Target Volume Determination 2015

CT makes a very useful contribution to the T-stage, especially in recognising T3 disease and alerting to possible T4 involvement (e.g. accuracy of 85% for mediastinal invasion )

PET does not have any major role in T- staging (e.g. sensitivity of <50% for T1). Role is in N and M staging

EUS is the most accurate T-staging investigation (e.g. accuracy of up to 95% for T3 and T4 disease)