different frequencies of ultrasound emissions;
generate a visual representation of the blood vessel based on determining the plurality of structural characteristics; and
output the visual representation to a monitor in communication with the processor,
wherein the visual representation comprises color indications of determined positions of at least one of a blood-tissue boundary, a media-adventitia boundary, or stent strut locations,
wherein the visual representation comprises a longitudinal representation of the blood vessel
wherein the longitudinal representation of the blood vessel comprises an indication of a position of minimal lumen area in the blood vessel,
wherein the position of the minimal lumen area is calculated based on the blood-tissue boundary.
13. The system of claim 12 , wherein the blood vessel is a peripheral blood vessel.
14. The system of claim 12 , wherein the IVUS imaging catheter is configured to separate different exposures of ultrasound emissions in time by transmitting:
at a first time, an ultrasound emission associated with a first frequency;
at a second time, an ultrasound emission associated with a second frequency with a first gain value; and
at a third time, an ultrasound emission associated with the second frequency with a second gain value.
15. The system of claim 14 , wherein the processor is further configured to reduce speckle in the IVUS image data by combining information from the different exposures.
16. The system of claim 15 , wherein the visual representation is based on the IVUS image data with reduced speckle.
17. The system of claim 12 , wherein the visual representation comprises a cross-sectional representation of the blood vessel.
18. The system of claim 12 , wherein the longitudinal representation of the blood vessel comprises an indication of a position of the blood vessel that is un-stenosed and closest to the position of the minimal lumen area.
19. The system of claim 12 , wherein the processor is further configured to verify a deployment of a stent within the blood vessel, including determining whether struts of the stent are apposed to the blood-tissue boundary of the blood vessel.
20. The system of claim 19 , wherein the visual representation further comprises an indication of positions of the struts of the stent within the blood vessel.
21. A system, comprising:
an intravascular ultrasound (IVUS) imaging catheter configured to acquire IVUS image data of a blood vessel of a patient
a processor in communication with the IVUS imaging catheter and configured to:
receive the IVUS image data from the IVUS imaging catheter, wherein the IVUS image data is associated with different frequencies of ultrasound emissions;
determine, using the IVUS image data, a plurality of structural characteristics of tissue forming a wall of the blood vessel, wherein determining the plurality of structural characteristics includes distinguishing different types of structural characteristics from one another using the different frequencies of ultrasound emissions;
generate a visual representation of the blood vessel based on determining the plurality of structural characteristics; and
output the visual representation to a monitor in communication with the processor,
wherein the visual representation comprises color indications of determined positions of at least one of a blood-tissue boundary, a media-adventitia boundary, or stent strut locations,
wherein the processor is further configured to verify a deployment of a stent within the blood vessel, including determining whether struts of the stent are apposed to the blood-tissue boundary of the blood vessel.
22. The system of claim 21 , wherein the blood vessel is a peripheral blood vessel.
23. The system of claim 21 , wherein the IVUS imaging catheter is configured to separate different exposures of ultrasound emissions in time by transmitting:
at a first time, an ultrasound emission associated with a first frequency;
at a second time, an ultrasound emission associated with a second frequency with a first gain value; and
at a third time, an ultrasound emission associated with the second frequency with a second gain value.
24. The system of claim 23 , wherein the processor is further configured to reduce speckle in the IVUS image data by combining information from the different exposures.
25. The system of claim 24 , wherein the visual representation is based on the IVUS image data with reduced speckle.
26. The system of claim 21 , wherein the visual representation comprises a cross-sectional representation of the blood vessel.
27. The system of claim 21 , wherein the visual representation comprises a longitudinal representation of the blood vessel.
28. The system of claim 27 , wherein the longitudinal representation of the blood vessel comprises an indication of a position of minimal lumen area in the blood vessel, wherein the position of the minimal lumen area is calculated based on the blood-tissue boundary.
29. The system of claim 28 , wherein the longitudinal representation of the blood vessel comprises an indication of a position of the blood vessel that is un-stenosed and closest to the position of the minimal lumen area.
30. The system of claim 21 , wherein the visual representation further comprises an indication of positions of the struts of the stent within the blood vessel.