The article reviews some of the basic principle of FMC/TFM data acquisition and imaging processes and compares them to standard phased array techniques. An introduction to the most important American Society for Mechanical Engineers (ASME) Boiler and Pressure Vessel Code is also provided. Introduction In theory, the advanced ultrasonic testing technique Full Matrix Capture / Total Focusing Method (FMC/TFM) should offer improved inspection performance compared to Phased Ar