• Perry Johnston has joined Aperio Technologies (Vista, California) as vice president of legal, regulatory and compliance. Johnston joins Aperio from the Nevada Cancer Institute, where he served as vice president and general counsel. Aperio Technologies is focused on virtual microscopy systems and digital pathology.

• Edward Wong has been appointed vice president of global R&D and engineering at the Del Medical Systems business segment of Del Global Technologies (Valhalla, New York). Wong will be based in the Franklin Park, Illinois, office. He comes to Del Medical from Siemens Medical Systems, where he has served as vice president of global engineering, Siemens X-Ray Division. Del Global Technologies manufactures medical imaging and diagnostic systems consisting of stationary and portable X-ray systems, radiographic/fluoroscopic systems, dental imaging systems and high-voltage power conversion subsystems for medical and other critical industrial applications.

• Richard DeLateur has joined Fluidigm (South San Francisco, California) as CFO. DeLateur has 25 years of finance, general management and business development experience, including 20 years at Intel. After his departure from Intel, he was CFO of Topspin Communications, acquired by Cisco Systems in May 2005. Fluidigm develops systems for analysis and synthesis of biomolecules in nano- and pico-volume environments.

• Mark Vachon has been promoted to president and CEO of GE Healthcare's (Waukesha, Wisconsin) Diagnostic Imaging business. He replaces Reinaldo Garcia, who has been named president and CEO of GE Healthcare-International, based in Buc, France. Garcia will drive the company's expansion plans in Europe, the Middle East and Asia. Vachon is a veteran of GE with a variety of commercial, marketing and financial experience. He spent a number of years within the company's Appliances business in various posts, then was promoted in April 1998 to vice president of investor relations at the GE corporate level. In January 2002, he became executive vice president and CFO of NBC and in July 2003, he was appointed executive vice president and CFO of GE Healthcare.

• John Rooney has been named vice president of marketing, Terumo Interventional Systems (Somerset, New Jersey). Rooney most recently was director of marketing at Roche Diagnostics. Terumo Interventional Systems, a business unit of Terumo Medical, sells a full line of guidewires, catheters, introducer sheaths and embolization products for use in a multitude of different interventional procedures. Rooney is playing a role in the expansion of Terumo's marketing capabilities as it takes back distribution of its interventional products, including Glidewire guidewires, Glidecath catheters and Pinnacle introducer sheaths as the company ends a 15-year relationship with Boston Scientific, which has provided marketing, sales and distribution of Terumo's vascular interventional products.

• Ed Orzetti, president of the global lab business of VWR International (West Chester, Pennsylvania), will leave VWR to pursue other opportunities. His resignation is effective Feb. 28. VWR is a distributor of life sciences products.