Value of Peptide Receptor Scintigraphy Using ¹²³I-Vasoactive Intestinal Peptide and ¹¹¹In-DTPA-D-Phe1-Octreotide in 194 Carcinoid Patients: Vienna University Experience, 1993 to 1998

Abstract

Both peptide tracers have a high sensitivity for localizing tumor sites in patients with ascertained or suspected carcinoid tumors, with (111)In-DTPA-D-Phe(1)-OCT scintigraphy being more sensitive than (123)I-VIP receptor scanning. Both, however, had a higher diagnostic yield than conventional imaging, as verified by surgical intervention or long-term follow-up. The combination of both peptide receptor scans does not seem to further enhance diagnostic information.