SALT LAKE CITY & SAN FRANCISCO--(BUSINESS WIRE)--John C. Klock, M.D., has joined the Board of Directors of TechniScan Medical Systems (TMS), Inc., a Salt Lake City-based developer of ultrasound technology for breast imaging. A board-certified Internist and Hematologist-Oncologist, Klock is the Chairman and Co-founder of Holistica Hawaii Preventive Medicine, where he is applying modern medical technologies for disease prediction and health screening to develop individualized programs for maintaining optimal health through prevention.