Left ventricular angiogram systolic frame
Left ventricular angiogram, systolic frame in right anterior oblique (RAO) view
Pigtail catheter is seen in the left ventricular cavity. Pigtail catheter is used for pressure injection because it is less likely to produce ectopy and staining of the myocardium. Since there are multiple holes in different directions, the recoil forece on the catheter is cancelled out and the chance of a single jet producing myocardial staining is reduced. The pigtail should be in the cavity and not in the inflow or outflow region. If it is in the inflow region, it can produce mitral regurgitation. A ventrcular ectopy induced by the catheter can also produce a whiff of mitral regurgitation. LVOT: Left ventricular outflow tract. Left ventricular angiogram in RAO view is usually taken to check the regional wall motion, left ventricular function and mitral regurgitation if any.
Left ventricular angiogram diastolic frame
Left ventricular angiogram, diastolic frame in RAO view
The diastolic frame of the left ventricular angiogram shows fine trabaculae as negative shadows. The aortic valve in the closed position is seen as a thin negative shadow at the base of the sinus of Valsavla. Negative shadow of mitral diastolic flow can be seen at the posterobasal region. Thickness of the ventricular wall can be assessed by noting the distance between the dye filled region (caivty) and the cardiac silhouette, especially in the anterolateral region.