RANCHO CORDOVA, Calif. and TOKYO, Aug. 2 /PRNewswire-FirstCall/ -- Volcano Corporation today announced approval of the Revolution® 45 MHz rotational IVUS imaging catheter and related accessories by necessary regulatory authorities in Japan, granting entry into the Japanese market. This approval covers use of the Revolution® Catheter when used on Volcano’s IVG IVUS system. Volcano expects to launch the Revolution catheter into Japan, which represents the largest intravascular ultrasound (IVUS) market worldwide, during the fourth quarter of this year. Volcano has already commenced shipments of the Revolution® catheter into the U.S. and Europe.