Vein dissection in a forearm AV fistula
This case shows how intraoperative Transit Time Flow Measurement (TTFM) and High-Frequency Ultrasound (HFUS) revealed a dissection in the outflow vein resulting in immediate revision.
Read moreSurgery or Endovascular Therapy for Chronic Limb-Threatening Ischemia
Publication abstract is copied below BACKGROUND Patients with chronic limb-threatening ischemia (CLTI) require revascularization to improve limb perfusion and thereby limit the risk of amputation. It is uncertain whether an initial strategy of endovascular therapy…
Read moreDetecting Defects after Carotid Endarterectomy: A Comparison between HFUS vs. Angiography
This case illustrates how ultrasound imaging enables more correct detection of higher-grade defects than angiography after CEA. The case is provided by the authors of the CIDAC Study.
Read moreAV Access Workflow including TTFM & HFUS
Based on his extensive experience using Transit Time Flow Measurement (TTFM) and High-Frequency Ultrasound (HFUS) during vascular surgery, Dr. Alexander Meyer published a study in 2019 called, "Determinants of successful arteriovenous fistulae creation including intraoperative…
Read moreSecuring a Fem-Pop Bypass by using TTFM and HFUS
Performing quality control during peripheral bypass surgery is important to secure optimal patency of the graft to avoid re-operation or secondary intervention. In this case, Transit Time Flow Measurement (TTFM), High-Frequency Ultrasound (HFUS), and angio…
Read moreLiver Tx: Guiding inflow modulation with TTFM
This case demonstrates how Transit Time Flow Measurement (TTFM) can be used during liver transplant surgery as a guide when modulating the portal venous flow (PVF) to avoid hepatofugal flow. Hepatofugal flow or non-forward portal flow (NFPF)…
Read moreLiver Tx: Thrombus in Hepatic Artery detected with HFUS
This case demonstrates how High-Frequency Ultrasound (HFUS) can detect thrombus in the hepatic artery even when Transit Time Flow Measurement (TTFM) did not reveal any flow related issues. The case example consists only of a set of measurements…
Read moreLiver Tx: Compromised anastomosis detected with TTFM
This case demonstrates how Transit Time Flow Measurement (TTFM) can be used during liver transplant surgery to detect technical errors.
Read moreMeso-Rex shunt: Thrombus detected with TTFM and HFUS
This case demonstrates how Transit Time Flow Measurement (TTFM) and High-Frequency Ultrasound (HFUS) were instrumental in avoiding a catastrophic incident. A thrombus in the saphenous vein graft (SVG) was detected during surgery. Meso-Rex shunt is a…
Read moreKinked Internal Carotid Artery during CEA: Revision avoided due to TTFM
This case shows the benefit of using Transit Time Flow Measurement (TTFM) in addition to High-Frequency Ultrasound (HFUS) after CEA when dealing with a kinked ICA. Finding kinks like these before performing CEA are not uncommon in elderly…
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