| 摘要 |
The present invention provides methods for indirect imaging of the internal shape and structure of a heart. The invention can be practiced by injecting fluoroscopic contrast medium into the left atrium and ventricle of a heart, and by placing a radiopaque wire marker in the coronary sinus to provide a known reference location while fluoroscopic contrast medium is injected into the chambers of a heart. The invention provides for simultaneously injecting fluoroscopic contrast medium into both ventricles to characterize the ventricular septum and other cardiac structure. When using the disclosed methods, alone or in a combination with other methods and devices, a clinician can take multiple images of a heart in dyastole and systole. These images can be taken from different angles or the same angle and they can be superimposed upon each other to provide the clinician with a good image of the heart structure and the valve annulus.
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