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BACKGROUND Current techniques of brachial plexus block are "blind," and nerve localization can be frustrating and time consuming. Previous studies on ultrasound-assisted brachial plexus blocks are mostly performed with scanning probes of 10 MHz or less. The authors tested the usefulness of a state-of-the-art, high-resolution ultrasound probe (up to 12 MHz)(More)
PURPOSE To evaluate the efficacy and safety of arterial embolization (AE) for treatment of primary postpartum hemorrhage (PPH), and the factors associated with clinical success. MATERIAL AND METHODS A retrospective analysis of all patients undergoing AE for primary PPH at three institutions (N = 43) from 1996 through 2007 was conducted. Patients with an(More)
PURPOSE To assess the efficacy and safety of radiologically guided percutaneous placement of gastrostomy and gastrojejunostomy catheters. MATERIALS AND METHODS Over 6 years, 562 referred patients were considered for gastrojejunostomy or gastrostomy procedures. In 43 cases (7.7%), the procedure was not performed because of overlying viscera, high position(More)
PURPOSE To evaluate the efficacy of embolotherapy in patients with bleeding traumatic uterine arteriovenous malformations (AVMs). MATERIALS AND METHODS A retrospective review of all patients who underwent pelvic arterial embolization at our institution between July 1992 and September 2002 was performed. Fifteen patients were diagnosed with a uterine(More)
PURPOSE Cephalic arch stenosis (CAS) is a recently recognized cause of dysfunction in autogenous hemodialysis fistulas. The prevalence of this lesion among dysfunctional autogenous fistulas is described, as are outcomes after percutaneous therapy. MATERIALS AND METHODS A cohort of 177 dysfunctional autogenous fistulas treated over a 48-month period was(More)
PURPOSE To document the technical results and spectrum of practice of uterine artery embolization (UAE) for fibroids in the health care setting in Canada. The effects of interventional radiologist's (IR's) experience with UAE on procedure and fluoroscopy time were also investigated. MATERIALS AND METHODS The study involved a multicenter prospective(More)
OBJECTIVE To review our experience with fluoroscopic evaluation and manipulation of malpositioned, malfunctioning, peritoneal dialysis (PD) catheters. MATERIALS AND METHODS Thirty-one patients, over a 5-year period (1 May 1992 to 30 April 1997) with malfunctioning PD catheters, who had fluoroscopically-guided manipulation were reviewed. Catheters were(More)
PURPOSE To determine the safety and outcomes of performing endovascular interventions across pacemaker (PM) lead-related central vein stenosis/occlusion. MATERIALS AND METHODS Clinical and imaging records from April 2002 to August 2010 were reviewed for patients presenting with clinically significant central venous stenosis or central venous obstruction(More)
PURPOSE To determine if there is a difference in intervention patency for central venous stenosis (CVS) and occlusion between patients with autogenous hemodialysis fistulas and those with grafts. MATERIAL AND METHODS A retrospective study was performed from March 1998 to September 2005 identifying all patients with autogenous fistulas and synthetic grafts(More)