title: Acoustic radiation force impulse (ARFI) elastography of kidneys in healthy adult cats: preliminary results.
abstract: OBJECTIVE
  To describe acoustic radiation impulse force elastography in evaluation of kidneys of adult cats.
  
  
  METHODS
  Ten healthy adult short-haired cats were included. Echogenicity and texture, cortico-medullary relationship, size and edges of kidney were assessed by B-mode and by qualitative elastography to detect the presence of deformities and shear velocities of different portions (cranial, middle and caudal of cortex and medulla).
  
  
  RESULTS
  Findings of ultrasonography were normal in all cats. Qualitative elastography demonstrated that the renal cortex was not deformable and had homogeneous dark gray areas; the renal pelvis had lower stiffness (white); and the medulla showed a mosaic pattern. The results of shear wave velocity were different in cranial, middle and caudal regions of cortex and medulla: 2·46 ±0·45, 2·46 ±0·48 and 2·37 ±0·42 (P=0·795) in cortex and 1·61 ±0·69, 1·75 ±0·66 and 2·00 ±0·55 m/s (P=0·156) in medulla, respectively.
  
  
  CONCLUSIONS
  Quantitative and qualitative acoustic radiation impulse force elastography of the kidney in adult cats was easily performed and this study provides base line data to allow the use of acoustic radiation impulse force in diseased animals.
authors.affiliation: Department of Veterinary Medicine, College of Agricultural and Veterinary Sciences, Sao Paulo State University (UNESP), Jaboticabal, SP, Brazil.
authors.forename: P H S
authors.initials: PH
authors.lastname: Garcia
authors.affiliation: Department of Animal Reproduction, College of Agricultural and Veterinary Sciences, Sao Paulo State University (UNESP), Jaboticabal, SP, Brazil.
authors.forename: M A R
authors.initials: MA
authors.lastname: Feliciano
authors.affiliation: Department of Radiology, Sao Paulo of University (USP), Sao Paulo, Brazil.
authors.forename: C F
authors.initials: CF
authors.lastname: Carvalho
authors.affiliation: Department of Medical Clinical, University of Franca (UNIFRAN), Franca, SP, Brazil.
authors.forename: L Z
authors.initials: LZ
authors.lastname: Crivellenti
authors.affiliation: Department of Veterinary Surgery, College of Agricultural and Veterinary Sciences, Sao Paulo State University (UNESP), Jaboticabal, SP, Brazil.
authors.forename: M C
authors.initials: MC
authors.lastname: Maronezi
authors.affiliation: Department of Animal Reproduction, College of Agricultural and Veterinary Sciences, Sao Paulo State University (UNESP), Jaboticabal, SP, Brazil.
authors.forename: V T
authors.initials: VT
authors.lastname: Almeida
authors.affiliation: Department of Animal Reproduction, College of Agricultural and Veterinary Sciences, Sao Paulo State University (UNESP), Jaboticabal, SP, Brazil.
authors.forename: R R
authors.initials: RR
authors.lastname: Uscategui
authors.affiliation: Department of Animal Reproduction, College of Agricultural and Veterinary Sciences, Sao Paulo State University (UNESP), Jaboticabal, SP, Brazil.
authors.forename: W R R
authors.initials: WR
authors.lastname: Vicente
mesh_terms: D000818:Animals; D002415:Cats / Q000033:anatomy & histology*; D054459:Elasticity Imaging Techniques / Q000662:veterinary*; D007668:Kidney / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D008297:Male; D012016:Reference Values