Abstract
Imaging tests,including ultrasonography,computed tomography,and magnetic resonance imagery are very important and are used widely in the clinic to obtain a qualitative diagnosis and the location of ocular tumors.But these methods cannot determine the severity of malignant tumors and whether they have local or distant metastasis.Positron emission tomography/computed tomography (PET-CT) displays anatomic and metabolic abnormalities by combining the PET and CT imaging and analyzing the standard uptake value (SUV).PET-CT has been used in the diagnosis of choroidal melanoma,orbital lymphoma,orbital rhabdomyosarcoma and adenoid cystic carcinoma of the lacrimal gland.It provides a new diagnostic tool for confirming ocular tumors and systemic metastatic tumors originating from them. Key words: Positron-emission tomography ; Eye ; Neoplasms ; Neoplasm metastasis
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