Systems, methods, and catheters for endovascular treatment of a blood vessel

A system for endovascular treatment of a blood vessel, the system comprising:

• a control unit;
• an ultrasound device communicatively coupled to the control unit, the ultrasound device comprising an ultrasound probe comprising a subject contact surface;
• a display communicatively coupled to the control unit;
• an actuator coupled to the ultrasound probe and operable to move the subject contact surface of the ultrasound probe relative to a treatment zone of a subject;
• and
• a catheter comprising a treatment portion, said treatment portion comprising a cutting device extending radially from said catheter;
• wherein the control unit is configured to:
• determine a position of the treatment portion of the catheter as the catheter is advanced through the blood vessel;
• move the subject contact surface of the ultrasound probe relative to the treatment zone of the subject with the actuator to follow the position of the catheter as the catheter is advanced through the blood vessel;
• use the display to display a plurality of real-time ultrasound images of the catheter as the catheter is advanced through the vessel;
• determine a radial orientation of the cutting device of the catheter within the vessel;
• and
• output an indicator of the radial orientation of the cutting device on the plurality of real-time ultrasound images.