Spencer Technologies is the world leader in the design and development of digital Power M-Mode Transcranial Doppler. This patented technology is designed to reduce healthcare costs, minimize test variability and improve patient outcomes. Merrill Spencer MD, Mark Moehring PhD and David Dobson, RVT are cofounders of Spencer Technologies which started in 1992. The company's first patent issued in 1994. Since then, eight additional patents have been issued and six others are currently pending. Spencer Technologies intends to dominate the Transcranial Doppler market by continually providing easy to use and efficacious Doppler devices for a variety of medical specialties.