A device for ultrasonic imaging, and methods for the use an manufacture thereof, particularly of small coronary vessels. The device comprises an elongate member with a distal end that can be positioned within a small vessel of a patient's body while a proximal end is located outside the body, a transducer...http://www.google.de/patents/US5445155?utm_source=gb-gplus-sharePatent US5445155 - Intravascular imaging apparatus and methods for use and manufacture
