Interventional Radiology

AMCS is excited to announce our development of an Interventional Radiology (IR) service as part of our already established Internal Medicine Department!

Interventional Radiology (IR) involves the use of contemporary imaging modalities (CT scans, fluoroscopy, ultrasonography) to gain access to different structures of the pet’s body for diagnostic and therapeutic purposes. IR can be applied to any body system in patients of all sizes. Some techniques, such as chemoembolization of tumors or palliative stenting for malignant obstructions, offer treatment options for patients with various conditions that may not be amenable to standard therapies. IR procedures are generally associated with better patient outcomes, minimal anesthesia time and reduced hospital stays.

AMCS utilizes Interventional Radiology, often in conjunction with endoscopy, to treat and diagnose a wide variety of issues including:

Interventional Oncology

  • Chemoembolization of certain non-resectable neoplasias (hepatic, prostatic)
  • Laser ablation of certain bladder tumors
  • Urethral and ureteral stenting and ballooning for malignancies
  • Tracheal stenting for malignancies
  • Transcaval stenting for heart base tumor, relief of Budd-Chiari syndrome
  • Intra-arterial chemotherapy delivery for TCC of bladder, urethra and prostate


  • Urethral and ureteral stenting and ballooning for malignancies, strictures, obstructions, or infections
  • Diagnostic and therapeutic cystoscopy
  • Voiding urethrohydropulsion
  • Endoscopic sclerotherapy for idiopathic renal hematuria in dogs
  • Hydraulic occluder placement and maintenance for refractory incontinence
  • Ectopic ureter ablation: available in both males and females
  • Laser ablation of persistent mesonephric remnant or hymens, and of certain bladder tumors
  • Percutaneous cystotomy tube placement
  • SUB (subcutaneous ureteral bypass)


  • Esophageal and colonic stenting for neoplasia/strictures
  • Polypectomy (esophageal, gastric, and colonic)
  • Esophageal dilation
  • PEG tube placement


  • Chemoembolization of non-resectable hepatic neoplasia
  • IHPSS (Intrahepatic portosystemic shunt): PTCE percutaneous transjugular embolization with caval stent placement and delivery of coils
  • HAVM (Hepatic arteriovenous malformation): Glue embolization via percutaneous access
  • Percutaneous biliary diversion tube


  • Tracheal stenting
  • Endoscopic tracheal tumor removal
  • Bronchial/tracheal foreign body retrieval
  • Nasopharyngeal stenting
  • Laser ablation of turbinates in brachycephalic dogs
  • Nasopharyngeal balloon dilation
  • Thoracic duct and branch glue embolization for persistent chylothorax
  • Pleuroport placement for chronic pleural effusion


  • Epistaxis: embolization for persistent epistaxis (benign or neoplastic)
  • Intra-arterial stem cell delivery for CKD in dogs, PLN in both dogs and cats
  • Vascular access port placement
  • Embolization for arteriovenous malformations

If you have a patient who you think would benefit from our IR service, please do not hesitate to call to discuss the case with Dr. Donovan.