Dr. S. Lewis Meyer was elected President and Chief Executive Officer in April 2003. He has served on the Board of Directors since July 2002. He is currently a member of the Executive Committee.

Dr. Meyer was President and Chief Executive Officer of Imatron, Inc., a publicly held company engaged in designing, manufacturing, and marketing of a high-performance electron beam tomography (EBT) scanner. He held that position from June 1993 until December 2001, when Imatron was acquired by General Electric Medical Systems. Prior to that, he was Vice President, Operations, of Otsuka Electronics, (USA) Inc., a manufacturer of clinical MRI systems and analytical NMR spectrometers. Previously, he was founder, President, and Chief Executive Officer of American Health Services Corp. (now Insight Health Services), a nationwide developer and operator of diagnostic imaging and treatment centers.

Dr. Meyer has also served on the Board of Directors of the American Electronics Association (AEA) as well as serving as a Director of a variety of public and private companies principally in the field of medical technology and biotech.

Dr. Meyer received his bachelor's degree in physics from the University of the Pacific, Stockton, California, and his master's and doctorate degrees in physics from Purdue University, West Lafayette, Indiana.