QuickLinks -- Click here to rapidly navigate through this document

Exhibit 23.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

        We have issued our report dated November 7, 2006, accompanying the consolidated financial statements of Accuray Incorporated contained in Amendment No. 1 to the Registration Statement (Form S-1 No. 333-138622) and Prospectus. We consent to the use of the aforementioned report in Amendment No. 1 to the Registration Statement and Prospectus, and to the use of our name as it appears under the caption "Experts."

/s/ Grant Thornton LLP

San Francisco, California
December 22, 2006

QuickLinks

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM