Molecular Imaging for Estrogen Receptor-Positive Breast Cancer: Clinical Applications of Whole Body and Dedicated Breast Positron Emission Tomography.

¹⁸ F-fluoroestradiol ( ¹⁸ F-FES) is a Food and Drug Administration-approved radiopharmaceutical used for molecular imaging of the estrogen receptor (ER). When combined with PET, ¹⁸ F-FES may improve the diagnosis of ER-positive breast cancer in the metastatic setting and provide insights into tumor heterogeneity. In this article, we review data on the use of ¹⁸ F-FES imaging for treatment selection, staging, imaging lobular breast cancer, and the novel breast specific imaging tool, dedicated breast PET.
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