الفهرس 
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Abstract
Two-dimensional echocardiography has become an important
diagnostic procedure in the practice of cardiology because it can be used
to demonstrate an accurate anatomic and functional analysis of the
heart (Nishimura eta/., 1985).
Recently, Doppler echocardiography has added a new
dimension to the non-invasive diagnosis of heart disease. It is capable of
reliably evaluating blood flow patterns in most normal and abnormal
states and has been of great use as a supplement to imaging
echocardiographic examination (Halle, 1982 and Cooper et al., 1989).