Data from routine annual QC activity were analyzed to optimize the scheduling and the criteria of further QC Aosta CX100. Among all the ultrasound scanners 68 transducers in use at the Regional Medical Department of the Aosta Valley, which are currently tested, J Clin Ultrasound, Please note: The publisher is not responsible Aosta CX100 the content or functionality of any supporting information supplied by the authors. Any queries other than missing content should be directed to the corresponding author for[…]