I am an American Board of Nuclear Medicine certified physician. My special interest is in the clinical application of PET in cancer diagnosis and neurological applications, such as Alzheimer’s disease.

My research interest is diagnosis and treatment of thyroid disease, including hyperthyroidism, thyroid cancer with metastases.


American Board of Nuclear Medicine, 2004
Certification Board of Nuclear Cardiology, 2005


Medical School
China Medical University, Shenyang, China, 1986
Surgery, SUNY Health Science Center, Brooklyn, NY, 2001
Internal Medicine, China Medical University, Shenyang, China, 1993
Anesthesiology, St. Louis University, St. Louis, MO, 2002
Nuclear Medicine, Memorial Sloan Kettering Cancer Center, NYC, NY, 2004
Nuclear Medicine, University of Washington, Seattle, WA, 2005

Areas of Interest

Research Interests

**Faculty profiles will only highlight current information (the last three years). Please see the faculty’s CV for more information.

  1. Co-Investigator, Sensitivity and specificity of I-124 FIAU PET-CT scanning in patients presenting with pain and loosening of a prosthetic knee or hip joint visible on plain X-ray. Sponsor: BioMed Valley Discoveries. Saha, Saurabh, MD. 04/2012-2017


**Faculty profiles will only highlight current information (the last three years). Please see the faculty’s CV for more information.



  1. I. Gayed, U. Joseph, L. Dawood, B. Desai and D. Wan: Improving Hepatobiliary Imaging as A Physiologic Test with Superior Clinical Outcomes. SNM annual meeting, J Nuclear Medicine. vol. 59. (Suppl 1): 1584, Philadelphia PA, May 2018
  2. U. Joseph, L. Dawood, D. Wan, and I. Gayed: Correlation of Quantitative Analysis and Focal Hypometabolism on FDG PET Scan to Cortical Resection of Seizure Focus in Refractory Epilepsy. J Nuclear Medicine, vol. 59. (Suppl 1): 1674, Philadelphia PA, May 2018
  3. V. S. Tammisetti, D. Q. Wan, H. Yang, S. Behr, A. Rosenkrantz, B. Turkbey: Pitfalls, Interpretative Criteria and Utility of F18-Flucicoline PET CT and Prostate MRI in Biochemically Recurrent Prostate Cancer – A Case Based Review. Abstract accepted, RSNA annual meeting, Chicago, IL 11/2018



  1. I. Gayed, R. Karni, D. Wan, J. Varghese, K. Wirfel, K. Won, U. Joseph: Interpretation of Tc-99m sestamibi parathyroid SPECT-CT scans made easy for better surgical outcomes in patients with primary hyperparathyroidism. Reports in Medical Imaging. Volume 10 1–7, 2017.
  2. I. Gayed, V. Salama, L. Dawood, S. Canfield, D. Wan, C. Cai, U. Joseph, R. Amato. Can bone scans guide therapy with radium-223 dichloride for prostate cancer bone metastases? Cancer Management and Research: 10, 3317–24, 2018.
  3. S. Calle, L. Dawood, N. Tripathee, C. Cai, H. Kaur, D Wan, H. Ibekwe, I. Gayed: Identification of patterns of abnormalities seen on DaTscan™ SPECT imaging in patients with non-Parkinson’s movement disorders. Reports in Medical Imaging. Volume 12, 9–15, 2019.



  1. D.Q. Wan, Advances in Functional Imaging in the Assessment of Head and Neck Cancer. Oral and Maxillofacial Surgery Clinics of North America, Pages 627-635 Nov. 2019.