POWER OF ATTORNEY

	Know all by these presents, that the undersigned hereby
constitutes and appoints each of Darin Lippoldt, John Dahldorf and
Linda Kaechele, or either of them signing singly, and with full power
of substitution, the undersigned's true and lawful attorney-in-fact
to:

	(1) prepare, execute in the undersigned's name and on the
	undersigned's behalf, and submit to the U.S. Securities
	and Exchange Commission (the "SEC") a Form ID, including
	amendments thereto, and any other documents necessary or
	appropriate to obtain codes and passwords enabling the
	undersigned to make electronic filings with the SEC of
	reports required by Section 16(a) of the Securities
	Exchange Act of 1934 or any rule or regulation of the SEC;

	(2) execute for and on behalf of the undersigned, in the
	undersigned's capacity as an officer, director and/or more
	than 10% stockholder of Volcano Corporation (the
	"Company"), Forms 3, 4, and 5 in accordance with
	Section 16(a) of the Securities Exchange Act of 1934 and
	the rules thereunder;

	(3) do and perform any and all acts for and on behalf of the
	undersigned which may be necessary or desirable to
	complete and execute any such Form 3, 4, or 5, complete
	and execute any amendment or amendments thereto, and
	timely file such form with the SEC and any stock exchange
	or similar authority; and

	(4) take any other action of any type whatsoever in connection
	with the foregoing which, in the opinion of such
	attorney-in-fact, may be of benefit to, in the best
	interest of, or legally required by, the undersigned, it
	being understood that the documents executed by such
	attorney-in-fact on behalf of the undersigned pursuant to
	this Power of Attorney shall be in such form and shall
	contain such terms and conditions as such attorney-in-fact
	may approve in such attorney-in-fact's discretion.

       	The undersigned hereby grants to each such attorney-in-fact full
power and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the exercise
of any of the rights and powers herein granted, as fully to all
intents and purposes as the undersigned might or could do if
personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or
such attorney-in-fact's substitute or substitutes, shall lawfully do
or cause to be done by virtue of this power of attorney and the
rights and powers herein granted.  The undersigned acknowledges that
the foregoing attorneys-in-fact, in serving in such capacity at the
request of the undersigned, are not assuming, nor is the Company
assuming, any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.

       	This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3, 4, and 5
with respect to the undersigned's holdings of and transactions in
securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing
attorneys-in-fact. This Power of Attorney supersedes any previous
power of attorney granted by the undersigned with respect to Forms 3,
4 or 5.

       	IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 3 day of February, 2011.

					/s/ John Dahldorf
					---------------------------
					John Dahldorf