1. Usefulness of echocardiography in patients undergoing mitral valve surgery;Johnson;J Thorac Cardiovasc Surg,1972
2. Simplified measurement of in vivo compliance of the left ventricle;Spotnitz;Surg Forum,1976
3. Outflow tract obstruction in tetralogy of Fallot. Intraoperative analysis by echocardiography;Sponitz;NY State J Med,1978
4. Intraoperative intracardiac echocardiography during left ventriculomyotomy and myectomy for hypertrophic subaortic stenosis;Syracuse;Circulation,1978
5. Detection of entrapped intracardiac air with intraoperative echocardiography;Duff;Am J Cardiol,1980