Figure 2

Measurement of cavotricuspid isthmus in computed tomography and representative cases. (A) Schema of quantitative measurement of the CTI. (B) The representative case with deep CTI. (C) The representative case with shallow CTI. CTI, cavotricuspid isthmus; SVC, superior vena cava; IVC, inferior vena cava; RA, right atrium; RV, right ventricle; RCA, right coronary artery.