Abstract
Valvular obstructions and regurgitations can be diagnosed with either pulsed or CW Doppler. By recording the maximum velocities with CW Doppler the pressure drop across obstructions and across regurgitant valves can be obtained, permitting assessment of the severity of obstructions and providing information on the right heart pressures. Congenital lesions can be diagnosed, obstructions assessed and shunt size indicated.References
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[2] L. HATLE, A. BRUBAKK, A. TROMSDAL, B. ANGELSEN, Noninvasive assessment of pressure drop in mitral stenosis, Br. Heart J. 40, 131-140 (1978).
[3] L. HATLE, B. A. ANGELSEN, A. TROMSDAL, Noninvasive assessment of aortic stenosis by Doppler ultrasound, Br. Heart J., 43, 284-292 (1980).
[4] L. HATLE, Noninvasive assessment and differentiation of left ventricular outflow obstruction by Doppler ultrasound, Circulation, 64, 381-387 (1981).
