1. A method of performing ultrasonic testing on a part, the method comprising: scanning the part while performing pulse echo and through transmission ultrasonic testing on the part; converting pulse echo data into time of flight (TOF) and amplitude channels, and converting through transmission data into a data representation that identifies porosity level; analyzing the pulse echo TOF to identify locations of any anomalies in the part; and determining loss of back (LOB) at each of the identified locations to discriminate low porosity from other anomalies.