Current Trainees

Joshua de Bever 
mentors: Brian Rutt and Sam Gambhir

Joshua de Bever earned a BS (honors) with a double major in Physics and Computer Science in 2005 and an MS in Physics in 2007 from the University of Western Ontario. While completing his Master’s degree, he designed and fabricated high performance MRI gradient coils. Dr. de Bever earned his PhD from the University of Utah where he performed research in Medical Robotics as part of the MR-guided focused ultrasound group. With this team, Dr. de Bever helped bring a focused ultrasound device for treating breast cancer to clinical trials. His dissertation research included the development of a novel adaptive model-predictive controller for thermal ablation of cancer using focused ultrasound and MR temperature imaging feedback, as well as multiple 3D MR acoustic radiation force imaging techniques. Dr. de Bever will be a postdoctoral scholar in Professor Brian Rutt’s laboratory and is pursuing research into thermal cancer therapies in a high-field MRI environment.

Hamed Arami 
mentors: Sam Gambhir and Robert Sinclair

Hamed Arami will receive his Dual PhD in December, 2015 in Materials Science and Engineering (MSE) and Nanotechnology and Molecular Engineering (NTME) from the University of Washington (UW) in 2015. His research interests are development of advanced biomaterials (nanoparticles, hydrogels and scaffolds) for biomedical imaging, targeted therapy, tissue engineering and regenerative medicine. His PhD research was aimed at the development of multifunctional nanoparticle tracers for a new imaging technique called Magnetic Particle Imaging (MPI) and their applications in cancer diagnosis and cardiovascular imaging. Combining MPI with other imaging modalities, such as Magnetic Resonance Imaging (MRI) and Near Infra-Red Fluorescent (NIRF) imaging, he also studied immune response, pharmacokinetics and biodistribution of these nanoparticles and developed chemical approaches to prolong the blood circulation half-life of the MPI tracers in animal models. During his SCIT fellowship, he will work in Prof. Gambhir’s lab to study the role of cancer stem cells on tumors drug resistance and recurrence using intravital microscopy. He also uses iron oxide nanoparticles for targeted differentiation therapy of the cancer stem cells and uses magnetic and fluorescent imaging techniques to track the nanoparticles in animal models.

Subashini Srinivasan 
mentors: Brian Hargreaves and Bruce Daniel
(9/1/2015 - 8/31/2017)

Dr. Srinivasan is a post-doctoral fellow in Dr. Brain Hargreaves’ lab in the Department of Radiology at Stanford University. Her current research projects are focussed on improving the specificity of breast cancer detection using pharmaco-kinectic modeling and MR guided augmented reality for breast conserving surgery. 

Suba earned her PhD in Biomedical Engineering at University of California, Los Angeles. Her PhD thesis developed novel variable flip angle balanced SSFP techniques for fast 3D T2 weighted prostate MRI as well as to reduce the SAR of free-breathing cardiac cine imaging. Suba was previously a Research Intern at Siemens Corporate Research, where she developed an MRI pulse sequence for real-time, low specific absorption rate, off-resonance insensitive T2 weighted imaging. Suba received her Master of Science in Biomedical Engineering from ETH Zurich. For her Master's thesis, Suba developed a novel 3D black blood imaging technique for better visualization of the cardiac chambers at Harvard Medical School (BIDMC). Her research interests include physics, imaging, and reconstruction techniques of Magnetic Resonance Imaging (MRI).

Siavash Yousefi
mentors: Lei Xing and Juergen Willmann
(9/1/2015 - 8/31/2017)

Dr. Yousefi received his BS, MSc and PhD all in electrical engineering from University of Tehran (2006), Oregon State University (2008) and University of Washington (2014), respectively. His research was conducted in the field of Optical Coherence Tomography (OCT) imaging where he developed tools for cellular-level imaging of microcirculatory environment in vivo. He also earned certificate degrees in Medical Imaging (Radiology) and Technology Entrepreneurship (Foster School of Business) from University of Washington.
Since September 2014, he has been a postdoctoral research fellow in the Medical Physics branch of Stanford Radiation Oncology working with professor Lei Xing. He is currently conducting research in the early cancer diagnosis and image guided cancer therapy monitoring. At Stanford Cancer Imaging Training (SCIT) program, he will be conducting research to develop acoustic range verification technique for localization of the Bragg peak during proton beam cancer therapy. 

Ryan Spitler
mentors: Chris Contag, Brian Rutt, Heike Daldrup-Link
(9/1/2014 - 8/31/2016)

Dr. Spitler received his BS from the University of California Santa Cruz in Molecular Cell and Developmental Biology in 2007. His research was in the area of structural biology. Additionally, he has over ten years of industry experience in biotechnology, molecular imaging and therapeutics. He earned his PhD in Cellular and Developmental Biology from University of California Irvine in 2014. His research was conducted at the Beckman Laser Institute Medical clinic focusing on multimodal wound healing therapeutics utilizing pharmacological and biophotonic-based approaches. He is currently a postdoctoral research fellow in Professor Christopher Contag’s lab in the department of Pediatrics at Stanford school of medicine. His research is on the development of the newly created nanoplatform technology magnetogenetics using synthetic biological systems. He will focus on tumor ablation techniques using low frequency alternating magnetic fields and magnetic nanoparticles derived from genetically engineered organisms. He is also optimizing this system for high-resolution magnetic resonance imaging.

Mehmet Gunhan Ertosun
mentors: Craig Levin and Daniel Rubin
(2/21/2014 - 2/20/2016)

Dr. Ertosun graduated from Bilkent University with a BS degree in Electrical & Electronics Engineering in 2004. During his undergraduate studies at Bilkent, he conducted research in the fields of optics and signal processing. He received an MS degree in Electrical Engineering from Stanford University in 2006, where his research focused on optoelectronic & semiconductor devices. He received a second MS degree in Financial Mathematics from Stanford in 2009.

In 2010, he earned his PhD degree from Electrical Engineering department of Stanford University. His PhD research focused on novel single-transistor dynamic random-access memory technologies.

Between 2010 and 2012, he worked as a Senior Member of Technical Staff -- Research Engineer in the industry, and conducted research in the field of novel & emerging memory technologies.

In 2012, he joined the Molecular Imaging Instrumentation Laboratory at Stanford School of Medicine as a postdoctoral scholar. His current research interests include development, modeling and simulation of novel medical imaging technologies, with a special interest in photon-counting CT technology with aspects ranging from semiconductor-level novel detector studies to quantitative imaging and biomedical informatics studies.

Saeid Zanganeh, PhD
mentors: Heike Daldrup-Link and Michael Moseley
(2/24/2014 - 2/23/2016)

Dr. Saeid Zanganeh earned his PhD in Biomedical Engineering from University of Connecticut, USA, in 2014. His thesis focused on developing micro and nanoscale technologies with particular emphasis in developing nanoscale engineering systems for targeting tumor hypoxia and tumor angiogenesis. He is now a postdoctoral research fellow in Dr. Heike Daldrup-Link's laboratory in the department of radiology at Stanford school of medicine. His current research interests include development of cancer detection and therapy through cellular imaging techniques by means of theranostic nanoparticles for magnetic resonance imaging.