Abstract
Heterogeneity of estrogen receptor (ER) expression in breast cancer is recognized. However, knowledge about varying expression across metastases and surrounding normal tissue in patients is scarce. We therefore analyzed 16α- 18F-fluoro-17β-estradiol ( 18F-FES) PET to assess ER expression heterogeneity. Methods: 18F-FES PET on accredited PET/CT camera systems performed in patients
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