D A V I D S . G R A F F P H . D . M E D I C A L PH Y S I C I S T

EDUCATION

2005 Columbia University New York, NY M.S. Medical Physics

1997 University of Michigan Ann Arbor, MI Ph.D. Astrophysics

1996 University of Michigan Ann Arbor, MI M.S. Statistical Physics

1990 University of Chicago Chicago, IL B.S. Mathematics

PROFESSIONAL EXPERIENCE: MEDICAL IMAGING PHYSICIST

2009 – Human Network Labs Philadelphia, PA Mathematics/Physics/Statistics Modeler • Scientific modeler for wireless localization technology. • Probed statistical behavior of MEMS sensors and wireless ranging systems. • Implemented Kalman Filters and Particle Filters to incorporate noisy correlated data. • Supervised three engineers.

2007 – 2009 Reading Hospital – Radiology Reading, PA Medical Imaging Physicist • First in-house imaging physicist at institution. Created and defined job. • Oversaw quality control of all radiation imaging systems. Identified and resolved problems in

SPECT, interventional radiology, and cardiology. • Reviewed all imaging protocols. Revised SPECT reconstruction algorithms and thyroid

collimator, pediatric CT dose techniques, interventional radiology high-skin-dose practices. • Developed detailed technical analysis for purchases, including interviews of radiologists and

referring physicians, researchers and designers. • Wrote computer programs to hand-reconstruct garbled 4DCT and SPECT images • Wrote computer programs to calculate peak skin dose for interventional cardiology patients • Provided well-received education lectures in imaging physics to technologists. • Analytic research in the mathematics of truncation artifacts in tomographic imaging

2005 – 2007 Johns Hopkins – Medical Imaging Physics Baltimore, MD Research Fellow • Analytically optimized, and numerically simulated performance of small-animal gamma camera. • Developed theory of multi-pinhole gamma cameras • Designed and implemented clinical study of effectiveness of soft-tissue tomography in

interventional radiological treatment of liver cancers.

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PROFESSIONAL EXPERIENCE: ASTROPHYSICS AND TEACHING

2002 – 2004 American Museum of Natural History – Astrophysics New York, NY Research Associate • Bayesian analysis of proper motion survey. Eliminated selection biases from statistical sample to

derive density and history of nearby stars.

2002 – 2004 U.S. Merchant Marine Academy Kings Point, NY Assistant Professor of Physics • Created and taught classes in Physics and Astronomy. • Led student research searching for extrasolar planets • Plebe (Freshman) mentor and advisor • Developed data mining routines to search for correlations within large catalogues of stars. • Created Monte Carlo simulation of interferometric microlenses

2002 – 2003 Pace University Pleasantville, NY Adjunct Professor of Astronomy • Created and taught classes in Astronomy.

2001 – 2002 The Ohio State University – Astronomy Columbus, OH Postdoctoral Researcher • Astrophysics research in contract with JPL for SIM microlensing key project. • Created fisher-matrix Monte Carlo simulations of astrometric and photometric observations of

binary microlenses. • Constructed Monte Carlo simulations to optimize SIM observing strategies and satellite designs.

2000 – 2001 University of Michigan – Astronomy Ann Arbor, MI Lecturer II • Taught large and small classes in astronomy. • Supervised four teaching assistants. • Developed analytic framework for the creation of massive galactocentric black holes.

1998 – 2000 The Ohio State University – Physics Columbus, OH Postdoctoral Researcher • Created analytic approximation of extraterrestrial planets seen through binary microlenses.

Wrote Monte Carlo simulation to successfully test results. • Developed Monte Carlo simulation to test variety of statistical interpretations of velocities of

Magellanic Cloud carbon stars. • Improved numerical simulation model of stellar chemical evolution. • Created program to test new method of interpreting microlensing results using likelihood

analysis. Implemented Monte Carlo simulation to gauge sensitivity. • Created program to combine suite of stellar models, spectra, and formation history to predict

extragalactic infrared background. • Created and implemented numerical technique to mine large N-body simulations for statistics of

microlensing events.

PROFESSIONAL EXPERIENCE: ASTROPHYSICS AND TEACHING

1996 – 1997 Centre d’Études Nucléaires – Astrophysique Saclay, France Boursier Chateaubriand • Worked with C++ based large (10 Tb) data acquisition and mining project. • Created Monte Carlo simulation to determine significance of subtle curvature in Cepheid Period-

Luminosity relation. • Developed analytic techniques to tease out thickness of nearby galaxies from catalogues of

variable stars. Created Monte Carlo simulations to test significance of result. • Constructed analytic models of cosmic element abundances.

1994 – 1996 University of Michigan – Physics Ann Arbor, MI Doctoral research in Astrophysics • Constrained age of universe from observations of white dwarfs. • Ruled out candidates for dark matter. • Teaching Assistant in Statistical Physics, Quantum Mechanics, Modern Physics

1991 – 1994 University of Michigan – Physics Ann Arbor, MI Masters Research in Growth and Pattern Formation Physics • Developed and computationally solved noisy PDE’s describing epitaxial crystal growth. • Monte Carlo studies of phase transitions in supersaturated solutions. • Numerical searches for chaos in crystal growth rates. • Monte Carlo studies of scaling laws and pattern formation in 2-D chemical reactions. • Monte Carlo and analytic studies of anisotropic branching crystals. PUBLICATIONS

Over 50 technical publications in refereed journals in Medical Physics, Astrophysics, and Statistical Physics. Complete publication list available upon request.