Journal of Veterinary Clinics (한국임상수의학회지)

The Korean Society of Veterinary Clinics (한국임상수의학회)
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In vitro Estimation of The Hounsfield Units and The Volume and Void of Canine Struvite Stones as Predictors of Fragility in Extracorporeal Shock Wave Lithotripsy

  • Wang, Ji-hwan (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University) ;
  • Hwang, Tae-sung (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University) ;
  • Jung, Dong-in (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University) ;
  • Yeon, Seong-chan (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University) ;
  • Lee, Hee-chun (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University)
  • Received : 2017.03.14
  • Accepted : 2017.06.11
  • Published : 2017.06.30
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Abstract

The aim of this study was to determine whether Hounsfield units (HUs), volume, and various void parameters can predict stone fragility in extracorporeal shock wave lithotripsy (ESWL). HU, volume, porosity, number of voids/stone volume, and void distribution of 30 struvite stones were estimated using helical computed tomography (CT) and micro-CT. The number of shock waves necessary for full fragmentation was accepted as a measure of the stone fragility in ESWL. The correlations between the number of shock waves and the HU, volume, porosity, and number of voids/stone volume were examined. The number of shock waves of the two groups according to the void distribution was also compared. Stone volume correlated with the number of shock waves. Shell-patterned struvite stones were significantly less susceptible to fragmentation in ESWL than non-shell-patterned struvite stones. Stone volume and void distribution may be predictors of the outcome of ESWL treatment.

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References

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