Mathematical analysis (fast fourier transform) of the ultrasonic echo pulsation curve in brain diseases

Limitations of the zero crossing detecto

Limitations of the zero crossing detector in the analysis of intracoronary doppler: A comparison with fast fourier transform analysis of basal, hyperemic, and transstenotic blood flow velocity measurements in patients with coronary artery disease

✍ Di Mario, Carlo ;Roelandt, Jos R. T. C. ;De Jaegere, Peter ;Linker, David T. ;Oo 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 943 KB

The current clinical standard for the analysis of intracoronary Doppler signals is the application of a zero-crossing (ZC) detector. However, the accuracy of the method is questionable, especially in areas of disturbed flow, as confirmed by in vitro studies, animal experiments, and intraoperative ob