Exhibit 32.1

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

     In connection with the annual report of Volcano Corporation (the “Company”) on Form 10-K for the period ended December 31, 2006, as filed with the Securities and Exchange Commission (the “Report”), I, R. Scott Huennekens, President & Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1)	The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
2)	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: March 22, 2007	/s/ R. Scott Huennekens R. Scott Huennekens
	President & Chief Executive Officer
	(principal executive officer)

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