Doppler sonography with its ability to measure flow velocity in blood vessels provides a perfect understanding of the hemodynamic situation under normal and pathological conditions. It is noncontroversial that real-time TCD is a valuable parameter of cerebral blood flow. The great number of applications resulting from this ability touch upon a wide spectrum of medical and technical knowledge. At this site we post articles based on clinical research, publications and papers presenting to you a wealth of information about the use of TCD in various clinical applications, diagnostics, and treatments. Whether in Neurology, Cardiology, Vascular Surgery, Anaesthesia, Intensive Care, Emergency or Neurosurgery, TCD routine and monitoring examinations as well as TCD special function tests are well established for prediction, diagnostics, and treatment decision-making. Explore the benefits of Doppler Sonography and Transcranial Doppler (TCD) Ultrasound.