Journal of Veterinary Clinics (한국임상수의학회지)

The Korean Society of Veterinary Clinics (한국임상수의학회)
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Ultrasonographic Evaluation of Renal Cortex and Outer Medulla Thickness in Dogs with Chronic Kidney Disease

  • Lee, Siheon (College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University) ;
  • Hong, Sungkyun (College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University) ;
  • Kim, Hyejin (College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University) ;
  • Oh, Dayoung (College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University) ;
  • Kim, Seungji (College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University) ;
  • Choen, Sangkyung (College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University) ;
  • Choi, Mincheol (College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University) ;
  • Yoon, Junghee (College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University)
  • Received : 2017.03.17
  • Accepted : 2017.06.11
  • Published : 2017.06.30
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Abstract

This study was performed to retrospectively pursue any correlation between renal cortex thickness (RCT), outer medulla thickness (OMT) on ultrasonography (US) and chronic kidney disease (CKD) with International Renal Interest Society (IRIS) stage. Medical records and US findings of the dogs diagnosed CKD were reviewed for comparing to those of the clinically healthy dogs from March. 2015 through June. 2016. To evaluate the correlation about normal and CKD patients, RCT and the OMT were measured on US images. RCT and OMT were adjusted by dividing body surface area for standardization (RCTS, OMTS). Also the ratio of RCT/OMT were calculated and these indices were evaluated to investigate any tendency between 5 groups (normal and 4 IRIS stages) using Jonckheere-Terpstra trend test (J-T test). The RCTS showed a declining tendency (p < 0.02) and the OMTS showed an inclining tendency from normal through each IRIS stage (p < 0.01). The RCT/OMT showed also declining tendency (p < 0.01). Although the gold standard for renal function including GFR is lack, it is thought that differentiation between normal and CKD patients could be possible on US measurement of renal cortex and outer medulla thickness, which could be an alternative index for kidney function in diagnostic imaging.

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