data_for_sharing.pdf

The units of height and weight are cm and Kg respectively. SVC passage means that the tip of central venous catheter is identifiable inside the superior vena cava in chest CT exam.RA entrance means that the tip of central venous catheter is identifiable inside the right atrium of the heart in chest CT exam.TCD means the tip-to-carina distance in mm unit.TCD_XR is the value measured with simple chest X-ray film while TCD_CT is the value measured with a scout image of chest CT.Thoracic_wid is the width of thoracic cage in mm unit.TCD_H, TCD_BMI, and TCD_TW refer to TCD divided by height, BMI, and thoracic width respectively for body size correction.