Abstract. van Bommel EFH, Siemes C, van der Veer SJ, Han SH, Huiskes AWLC, Hendriksz TR (Albert Schweitzer Hospital, Dordrecht, The Netherlands). Clinical value of gallium-67 SPECT scintigraphy in the diagnostic and therapeutic evaluation of retroperitoneal fibrosis: a prospective study. J Intern Med 2007; 262: 224-234.Background. Gallium-67 ( 67 Ga) scintigraphy may be useful in evaluating patients with retroperitoneal fibrosis (RPF), but a systematic assessment of its value is lacking.