EchoDx Hub

12/05/2026

🫀 EchoDx Hub | MCQ #

Q. Aliasing can be reduced by:

A. Decreasing the depth
B. Increasing the PRF
C. Reducing the transducer frequency
D. Changing to continuous wave Doppler
E. All of the above

✅ Correct Answer: E. All of the above

📖 Explanation:
Aliasing occurs in Pulsed Wave Doppler when the Doppler shift exceeds the Nyquist limit.

🔹 Methods to reduce aliasing include:
• Decreasing depth → increases PRF
• Increasing PRF → raises Nyquist limit
• Reducing transducer frequency → lowers Doppler shift
• Using Continuous Wave (CW) Doppler → eliminates aliasing entirely

👉 Key Concept:
High velocity + low PRF = aliasing

🔹 Additional tricks:
• Baseline shifting
• Using lower baseline velocities
• Adjusting Doppler angle

12/05/2026

🫀 Echo Challenge 🔍

Two PLAX views.
Two different valvular pathologies.

🎯 Your challenge:
Find ANY 5 differences between these two echo clips 👀

You can observe:
• Valve morphology
• Leaflet mobility
• Thickening
• Calcification
• Chamber changes
• Subvalvular apparatus
• Hemodynamic effects

👇 Comment the differences you noticed!

11/05/2026

08/05/2026

🎉🫀 One Year of EchoDx Hub 🫀🎉

Today marks a special milestone — 1 year of EchoDx Hub! ❤️

What started as a small step with a passion for echocardiography and cardiac education has now become a growing community of learners, doctors, technicians, students, and heart enthusiasts.

Over this one year: 📚 Shared educational echo cases
🩺 Discussed rare and interesting cardiac findings
🎥 Created learning content for Echo & ECG interpretation
💡 Helped spread awareness in cardiovascular imaging

A heartfelt THANK YOU to everyone who supported, followed, shared, liked, commented, and learned with EchoDx Hub throughout this journey 🙏❤️

This is just the beginning…
More cases, more learning, and more cardiac education are coming ahead 🚀🫀

✨ “Learning the heart, one echo at a time.”

— EchoDx Hub

07/05/2026

🫀 EchoDx Hub | MCQ
Q. The Nyquist limit can be increased by:
A. Increasing the PRF
B. Reducing the PRF
C. Neither
D. Increasing imaging depth
✅ Correct Answer: A. Increasing the PRF
📖 Explanation:
The Nyquist limit is directly related to the Pulse Repetition Frequency (PRF).
🔹 Formula:
Nyquist Limit = PRF / 2
👉 Therefore, increasing the PRF increases the Nyquist limit, allowing measurement of higher Doppler velocities before aliasing occurs.
🔹 Other options:
• Reducing PRF → ❌ lowers Nyquist limit
• Neither → ❌ incorrect
• Increasing imaging depth → ❌ decreases PRF and lowers Nyquist limit
👉 Key Concept:
Higher PRF = higher Nyquist limit = less aliasing