Preoperative localisation of adenomas in primary hyperparathyroidism: the value of 11C-choline PET/CT in patients with negative or discordant ultrasonography and 99mTc-Sesta-MIBI-SPECT/CT

1. Department of Nuclear Medicine, Peking Union Medical College (PUMC) Hospital, Chinese Academy of Medical Science & PUMC 2. Department of Nuclear Medicine, Beijing Key Laboratory of Molecular Targeted Diagnosis and Therapy in Nuclear Medicine 3. Department of Surgery. Peking Union Medical College Hospital, Chinese Academy of Medical Science & PUMC 4. Department of Endocrine. Peking Union Medical College Hospital, Chinese Academy of Medical Science & PUMC 5. Department of Ultrasound; Peking Union Medical College Hospital, Chinese Academy of Medical Science & PUMC 6. Department of Pathology. Peking Union Medical College Hospital, Chinese Academy of Medical Science & PUMC 7. Division of Nuclear Medicine, Department of Biomedical Imaging and Image-guided Therapy. Medical University of Vienna, Vienna, Austria. 8. Department of Radiology and Nuclear Medicine, University Hospital Magdeburg, Magdeburg, Germany.