Sadek Nehmeh Laboratory

Associated Lab Members

Sadek Nehmeh
View Bio
Sadek NehmehPh.D.
  • Associate Professor of Medical Physics in Radiology

Dr. Sadek Nehmeh is an associate professor of medical physics in radiology, and the section chief of positron emission tomography (PET) and nuclear physics, in the Weill Cornell Medicine (WCM) Department of Radiology. In 2000, Dr. Nehmeh began his career as a postdoc and resident fellow in medical physics at the Memorial Sloan Kettering Cancer Center (MSKCC). In 2003, while at MSKCC, he was appointed to assistant physicist; the following year, he was promoted to assistant attending; and in 2009, he was promoted to associate attending. In 2017, Dr. Nehmeh joined the WCM Department of Radiology.

Phelipi Nunes SchuckM.Sc
  • Staff Associate in Radiology

Lab Focus

Dr. Sadek Nehmeh has extensive experience in positron emission tomography (PET) physics, clinical PET imaging, and Monte Carlo simulations. His PET physics research focuses on Monte Carlo simulations of novel long axial field-of-view PET systems, application-specific PET systems for noninvasive imaging of the arterial input function, and Compton scatter PET. Clinically, Dr. Nehmeh’s research focuses on hypoxia imaging, simultaneous multi-tracer PET imaging in glioblastoma, PET imaging of multiple sclerosis, cardiac PET imaging, cardiac toxicity in cancer patients, and Alzheimer’s disease. He’s also focused on treatment response assessment in both cancer and neurology.  

The author of some 70 publications and book chapters, Dr. Nehmeh is the recipient of multiple National Institutes of Health (NIH) grants, industry-sponsored grants, and institutional funds. Additionally, he serves as co-investigator on numerous NIH awards. Dr. Nehmeh, an active member of the Institute of Electrical and Electronics Engineers (IEEE), Society of Nuclear Medicine and Molecular Imaging (SNMMI), and American Association of Physicists in Medicine (AAPM), is actively presenting his work at international and national conferences. The director of a Weill Cornell Medicine (WCM) medical imaging nuclear physics course, Dr. Nehmeh is certified by the American Board of Radiology (ABR) and licensed in medical nuclear physics by the state of New York.  


Mony de Leon, Ed.D.
Howard Fine, M.D.
Edward K. Fung, Ph.D.
Dr. Susan Gauthier, D.O., MPH.
Jana Ivanidze, M.D., Ph.D.
Moonsoo Jin, Sc.D.
Nikolaos A. Karakatsanis, Ph.D.
James Kelly, Ph.D.
Gene Kim, Ph.D.
Rajiv S. Magge, M.D.
Lisa Mosconi, Ph.D.
Theodore H. Schwartz, M.D.

Research Projects

By using 18 fluorodeoxyglucose (F)-labeled fluoromisonidazole (FMISO) PET imaging, Dr. Sadek Nehmeh assessed tumor hypoxia imaging in head-and-neck and lung cancer...

In breast cancer radiotherapy, the mean heart dose is currently 1–5 Gy. Exposures at these levels can cause ischemic heart disease that worsens within five years post-radiation, then continues into the third decade. Determining radiation-induced cardiac toxicity soon after...

Dr. Sadek Nehmeh’s work in respiratory motion correction in combined positron emission tomography (PET)/computed tomography (CT) images was the first worldwide. He developed multiple methodologies to correct for breathing-induced artifacts, and his work on motion correction in PET/CT was awarded research...

Positron emission tomography (PET) sensitivity and applications (in particular those requiring simultaneous imaging of distant organs) are hindered due to the scanner limited axial field-of-view (AFOV), typically <...

Weill Cornell Medicine
Department of Radiology
525 East 68th Street New York, NY 10065