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Table 2 CRF for assessment of epicardial coronary artery stenosis

From: Transthoracic Doppler echocardiography – noninvasive diagnostic window for coronary flow reserve assessment

• Functional assessment of intermediate stenosis (40–70%)
• Detection of critical stenosis (>90%)
• Combined assessment of coronary flow and wall motion
• Monitoring the changes of CFR in the early, post-PTCA period to detect artery occlusion, microvascular stunning
• Serial CFR examination after PTCA to predict restenosis
• Postinfarction coronary flow reserve assessment
• Assessment of coronary graft patency