title: Noninvasive ultrasonic subtotal ablation of the prostate in dogs.
abstract: OBJECTIVE
  To determine whether high-intensity focused ultrasound (HIFU) can be used for subtotal ablation of the prostate gland in dogs without causing damage to surrounding tissues.
  
  
  METHODS
  Experimental trial.
  
  
  METHODS
  Adult hounds > or = 5 years old and weighing between 20 and 30 kg.
  
  
  METHODS
  Prostatic ablation was performed in all dogs, using a transrectal HIFU probe. Acute effects of HIFU treatment were evaluated in 4 dogs. These dogs were euthanatized and necropsied 4 hours after the procedure. Chronic effects were evaluated in the other 3 dogs. Serial CBC, serum biochemical analyses, urinalyses, and transrectal ultrasonography were performed. Dogs were euthanatized and necropsied 3 months (1 dog) or 1 year (2 dogs) after HIFU treatment.
  
  
  RESULTS
  Histologic examination of the prostate glands from the 4 dogs euthanatized 4 hours after treatment revealed that 80 to 90% of the gland had undergone hemorrhagic, liquefactive necrosis. Only slight discoloration of the prostatic capsule was detected, and there were not any gross or histologic lesions of the rectal mucosa or urinary bladder. All 3 dogs followed up after HIFU treatment developed cystic cavities within the prostate. Clinicopathologic testing did not indicate any long-term adverse effects.
  
  
  CONCLUSIONS
  This method was effective in causing subtotal ablation of prostatic tissue in dogs. Further study of morbidity is required before the technique can be used clinically.
authors.affiliation: Laboratory Animal Resource Center, School of Medicine, Indiana University, Indianapolis 46202, USA.
authors.forename: L F
authors.initials: LF
authors.lastname: Kincaide
authors.forename: N T
authors.initials: NT
authors.lastname: Sanghvi
authors.forename: O
authors.initials: O
authors.lastname: Cummings
authors.forename: R
authors.initials: R
authors.lastname: Bihrle
authors.forename: R S
authors.initials: RS
authors.lastname: Foster
authors.forename: A
authors.initials: A
authors.lastname: Zaitsev
authors.forename: M
authors.initials: M
authors.lastname: Phillips
authors.forename: J
authors.initials: J
authors.lastname: Syrus
authors.forename: C
authors.initials: C
authors.lastname: Hennige
mesh_terms: D000818:Animals; D017115:Catheter Ablation / Q000009:adverse effects / Q000379:methods / Q000662:veterinary*; D004285:Dogs; D008297:Male; D011467:Prostate / Q000000981:diagnostic imaging*; D011468:Prostatectomy / Q000009:adverse effects / Q000379:methods / Q000662:veterinary*; D014463:Ultrasonography