الفهرس 
Valve assessmentOnly 14 pages are availabe for public view
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Abstract
Angiocardiography is the techique of visualization by radiography of contrast medium which has been injected into the circulation. The contrast medium my be injected -into a peripheral vein or into n vena cava, but this method is generally not very satisfactorj , The medium does not trriue at the he?.yt RS Q discrete well-defined bc~lus m2 It therefore becomes diluted by the blood :--2-Lurning t o the .heart. It may be difficult So indetify the sequence of chamber filling and the detailed matomy of the individual chamber one opscified chamber inczy obscure another chamber, for example, the upacified right atrial appendage completely obscures the puho -nary valve area in the Iatexil jro;.- ction.