• Yi Zhu was named clinical research manager for ACR Image Metrix (Philadelphia). Previously, Zhu led global trial initiation with Sanofi Aventis. ACR Image Metrix is a research unit of the American College of Radiology.

• Brian Jaffee was named executive VP of marketing for AFP Imaging (Elmsford, New York). Jaffee previously was senior VP of marketing for Suni Medical Imaging. AFP Imaging is a diagnostic supplier for dental, medical and veterinary professionals.

• Bausch & Lomb (Rochester, New York) has named Joseph Barr, OD, as VP of global clinical & medical affairs and professional services, vision care. Barr joined B&L in July 2007 as VP of global research and development, vision care. Bausch & Lomb is an eye health company.

• Hans de Haan, MD, PhD, has joined Bio-Path Holdings (Houston) as medical officer. Most recently, de Haan was medical director for Pharmion. Bio-Path Holdings is a drug-development biotech.

• Michael Cooreman, MD, was named VP of transitional medicine at Ikaria Holdings (Clinton, New Jersey). He most recently was a senior translational medicine expert, autoimmune diseases and transplantation, exploratory clinical development at Novartis. Ikaria Holdings is a critical care biotherapeutics company.

• Quality Systems (Irvine, California) reported that President/CEO Lou Silverman has resigned, effective Aug. 16. The company said it anticipates having a replacement in place before Silverman's departure. Quality Systems and its NextGen Healthcare Information systems subsidiary make computer-based practice management, patient records, and connectivity and other applications and services for medical and dental group practices.

• Thomas Weisel Partners Group (San Francisco) reported the hiring of Jason Moran and Ralph Sutton as managing directors focused on the healthcare sector. Moran previously was managing director at Piper Jaffray & Co., while Sutton was a managing director at Bear Stearns. Thomas Weisel Partners Group is an investment bank focused on growth sectors of the economy.