Contact Info
UWM Physics, KIRC 4038
3135 N. Maryland Ave.
Milwaukee, WI 53211
phone (414)229-4475
fax (414)229-5589

Algorithm development for direct image reconstruction is my area of training, although I now collect experimental data. My current research is on applications of thermoacoustics, a hybrid technique in which rapid heating induces outgoing pressure pulses that are detected noninvasively by transducers outside the field of view.

Thermoacoustic imaging of electrical conductivity in human prostates (Fig. 1) is performed in my lab here at UWM; thermoacoustic range verification (Fig. 2) of a 50 MeV proton beam was performed at Lawrence Berkeley National Lab.

My early mathematical research in diffuse tomography was motivated by optical/NIR imaging, followed by cone beam reconstruction of xray CT data and motion correction for Propeller MRI during my eight years with General Electric (GE). Although my degrees are in applied mathematics, at GE I obtained a basic understanding of the physics—and painstaking engineering—required to develop clinical systems.


Fig. 1. Thermoacoustic images of a human prostate.   Visualization of data collected by a cardiac ultrasound array where the compressed urethra indicated by yellow arrows descends towards the apex (a) and seminal vesicles are indicated by yellow arrows (b).   Quantitative reconstruction of induced pressure and electrical conductivity (c).


Fig. 2. Grayscale ultrasound image with Bragg peak overlaid in yellow; beam entry point into high stopping power target in red. First realizations. (a) sagittal, cavity filled with olive oil. (b) sagittal, cavity empty. (c) coronal, cavity filled with olive oil, but thermoacoustic images from both empty and oil-filled experiments are overlaid.