EXHIBIT 23.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the reference to our firm under the caption "Experts" and to the use of our report dated March 10, 2006 in Amendment No. 3 to the Registration Statement (Form S-1 No. 333-134311) and related prospectus of ImaRx Therapeutics, Inc. for the registration of shares of its common stock. /s/ Ernst & Young LLP Phoenix, Arizona August 30, 2006