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J Vet Sci 2017; 18(4): 507-514  https://doi.org/10.4142/jvs.2017.18.4.507
Quantitative evaluation of renal parenchymal perfusion using contrast-enhanced ultrasonography in renal ischemia-reperfusion injury in dogs
Gahyun Lee, Sunghoon Jeon, Sang-kwon Lee, Byunggyu Cheon, Sohyeon Moon, Jun-Gyu Park, Kyoung-Oh Cho, Jihye Choi*
College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
Correspondence to: Jihye Choi
Tel: +82-62-530-2821; Fax: +82-62-530-2809; E-mail: imsono@chonnam.ac.kr
Received: October 24, 2016; Revised: January 9, 2017; Accepted: February 7, 2017; Published online: December 31, 2017.
This study evaluated whether renal perfusion changes can be noninvasively estimated by using contrast-enhanced ultrasonography (CEUS) in renal ischemia-reperfusion injury and investigated the correlation between renal perfusion measured by CEUS and necrosis and apoptosis of renal tubular epithelial cells. In six dogs with experimentally induced renal ischemia-reperfusion injury, changes in time to peak intensity, peak intensity, and area under the curve were measured on CEUS. Peak intensity and area under the curve of the renal cortex began to decrease on day 1 (about 20% lower than baseline) and reached the lowest levels (about 50% of baseline) on day 4. They then gradually increased until day 10, at which time peak intensity was about 87% and area under the curve was about 95% of baseline; neither fully recovered. Both parameters were strongly correlated with the necrosis scores on histopathologic examination on day 4 (r = -0.810 of peak intensity and r = -0.886 of area under the curve). CEUS allowed quantitative evaluation of perfusion changes in acute renal ischemia-reperfusion injury, and CEUS results were correlated with renal tubular damage on histopathologic examination. Thus, CEUS could be a noninvasive, quantitative diagnostic method for determining progress of renal ischemia-reperfusion injury.
Keywords: contrast-enhanced ultrasonography, dogs, renal tubular damage, reperfusion injury, time-intensity curve

© 2017 The Korean Society of Veterinary Science.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.