School of Medicine
Showing 101-177 of 177 Results
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Vivek Maradia
Postdoctoral Scholar, Radiation Therapy
Current Research and Scholarly InterestsI research ultra-high dose rate delivery using proton, x-ray, and electron beams for FLASH preclinical studies, aiming to understand efficacy and safety mechanisms. My work aims to transform cancer therapy and enhance patient outcomes. Leveraging insights from PSI's PROScan facility, I design a compact cyclotron-based proton therapy infrastructure for various radiation therapy setups.
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Carol Marquez, MD
Clinical Professor, Radiation Oncology - Radiation Therapy
BioDr. Marquez is a radiation oncologist and the medical director of the Stanford Cancer Center in South Bay. She has board certification in therapeutic radiology and completed fellowship training in the use of radioimmunotherapy and radiosensitizers.
Dr. Marquez educates future specialists in her position as a clinical professor in the Department of Radiation Oncology at Stanford University School of Medicine.
In her clinical practice, she specializes in breast cancer, but treats a broad spectrum of cancers including prostate, lung, colon, lymphoma, and brain tumors. For each patient, she develops a comprehensive, compassionate care plan customized to individual needs. Her goal is to deliver the most effective cancer treatment to help patients enjoy the best possible health and quality of life.
Dr. Marquez has conducted research and published numerous articles in peer-reviewed journals: Clinical Cancer Research, Annals of Surgical Oncology, the Journal of Women’s Health, and others. Topics include innovations in surgical decision-making, advanced treatment of prostate cancer, and the effectiveness of stereotactic body radiation therapy (SBRT) in treating larger brain tumors.
She also wrote the chapter on pediatric radiation therapy for the Textbook of Clinical Pediatrics.
She has made presentations to her peers at the annual meeting of the American Society for Therapeutic Radiology (ASTRO) and at the annual Radiation Oncology Conference. Topics include radiation therapy after a mastectomy and advanced management of cancer of the central nervous system
She received a grant to examine the recruitment and retention of minority patients in cancer research. The National Cancer Institute sponsored the study.
Dr. Marquez is a member of the American Society for Therapeutic Radiology, American College of Radiology (ACR), and Society for Neurologic Oncology (SNO). She is a Fellow of the American College of Radiology (FACR).
She participates on multiple committees in the Stanford School of Medicine Clinical Educator Program. She also serves as a radiation oncology expert on the Global Online Breast Tumor Board. This board is sponsored by Massachusetts General Hospital and meets monthly to provide real-time expert opinions for breast cancer cases from cancer centers across the world, including Brazil, Poland, and the Philippines. -
Andrew Philip Martella
Clinical Associate Professor, Radiation Oncology - Radiation Therapy
BioDr. Martella is a fellowship-trained radiation oncologist and a clinical assistant professor of radiation oncology at Stanford University School of Medicine.
His clinical interests include gynecologic, breast, thoracic, gastrointestinal, genitourinary, and central nervous system cancers. His experience encompasses the full range of radiotherapy techniques, including intensity modulated radiation therapy (IMRT), volumetric modulated arc therapy (VMAT), stereotactic body radiotherapy (SBRT), CyberKnife radiosurgery, eye plaque brachytherapy, and prostate and gynecologic high dose rate (HDR) brachytherapy.
Dr. Martella is dedicated to improving the quality of care and the patient experience. He deeply values a close relationship with his patients and their loved ones. He feels that each patient experiences healthcare in a unique and individual way. By recognizing and responding to those individual needs Dr. Martella provides a truly patient-centered experience. He has helped conduct research into noninvasive deep brain stimulation and chromosomal topography,and published on the topic of treating rectal cancer without radiation. He also was the primary contributing author of chapters in the book First Aid for the United States Medical Licensing Examination.
Dr. Martella has delivered presentations at the Annual Meeting of the American Society for Therapeutic Radiology and Oncology. Topics include chemotherapy and radiotherapy in endometrial cancer.
Among the honors for scholarship that Dr. Martella has received, he graduated first in his class at Duke University School of Medicine. He was also elected during medical school into Alpha Omega Alpha Honor Medical Society.
Dr. Martella’s community service has included a position on the board of directors of Camp Good Days and Special Times, a nonprofit organization that provides services for children who have cancer, have a parent or sibling with cancer, or have lost a parent or sibling to the disease. He has served on several leadership roles and has a deep dedication to furthering diversity and inclusion throughout the healthcare system. -
Stavros Melemenidis
Affiliate, Radiation Oncology - Radiation Therapy
BioWith a foundation in physics and radiation biology, my academic journey has been dedicated to mastering the complex interactions between various forms of radiation and their applications across the breadth of imaging techniques. My expertise extends to the design and execution of primary and metastatic mouse-tumor models, instrumental in advancing early disease detection and therapeutic innovation. I am highly skilled in the nuanced field of in vivo contrast-enhanced molecular imaging, utilizing an array of imaging modalities, and in assisting image-guided radiation therapies. My early research was pivotal in creating contrast agents for molecular imaging probes, specifically targeting markers in endothelial cells of primary and metastatic tumors. In the recent phase of my career, I have turned my attention to ultra-high dose rate (FLASH) irradiation technology for preclinical therapy. Through comprehensive research and experimentation, I have been at the forefront of configuring linear accelerators for optimal FLASH radiation delivery, a technique that promises to revolutionize cancer treatment by minimizing harm to healthy tissue while effectively targeting tumor cells. My investigative work has not only illuminated the underlying radiobiological principles of the FLASH effect but has also been pivotal in developing and fine-tuning specific in vivo irradiation strategies. This includes the meticulous engineering of mouse shields and collimators for anatomy-specific radiation delivery and the design and fabrication of dosimetric phantoms and protocols that ensure precise and reliable dosimetry.
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Lynn Million
Clinical Professor, Radiation Oncology - Radiation Therapy
BioLynn Million specializes in the treatment of cancer. She has practiced Radiation Oncology for more than 30 years. Dr. Million has a special interest in the treatment of sarcoma’s of soft tissue, bone and cartilage in children, young adolescents and adults.
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Everett J. Moding, MD, PhD
Assistant Professor of Radiation Oncology (Radiation Therapy)
Current Research and Scholarly InterestsMy laboratory performs translational research using analysis of human samples to identify critical mediators of treatment resistance that can be validated in preclinical models and targeted to enhance the efficacy of cancer therapy.
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Sakib Mostafa
Postdoctoral Scholar, Radiation Physics
BioI am a Postdoctoral Research Fellow at Stanford University with a background in computational genomics and deep learning. My research focuses on developing AI-powered tools for genomic analysis, with a particular interest in cancer classification, pangenomes, and genotype imputation. Previously, I worked as a Research Officer at the National Research Council of Canada, contributing to large-scale sequencing projects and machine learning interfaces for biologists. I am passionate about bridging domain biology with cutting-edge computational methods to solve complex biological questions and drive innovation in precision agriculture and healthcare.
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Prithvi Mruthyunjaya, MD, MHS
Alan Adler Professor of Ophthalmology and Professor, by courtesy, of Radiation Oncology
Current Research and Scholarly InterestsDr Mruthyunjaya has maintained a broad research interest with publications in both ocular oncology and retinal diseases.
His focus is on multi-modal imaging of ocular tumors and understanding imaging clues that may predict vision loss after ocular radiation therapy. He coordinates multi-center research on the role of genetic testing and outcomes of treatments of ocular melanoma.
In the field of retinal diseases, his interests are in intra-operative imaging to enhance surgical accuracy. -
Rohollah Nasiri
Postdoctoral Scholar, Radiation Physics
Current Research and Scholarly InterestsMy current research focuses on developing tumor-on-a-chip models for preclinical radiation therapy research.
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Jinghong Penny Peng
Clinical Instructor, Radiation Oncology - Radiation Physics
Current Research and Scholarly Interests1. IMRT Treatment planning
2. IGRT Radiation Therapy
3. Real time prostate implant
4. 4D CT and Respiratory Gating Radiation Therapy
5. HDR for breast cancer and GYN cancer
6. Xoft Electronic Brachytherapy -
Guillem Pratx
Associate Professor of Radiation Oncology (Radiation Physics)
Current Research and Scholarly InterestsThe Physical Oncology Lab is interested in making a lasting impact on translational cancer research by building novel physical tools and methods.
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Yushen Qian, MD
Clinical Associate Professor, Radiation Oncology - Radiation Therapy
BioDr. Qian is a board-certified radiation oncologist and a Clinical Associate Professor in the Stanford University School of Medicine, Department of Radiation Oncology.
In his clinical practice, he sub-specializes in genitourinary (including prostate and bladder cancer) and Head and Neck malignancies, but also treats a broad spectrum of other disease subsites including lung/thoracic, gastrointestinal, brain, lymphoma, and breast tumors. For each patient, he develops a comprehensive, individualized, and compassionate care plan customized to individual needs. His goal is to deliver the most effective cancer treatment to help patients enjoy the best possible health and quality of life.
In addition to his clinical practice, Dr. Qian serves as the Medical Director of Radiation Oncology at Stanford South Bay Cancer Center. He also serves as the Radiation Oncology Network Director of Clinical Research and has spearheaded opening of multiple NRG Oncology clinical trials at Stanford South Bay Cancer Center.
Dr. Qian is also actively involved in the Stanford Radiation Oncology residency program. He created and oversees a monthly mentorship roundtable series to assist residents with multiple aspects of their clinical training and career progression.
Outside of work, Dr. Qian enjoys spending time with his family and exploring the great outdoors of Northern California. -
Elham Rahimy, MD
Clinical Assistant Professor, Radiation Oncology - Radiation Therapy
BioDr. Rahimy is a radiation oncologist who treats patients with brain, spine, gastrointestinal, and metastatic tumors. She received her medical training at Yale, followed by residency at Stanford. She is a Clinical Assistant Professor with the Stanford Department of Radiation Oncology.
Dr. Rahimy's technical expertise includes CyberKnife Radiosurgery and MRI-guided adaptive planning. She is also actively involved in radiation oncology research and clinical trials. Her interests include improving patient and resident education, and enhancing patient quality of life and survivorship. She leads quality initiatives as a Quality Physician Improvement Leader, and serves as the Medical Student Clerkship Director. -
Jason B. Ross, MD, PhD
Assistant Professor of Radiation Oncology (Radiation Therapy)
Current Research and Scholarly InterestsMy laboratory studies studying normal, dysfunctional, and malignant stem cells in the context of aging, cancer, and cancer therapies.
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Mohammad Shahrokh Esfahani
Assistant Professor of Radiation Oncology (Radiation and Cancer Biology)
BioWith a primary focus on high-dimensional data, I have significant expertise in developing machine learning tools. Much of my work involves constructing Bayesian models, which effectively convert 'prior knowledge', either inherent in the dataset or obtained from external sources, into mathematical terms—more specifically, prior probabilities.
My recent research efforts have centered on the analysis of genetic and epigenetic signals within cell-free DNA assays. This interest in epigenetics led to the development of a pioneering technique known as EPIC-seq, which has broadened our understanding of this complex field.
It's notable that traditional computational methods in cancer genomics often fall short when confronted with an exceedingly low signal-to-noise ratio—a common scenario in cfDNA analyses. As such, there's an emerging need to devise innovative, robust methods capable of overcoming this limitation—a research area that I'm deeply committed to and actively engaged in. -
Junming Seraphina Shi
Postdoctoral Scholar, Radiation Biology
BioI am a postdoctoral fellow at Stanford University, jointly mentored by Dr. Mohammad Shahrokh Esfahani and Dr. Md Tauhidul Islam. My research focuses on developing robust statistical machine learning methods for noninvasive, cost-effective cancer diagnostics, with applications in early detection, treatment monitoring, and precision oncology.
I received my Ph.D. from UC Berkeley, where my dissertation centered on advancing biostatistical machine learning approaches for complex biomedical challenges. My work addressed causal inference for continuous treatments, bias and measurement patterns in ICU electronic health records, and deep learning–based biclustering and prediction of cancer-drug responses. Across these projects, I developed interpretable and scalable tools for analyzing high-dimensional, multimodal clinical data.
At Stanford, I continue to build novel statistical learning frameworks tailored to real-world clinical needs—particularly through the analysis of liquid biopsy (cell-free DNA) and cancer imaging data. My current work aims to improve cancer detection and monitoring, with a focus on noninvasive, accessible, and clinically meaningful solutions to pressing challenges in oncology. I enjoy interdisciplinary collaborations and working across fields to drive innovation in biomedical research. Deeply committed to cancer research, I aim to bridge rigorous computational methodology with patient-centered impact by designing tools that are scalable, equitable, and translational. -
Lawrie Skinner
Clinical Associate Professor, Radiation Oncology - Radiation Physics
BioLawrie Skinner, PhD DABR is a therapeutic medical physicist with clinical expertise in external beam radiation therapy, including advanced motion management techniques and MRI-guided radiation therapy.
Research interests generally revolve around developing novel devices for advanced clinical practice. Examples include personalized 3D printed electron beam collimators, rotating couch overlays for total body radiation therapy, and radiotransparent audio visual communication and immersion displays.
Dr skinner also has a research background in synchrotron x-ray scattering, neutron scattering, molecular dynamics and Monte Carlo computational modelling. -
Scott G. Soltys, MD
Professor of Radiation Oncology (Radiation Therapy) and, by courtesy, of Neurosurgery
Current Research and Scholarly InterestsMy clinical and research interests focus on the development of new radiation techniques involving stereotactic radiosurgery and radiotherapy for the treatment of malignant and benign tumors of the brain and spine, as well as functional disorders such as trigeminal neuralgia.
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Gregory Arthur Szalkowski
Clinical Assistant Professor, Radiation Oncology - Radiation Physics
Current Research and Scholarly InterestsWorkflow automation, radiotherapy quality assurance, machine learning
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Nicholas Trakul, MD, PhD
Clinical Associate Professor, Radiation Oncology - Radiation Therapy
BioDr. Nicholas Trakul is a radiation oncologist with Stanford Medicine Cancer Center and clinical associate professor of Radiation Oncology-Radiation Therapy with Stanford School of Medicine. Dr. Trakul serves as Medical Director for Stanford Medicine Radiation Oncology in Pleasanton and for the Stanford Medicine I Sutter Health Cancer Collaborative in Castro Valley.
Dr. Trakul completed residency training at Stanford in 2013 and then joined the faculty at the University of Southern California, where he specialized in head and neck and central nervous system malignancies, with an emphasis on stereotactic radiosurgery (SRS) and stereotactic ablative radiotherapy (SABR/SBRT). He is widely published as first author in peer-reviewed journals. His research focus involves the creation of novel clinical databases as well as outcomes in the treatment of head and neck, gastrointestinal and thoracic malignancies. In 2017, Dr. Trakul returned to Stanford Medicine, becoming the Medical Director of Stanford Medicine Radiation Oncology in Pleasanton. In 2020, he was named Medical Director of Stanford Radiation Oncology Network Sites. Dr. Trakul served as medical directorship of Eden Radiation Oncology Center from 2022 to 2023, the first site to become operation under the Stanford/Sutter Cancer Collaborative. In 2024, he was named Vice Chair and Director of the Radiation Oncology Network. In November of 2024, Dr. Trakul was named Medical Director of Alta Bates Herrick Radiation Oncology. He is focused on providing access to high quality radiation therapy, collaboration with community health care systems and creating/maintaining productive and high engagement workplace culture. He believes in providing personalized, high-quality care, and bringing new technology to the East Bay, allowing patients to access cancer care while staying connected to their communities and support networks. -
Lucas Kas Vitzthum, MD
Clinical Associate Professor, Radiation Oncology - Radiation Therapy
BioDr. Vitzthum is a radiation oncologist and clinical associate professor of radiation oncology at Stanford University School of Medicine. He specializes in the treatment of gastrointestinal and thoracic cancers. He also has a clinical and research interest in oligometastatic cancer, which is cancer that has metastasized to a limited number of sites beyond its origin.
He began his career in biomedical engineering and is passionate about integrating new technologies to advance patient care.
Dr. Vitzthum delivers treatment personalized to each patient’s condition, overall health, and goals. He believes clear communication between doctor and patient is vital to help patients make informed care decisions.
His research interests include clinical trial development, survivorship, and predictive modeling to personalize patient treatment. He is especially interested in pursuing research that can address unmet clinical needs.
Dr. Vitzthum has received research support through the Radiological Society of North America, the American Society of Clinical Oncology’s Conquer Cancer Foundation, and the UCSD Altman Clinical and Translational Research Institute. His work has appeared in International Journal of Radiation Oncology Biology Physics, Annals of Oncology, JAMA Oncology, Clinical Cancer Research, and other publications.
He is a member of the American College of Radiation Oncology, American Society for Radiation Oncology, American Society of Clinical Oncology, and Radiologic Society of North America.
Dr. Vitzthum is also interested in improving access to high-quality cancer care for under-served populations domestically and abroad. -
Lei Wang
Clinical Professor, Radiation Oncology - Radiation Physics
BioLei Wang, PHD, DABR, is a clinical professor in the Department of Radiation Oncology at Stanford, motivated in advancing patient quality of care, improving education for residents and trainees, and conducting clinical research to improve the quality and accuracy in treatment delivery. She is an expert in CyberKnife SRS/SBRT with more than 15 years of experiences. She currently serves as the chair of the AAPM task group 135.B committee on quality assurance for robotic radiosurgery.
Research interest: small field dosimety, machine and patient quality assurance, treatment planning, etc; new QA tool and methodology development; new treatment technology implementation to keeping high standard in patient care. -
Mengxiong Wang
Postdoctoral Scholar, Radiation Biology
Current Research and Scholarly Interests1. To investigate the role of p53 in regulating the regression of lung adenocarcinoma and tumor microenvironment.
2. To determine synthetic lethal partner for p53 mutations in the context of lung adenocarcinoma. -
Ziwei Wang
Postdoctoral Scholar, Radiation Therapy
Current Research and Scholarly InterestsMy current work focuses on establishing preclinical platforms to rapidly validate the functional impact of genetic alterations in tumors using both cell and genetically engineered mouse models. We hope this system can accelerate the discovery and translation of novel cancer therapies to patients.
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Fang Wu
Affiliate, Radiation Oncology - Radiation Physics
Visiting Scholar, Radiation Oncology - Radiation PhysicsBioChief Physician and Professor, The Second Xiangya Hospital of Central South University, China
National Excellent Young Physician, China
President, Association of Stanford Chinese Visiting Physicians
President, Association of Chinese Visiting Physicians in America
Dr. Wu focuses on clinical and translational research in lung cancer. She has demonstrated that emotional distress is strongly associated with resistance to immunotherapy in lung cancer. As a corresponding author, Dr. Wu has published over 30 articles in Nature Medicine and other leading international journals. She has been invited to deliver oral and featured presentations at major international conferences, including ASCO, ESMO, and WCLC.
Dr. Wu currently serves as a member of the Staging and Prognostic Factors Committee of the International Association for the Study of Lung Cancer (IASLC), the Youth Committee of the Oncology Branch of the Chinese Medical Association (CMA), the Youth Committee of the Chinese Society of Clinical Oncology (CSCO), and the Multidisciplinary Oncology Committee of the Chinese Medical Doctor Association (CMDA). -
Jinxi Xiang
Postdoctoral Scholar, Radiation Physics
Current Research and Scholarly InterestsI develop machine leanring methods to autonomate the digital pathology.
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Lei Xing
Jacob Haimson and Sarah S. Donaldson Professor and Professor, by courtesy, of Electrical Engineering
Current Research and Scholarly Interestsartificial intelligence in medicine, medical imaging, Image-guided intervention, molecular imaging, biology guided radiation therapy (BGRT), treatment plan optimization
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Xiaohan Xing
Postdoctoral Scholar, Radiation Physics
BioXiaohan Xing is a Postdoctoral researcher at the Department of Radiation Oncology, Stanford University. Before joining Stanford, she worked as a Postdoctoral researcher at the City University of Hong Kong. She obtained her Ph.D. degree from The Chinese University of Hong Kong in 2021 and her B.S. degree from Shandong University in 2017.
Her research interests include medical image analysis, omics data analysis, and multi-modal based disease diagnosis. -
Jiangbin Ye
Assistant Professor of Radiation Oncology
Current Research and Scholarly InterestsOne hallmark of cancer is that malignant cells modulate metabolic pathways to promote cancer progression. My professional interest is to investigate the causes and consequences of the abnormal metabolic phenotypes of cancer cells in response to microenvironmental stresses such as hypoxia and nutrient deprivation, with the prospect that therapeutic approaches might be developed to target these metabolic pathways to improve cancer treatment.
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Sandra Zaky
Clinical Associate Professor, Radiation Oncology - Radiation Therapy
BioDr. Zaky is a board certified Radiation Oncologist. She received a Bachelor’s of Science in Biomedical/Electrical Engineering at Marquette University. She worked in research and development as an Engineer, and eventually received a Masters of Science in Immunology from Albany Medical College. Her research thesis focused on a novel therapy to treat hormone-receptor positive breast cancer. She continued to study breast cancer with her research during her Radiation Oncology residency; she integrated her research in the laboratory with her clinical research in triple-negative breast cancer. Since completing residency, she has worked as a general radiation oncologist, and her special interests include breast cancer, skin cancer, CNS tumors and stereotactic radiotherapy.
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Xiaoxu Zhong
Postdoctoral Scholar, Radiation Physics
BioXiaoxu is a postdoctoral scholar in the Guillem Pratx Lab. He earned his Bachelor of Science and Master of Science degrees in Ocean Engineering from Shanghai Jiao Tong University. His Ph.D. in Mechanical Engineering from Purdue University focused on mathematical modeling for spring-driven autoinjectors and cavitation bubbles. Currently, He is investigating the physical process by which ionizing radiation nucleates nano-sized bubbles.
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Zixia Zhou
Postdoctoral Scholar, Radiation Physics
BioZixia Zhou is a postdoctoral researcher at Department of Radiation Oncology, Stanford University. Before starting her postdoc, she received a Ph.D. degree in Biomedical Engineering in 2021 from Fudan University. She is interested in improving medical imaging quality in cost-effective manners with artificial intelligence. Broadly, her research focuses on high spatio-temporal ultrasound image reconstruction and high-dimensional data reduction and visualization.
