Abstract
B-mode ultrasound imaging guidance of cannulas can be compromised by noise, artifacts, and echogenicity that is not distinctive from that of surrounding anatomy. We have modified a venovenous extracorporeal membrane oxygenation cannula by embedding piezoelectric crystals into each of its 3 blood flow ports. Each vibrating crystal acoustically interacts with a Doppler imaging signal and produces an instantaneous color marker. The aim of this study was to compare identification of the extracorporeal membrane oxygenation cannula ports by B-mode imaging versus the color Doppler marker. Unlike B-mode imaging, the color Doppler marker identified the corresponding port even in highly challenging closed-chest scans in anesthetized pigs. The method could improve guidance accuracy of cannulas by ultrasound scans.
Original language | English (US) |
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Pages (from-to) | 1875-1885 |
Number of pages | 11 |
Journal | Journal of Ultrasound in Medicine |
Volume | 38 |
Issue number | 7 |
DOIs | |
State | Published - Jul 2019 |
Keywords
- Color Doppler guidance
- Minimally invasive interventions
- Ultrasound imaging guidance
- —acoustically active cannula
ASJC Scopus subject areas
- Radiological and Ultrasound Technology
- Radiology Nuclear Medicine and imaging