The UltraSound ToolBox (USTB), is a collaboration between several international institutions lead by former and current CIUS researchers Alfonso Rodriguez-Molares, (University of Vigo, Spain), Ole Marius Hoel Rindal (UiO and SINTEF) and Stefano Fiorentini (NTNU). It is an open source toolbox for processing of ultrasonic signals, where researchers can share and compare processing methods for ultrasound imaging.