[Results of focused and projector ultrasonic Doppler cardiovalvulography (a study of patients with pulmonary normo- and hypertension)].

: A comparative study of the results of Doppler cardiovalvulography using standard (projector) and original focused ultrasound source is reported. Patients with mitral stenosis is reported. Patients with mitral stenosis and normal or elevated pulmonary pressure were investigated. The focused source was shown to yield unmodified information on the movement of the valves, whereas the projector source recorded the sum total of Doppler signals from the anterior and posterior walls as well as some intracardiac structures. The desired pure signal from the valve was not possible to isolate by either frequency selection, or any other techniques. Valvular movement patterns were shown for cases of pulmonary hypertension that were undetectable by the projector source. The focused source of ultrasound can be used to detect the moments of valvular opening and closing in the absence of sound equivalents.