The justification for the existence of the entire medical field is, of course, better healthcare for all patients. Siemens has always been a visionary company, believing that even the farthest technical horizons were temporary and could be surpassed with consistent dedication to improved healthcare. This visionary approach has made Siemens the undisputed innovation leader in CT over the last 35 years. But our innovative philosophy is based solidly upon the assumption that achieving the highest technical performance is only important when it meets the needs of the patient. And meeting the needs of the patient means responsible dose considerations. And with the SOMATOM Definition Flash, we made dose reduction the centrepiece of our research. Its core innovation – the unique low-dose Flash Spiral – can be summarized in four words: Flash speed. Lowest dose. In this issue of SOMATOM Sessions, we are able to bring you the first clinical results of the SOMATOM Definition Flash, as well as reports and updates of our entire portfolio. Read in this issue and see for yourself how Siemens’ commitment to dose management compliments our technological and diagnostic excellence, significantly improving healthcare.