| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.6 / 5 (175) | Vienna, Austria | 48+ years | Coronary angiography, echocardiography, cardiac CT, coronary CT angiography, cardiac stress testing | Patients needing advanced cardiac diagnostics and catheter-based treatment | Specialized cardiovascular center for dilated cardiomyopathy. On-site echocardiography and coronary CT. Catheter-based techniques by senior cardiologists. ISO 9001:2015 certified. | World's Best Hospitals 2021 by Newsweek, International Organization for Standardization | ||
| #2 | 4.2 / 5 (21) | Vienna, Austria | — | — | Heart ultrasound | — | — | International Organization for Standardization | |
| #3 | 4.2 / 5 | Vienna, Austria | — | — | — | — | — | — |