Table 1. Summary of distance measurements between anatomical landmarks in CT.
| Distance (cm) | Mean ±SD (cm) | Range (cm) |
|---|---|---|
| RSCJ-Carina | 6.1±1.5 | 2.9-10.1 |
| Carina-PR | 1.6±0.5 | 0.4-2.8 |
| PR-ACJ | 3.0±0.9 | 1.3-5.4 |
| Extrapericardial SVC | 2.5±1.0 | 0.3-4.8 |
| RSCJ-PR | 7.7±1.5 | 4.3-11.3 |
| RSCJ-ACJ | 10.7±1.8 | 6.6-15.9 |
CT, computed tomography; RSCJ, upper margin of the right clavicular notch; PR, pericardial reflection; ACJ, atriocaval junction; SVC, superior vena cava; SD, standard deviation.