³í¹®) Video-assisted thoracic surgery sleeve resection and bronchoplasty using 3D imaging system: its safety and efficacy ¼¿ï´ëº´¿ø¿î¿µ º¸¶ó¸Åº´¿ø(¿øÀå Á¤½Â¿ë) ÈäºÎ¿Ü°ú ¼º¿ë¿ø ±³¼ö(»çÁø) ¿¬±¸ÆÀ°ú ºÐ´ç¼¿ï´ëº´¿ø ÈäºÎ¿Ü°ú ±è°ü¹Î ±³¼ö ¿¬±¸ÆÀ