Document Type: Review Article
Research Institute for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran
Widespread studies on tumor diagnosis has led to the development of techniques with greater sensitivity and improved specificity for detection of occult and small subclinical tumors. Tumor imaging by radiolabeling of tumor-specific antibodies (Immunoscintigraphy) or tissue specific biochemical agents (Receptor imaging) and especially physiologic imaging with positron emitters (PET), have opened a new era in nuclear medicine. In this paper the latest developments in tumor imaging are reviewed.