What is the fine-grained topic of the following text: This book “Practical Guidance on Peptide Receptor Radionuclide Therapy (PRRNT) for Neuroendocrine Tumours” is a milestone providing a comprehensive multi-disciplinary guidance to promote the standardized, effective and safe implementation of best practices for the treating of Neuroendocrine and Gastro-Entero-Pancreatic (GEP) tumours applying PRRNT either alone or in combination with other treatment options while taking into consideration most recent International classification of Neuroendocrine tumours. Only return the topic.
"Practical Guidance on Peptide Receptor Radionuclide Therapy (PRRNT) for Neuroendocrine Tumours"