Lei Xing Lab In the Department of Radiation Oncology

Current Members

Principal Investigator

Lei Xing, Ph.D., Jacob Haimson Professor, DABR
Director of Physics Division
Diplomate, American Board of Radiology

Department of Radiation Oncology
Stanford University School of Medicine
875 Blake Wilbur Drive, Room G233
Stanford, CA 94305-5847
Phone: 650-498-7896
Fax: 650-498-4015

Professor of Electrical Engineering  (courtesy)
David Packard Building
350 Serra Mall
Stanford, CA  94305

Professor of Biomedical Informatics Program (courtesy)
Medical School Office Building (MSOB), room X- 215, 1265 Welch Road
Mail Code: 94305-5479

Core faculty of Molecular Imaging Program at Stanford (MIPS)
Stanford Bio-X Program

Stanford Cancer Institute

Prof. Xing obtained his Ph.D. in physics at John Hopkins University.  He joined Stanford as a faculty member in 1997. Prof. Xing has published more than 160 refereed papers. Prof. Xing has broad research interests, including medical imaging, molecular imaging, image segmentation and registration, radiation therapy treatment planning, real-time image guidance and decision-making strategies in radiation therapy, internet medicine.  More »

Postdoctoral Fellows

Moiz Ahmad, Ph.D., Postdoctoral Fellow
Phone: (650) 724-8288
Email »

I am designing instrumentation for high sensitivity x-ray fluorescence imaging. This imaging method acquires an x-ray signal that is specific to a nano-particle. These nano-particles are conjugated with ligands specifically targeting disease, This molecular imaging method can image the molecular markers of disease deep in tissue without using expensive radiopharmaceuticals.

Dengwang Li, Ph.D., Postdoctoral Fellow
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Michael Sano, Ph.D., Postdoctoral Fellow
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Olga Volotskova, Ph.D., Postdoctoral Fellow
Email »

My research is focused on utilization of Cerenkov radiation for clinical use: tumor and lymph node imaging and dosimetry. Cerenkov radiation is produced when charged particles travel through a medium faster than the speed of light in that medium. The bottleneck problem encountered in harnessing this phenomena is that the Cerenkov signal contains mainly photons in blue and ultraviolet regions, which can only penetrate a few millimeters of tissue. Cerenkov Radiation Energy Transfer (CRET) from V/UV into R/IR wavelengths can be optically detected with novel nanoprobes (q-dots and gold nano-clusters) allowing to achieve substantially improved signal detection.

Raiyan Zaman, Ph.D., Postdoctoral Fellow
Email »

My research interests are focused on developing affordable biomedical optical imaging systems. Therefore, my long term objectives aim to develop optical technologies for early diagnosis using molecular markers and treatment of atherosclerotic plaque. My research emphasizes three main areas: (1) imaging mechanisms, (2) technology development, and (3) translational research. This is a collaborative effort between the Division of Radiation Physics and Cardiovascular Medicine to develop minimally invasive optical imaging technologies. My current research project focuses on the improvement of the characterization of atherosclerotic plaques within the coronary arteries, using a dual-modality intravascular molecular optical imaging system to detect glucose uptake.

Masoud Zarepisheh, Ph.D., Postdoctoral Fellow
Email »

My current research is the development of mathematical models and optimization techniques to optimize the LINAC configuration parameters (such as beam energy, aperture shape and weight, gantry/collimator angle, couch position, and isocenter) for radiotherapy treatment planning.


Ruud Vinke, Ph.D., Postdoctoral Fellow
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Don Vernekohl, Ph.D., Postdoctoral Fellow
Email »

Don is working on the next generation of dosimetry detectors build from diamondoid and nano-diamonds. He studied at the University of Münster and CERN where he worked on detector development and instrumentation. Beyond diamond detectors, he is interested in preclinical PET detectors based on semi-conductor and gas detectors as well as applications in high energy physics and radiation therapy.




Siavash Yousefi, Ph.D., Postdoctoral Fellow
Email »







Cesare Jenkins, Ph.D. Candidate
Department of Mechanical Engineering
Email »

Cesare is working on a project to develop tools to track radiation therapy in real time. The project aims to improve patient safety while providing additional treatment delivery validation information to clinicians. Additionally, he collaborates with others in the lab on the development of x-ray florescence computed tomography (XFCT), a novel molecular imaging modality

Henry Wang, Ph.D. Candidate
Department of Electrical Engineering
Email »

Henry Wang is currently a Ph.D. candidate in Electrical Engineering at Stanford University, working under the guidance of Professor Xing. His current research involves knowledge based treatment planning and optimization. He is developing a fully automated treatment planning platform. His past research includes applying cloud computing to monte carlo in radiotherapy. Working with new ideas and producing useful yet simple implementations are truly meaningful for him. He hopes to utilize his engineering background and one day make a groundbreaking contribution to medical physics.

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