Doppler ultrasound tells you how fast blood is moving by measuring the average fluid velocity. Transit-time flow measurement (TTFM) tells you how much blood is actually flowing – volume, in mL/min.
This is more than a technical distinction; it has real-world, clinical implications for patients. That’s why leading surgical teams, perfusionists and critical care units around the world rely on Transonic for TTFM measurement technology.
Operating on the heart, saving a limb, transplanting an organ, monitoring ECMO and many other surgical specialties all involve decisions that are based on blood flow. It’s important to know with certainty not just that blood is moving, but how much is moving and thereby perfusing the tissue.
Doppler gives you a waveform and sound. TTFM gives you quantitative, beat-to-beat data that allows you to:
If you're relying solely on Doppler, you may only be seeing half the picture.
Of course, some surgeons feel confident relying solely on their clinical experience and Doppler. That confidence is well-earned. But what about the residents learning beside you? When the stakes are high, real-time flow data helps reinforce clinical intuition and decision-making.
Transonic’s TTFM technology is trusted daily in operating rooms, transplant centers and ICUs around the world.
In CABG, confirming graft patency intraoperatively can mean the difference between success and failure. TTFM provides beat-to-beat data for each anastomosis, empowering precise decisions before closure.
For fem-pop bypasses, AV access, limb salvage and more, our low-flow probes help confirm adequate perfusion to support limb viability and reduce the risk of reintervention.
Founded over 40 years ago by Dr. Cor Drost, Transonic pioneered transit-time flow measurement to close a critical gap in surgical monitoring. Today, we remain the trusted choice for surgeons, perfusionists and ECMO teams who demand accuracy at every level.
