Deb Knapp has been appointed general manager, Americas IIS sales and marketing, for GE Healthcare (Waukesha, Wisconsin). She will be responsible for leading all sales, marketing and commercial efforts for the company's picture archiving and communications systems business in the Americas. In her most recent role, Knapp has led the U.S. sales, marketing and operations teams for the services, supplies and alternate markets teams in the GE Healthcare Clinical Systems business. She joined GE in 1987.

Dr. Curtis Ponton will assume the role of vice president and chief scientist for the NeuroScan business group of sleep diagnostics firm Compumedics (El Paso, Texas). Prior to joining Compumedics as a senior scientist in 2000, Ponton was a longtime NeuroScan user, specializing in maturation of the central auditory system and plasticity in deaf children and adults using cochlear implants. Ponton's promotion coincides with the departure of Dr. Stephen Sands, who has chosen to pursue academic interests outside of Compumedics, after a career with NeuroScan spanning two decades. As the founder of NeuroScan, Sands developed integrated systems for recording high-density EEG and evoked potentials, the company said. Compumedics acquired NeuroScan, a provider of brain research systems, in 2002.

Richard Zehner has been appointed CEO of OnCURE Medical (Newport Beach, California), a provider of outpatient radiation therapy services. Zehner, who joined the OnCURE board of directors earlier this year, previously was chairman and CEO of Alliance Imaging, a diagnostic imaging services company he founded in 1983. OnCURE founder Jeffrey Goffman will assume the titles of president and chief operating officer.

Kelly Elliott, RN, has joined Spectranetics (Colorado Springs, Colorado) as vice president of clinical affairs. Elliott most recently served as senior director, clinical applications research and training development at Stereo-taxis. Spectranetics manufactures single-use medical devices used in minimally invasive surgical procedures within the cardiovascular system in conjunction with its excimer laser system.

Robb Young, product manager for the cardiac computed tomography (CT) business unit of Toshiba America Medical Systems (TAMS; Tustin, California), has been promoted to the newly created position of senior manager, market segment cardiology CT. TAMS sells and services diagnostic imaging systems, and coordinates clinical diagnostic imaging research for all modalities in the U.S.

Stuart Shapiro has resigned as CEO of VirtualScopics (Rochester, New York), a provider of advanced medical image analysis services, and Robert Klimasewski has been appointed to fill that post on an interim basis until a successor is found. Klimasewski is a member of the company's board of directors. He was CEO of Transcat in the 1990s and also was a part owner of Burleigh Instruments, which was sold to EXFO in December 2000.