Stent malapposition leads to less optimal outcomes (restenosis and thrombosis) in coronary stenting. 3DT is developing a novel conductance balloon (CB) coronary post-dilatation catheter system (the CB catheter) that accurately measures and displays real-time balloon size. The device provides an innovative, clinically-relevant, real-time, simple, accurate, repeatable, and objective sizing measurement during coronary post-dilatation to aid in stent deployment and proper minimum stent area (MSA) / minimum stent diameter (MSD) determination.