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Figure 3 | Cardiovascular Ultrasound

Figure 3

From: Coronary artery occlusions diagnosed by transthoracic Doppler

Figure 3

Examples of normal anterograde and abnormal retrograde blood flow in septal perforating branches. (A) In a modified parasternal short-axis view, a septal perforating branch from the left anterior descending coronary artery (Sb-LAD) is seen with anterograde blood flow. (B) In a modified parasternal short-axis view, a septal perforating branch from the posterior descending coronary artery (Sb-PDA) is seen with anterograde blood flow. (C) Spectral Doppler tracings of the anterograde blood flood in a Sb-LAD. (D) In a modified parasternal short-axis view, a Sb-PDA is seen with retrograde blood flow. AW = anterior wall of the left ventricle, D = spectral Doppler tracings of diastolic coronary blood flow, IS = interventricular septum, IW = inferior wall of the left ventricle, LV = left ventricle, mLAD = parts of the middle segment of the left anterior descending coronary artery, RV = right ventricle.

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