Assessment of peripheral skeletal muscle microperfusion in a porcine model of peripheral arterial stenosis by steady-state contrast-enhanced ultrasound.

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Presentation transcript:

Assessment of peripheral skeletal muscle microperfusion in a porcine model of peripheral arterial stenosis by steady-state contrast-enhanced ultrasound and Doppler flow measurement Claas P. Naehle, MD, Verena A. Steinberg, MD, Hans Schild, MD, Gottfried Mommertz, MD Journal of Vascular Surgery Volume 61, Issue 5, Pages 1312-1320 (May 2015) DOI: 10.1016/j.jvs.2013.11.094 Copyright © 2015 Society for Vascular Surgery Terms and Conditions

Fig 1 Experimental protocol. CEUS, Contrast-enhanced ultrasound. Journal of Vascular Surgery 2015 61, 1312-1320DOI: (10.1016/j.jvs.2013.11.094) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

Fig 2 Stenosis creation. A 5-mm-wide graft (open arrow) is wrapped around the external iliac artery (black arrow) and then gradually tightened with sutures through the graft (open arrow) until the target pressure gradient is reached. Journal of Vascular Surgery 2015 61, 1312-1320DOI: (10.1016/j.jvs.2013.11.094) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

Fig 3 Box and whisker plots of all contrast-enhanced ultrasound (CEUS) and Doppler flow measurements performed at rest and at stress without stenosis and after creation of a moderate stenosis. A, Mean transit time (mTT). B, Wash-in rate (WiR). C, Perfusion index (PI). D, Relative blood volume (rBV). E, Doppler flow. *Statistical significance. a.u., Arbitrary units. Journal of Vascular Surgery 2015 61, 1312-1320DOI: (10.1016/j.jvs.2013.11.094) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

Fig 4 Example of contrast-enhanced ultrasound (CEUS) perfusion quantification: top, B-mode ultrasound and CEUS images; below, curve of ultrasound signal intensity over time; bottom, mean transit time (mTT) measured for region of interest as drawn in CEUS image. A, Rest perfusion without stenosis. B, Rest perfusion at the same location after creation of a moderate stenosis. Journal of Vascular Surgery 2015 61, 1312-1320DOI: (10.1016/j.jvs.2013.11.094) Copyright © 2015 Society for Vascular Surgery Terms and Conditions