CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated March 12, 2026 with respect to the financial statements of Plus Therapeutics, Inc. for the year ended December 31, 2025 included in the Annual Report on Form 10-K.

/s/ CBIZ CPAs P.C.

New York, NY

June 18, 2026