Comparison of tissue harmonic imaging with contrast (sonicated albumin echocardiography and Doppler myocardial imaging for enhancing endocardial border resolution. - Main ML; Asher CR; Rubin DN; Odabashian JA; Cardon LA; Thomas JD; Klein AL; Main, M L; Asher, C R; Rubin, D N; Odabashian, J A; Cardon, L A; et al. (American Journal of Cardiology, 1999)