The tutorial refers to the need for all equipment and facilities related to human health must be adequately verified in calibration and functionality, as any calibration error, indicating graphic display or measured performance parameters can become a source of serious problems for patients. Therefore there is a line of important work in Biomedical Engineering, dedicated to the creation of complementary technology to certify and eventually help calibrate Biomedical technology that has direct or indirect relationship with patients. The work show some important iatrogenic effects and our developments in this field. ©2010 IEEE.