This symposium was dedicated to the discussion of advances in the applications of physics in both clinical practice and in research. Recognized specialists were invited to present topics related to their current professional and research interest. In addition, a poster session and short seminars were held, mainly for works in progress. The rapid growth of medical physics in Mexico brought the idea of organizing a symposium whose purpose was to encourage interest in both research and hospital practice as well as to provide a forum for interchange of information and ideas. All papers were peer reviewed. Topics include: detectors for imaging applications, dosimetry, magnetic resonance imaging, mammography nuclear medicine, phase contrast radiography, and radiotherapy.