الفهرس 
Over view on coronary circulationOnly 14 pages are availabe for public view
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Abstract
During the last few years, transesophageal echocardiography has been shown to provide optimal imaging quality in virtually all patients i of all cardiac structures including the aortic root at the level of the coronary arteries.
Recent works have demonstrated that proximal portions of the Icoronary arteries can be visualized by transesophageal echocardiography 1 coronary flow encoded by color Doppler and the pulsed Doppler ows measurement of diastolic and systolic coronary flow velocities in ximal portion of left coronary artery.
The aim of this study was to evaluate the feasibility of sophageal Doppler echocardiography in the assessment of coronary flow in various cardiac diseases that may alter the coronary blood w characteristics. I In our study 60 patients were included 15 with IHD, 15 with AR with AS, 10 with combined AR & MVD, & 10 patients with AR After 2D visualization color Doppler was applied to the proximal coronary arteries and flow pattern was evaluated and measured by i of pulsed Doppler which was compared with 10 control subjects.
In patients with LMCA disease we could recognize the site of with sensitivity reached 75% using conventional 2D iography and reached 100% by application of color Doppler which Loduced a mosaic pattern at the site of stenosis or post stenotic s. While in patients with LAD disease the site of the lesion could