Initial clinical experience with intracardiac echocardiography in guiding balloon mitral valvuloplasty: technique, safety, utility, and limitations.
Green NE, Hansgen AR, Carroll JD. Initial clinical experience with intracardiac echocardiography in guiding balloon mitral valvuloplasty: technique, safety, utility, and limitations. Catheter Cardiovasc Interv. 2004 Nov; 63(3):385-94.