Blood Vessel Visualization Using a Micromotor Type Intravascular Ultrasound Endoscope

概要

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Intravascular ultrasound (IVUS) endoscope is limited by the inability of current devices to define the blood vessels morphology accurately. We have developed a prototype lateral-viewing IVUS catheter using a micromotor, in which an ultrasound beam is scanned radially by a micromotor instead of a rotation transmitting wire. The rotation of the micromotor is performed and controlled by an external magnetic field. To calibrate our micromotor type IUVS endoscope, 6 phantoms were prepared and reconstructed in a water tub. Finally, we reconstructed the image of 1 human arterial specimen through an in vitro experiment. These preliminary date suggested that a lateral-viewing micromotor type IVUS endoscope is feasible and accurate to evaluate the residual wall. Furthermore, it has sufficient ability to define the blood vessels morphology and to diagnose vascular diseases.
社団法人応用物理学会の論文
1997-05-30