1. Polak JM, Bloom SR. Regulatory peptides of the gastrointestinal and respiratory tracts. Arch Int Pharmacodyn Ther. 1986;280:16–49.
2. Wong F, Kim E. Peptide receptor imaging. In: Kim E, Yang D, editors. Targeted molecular imaging in oncology. New York: Springer; 2011. p. 102–10.
3. Hillel PG, van Beek EJ, Taylor C, Lorenz E, Bax ND, Prakash V, et al. The clinical impact of a combined gamma camera/CT imaging system on somatostatin receptor imaging of neuroendocrine tumours. Clin Radiol. 2006;61:579–87.
4. Perri M, Erba P, Volterrani D, Lazzeri E, Boni G, Grosso M, et al. Octreo-SPECT/CT imaging for accurate detection and localization of suspected neuroendocrine tumors. Q J Nucl Med Mol Imaging. 2008;52:323–33.
5. Kwekkeboom DJ, Krenning EP, Scheidhauer K, Lewington V, Lebtahi R, Grossman A, et al. ENETS consensus guidelines for the standards of care in neuroendocrine tumors: somatostatin receptor imaging with 111In-pentetreotide. Neuroendocrinology. 2009;90:184–9.