Utilizing Audience Response to Foster Evidence-based Learning in a Pilot Study: Does It Really Work?

Introduction Radiology residency programs are increasingly using audience response systems (ARS) in educational lectures. It is imperative that this is investigated to assess if learning outcomes in trainees are actually improved. Methods The primary objective of this randomized prospective unblinded pilot study was to assess the effect of ARS on long-term learning outcomes, with a secondary objective of understanding perceptions of ARS amongst radiology residents.

Transjugular intrahepatic porto-systemic shunt in the elderly: Palliation for complications of portal hypertension.

Aim: To present a dedicated series of transjugular intrahepatic porto-systemic shunts (TIPS) in the elderly since data is sparse on this population group.

Methods: A retrospective review was performed of patients at least 65 years of age who underwent TIPS at our institutions between 1997 and 2010. Twenty-five patients were referred for TIPS.

Subclavian stenting in a hostile aortic arch facilitated by a low-profile brachial artery through-and-through access.

Subclavian stenting can be extremely difficult in a hostile type II aortic arch (with acute angulation of the subclavian artery origin) or type III aortic arch. This case illustrates use of a low-profile system to gain through-and-through (flossing) access through the brachial artery to facilitate stenting via the femoral approach. This approach can be useful in patients with small brachial arteries where the risk of complication may be high if a standard vascular sheath was placed for stenting via the brachial approach.

Renal vein stenting via the right internal jugular approach with a provocative Valsalva maneuver to reduce the risk of stent migration.

An adult male with nutcracker syndrome was treated successfully by placement of a self-expanding stent in the left renal vein via a right internal jugular vein approach with a provocative Valsalva maneuver. Previous case reports have described renal vein stenting for this condition via common femoral vein approach. However, this study proposes the right internal jugular vein approach as a safer method for the treatment of nutcracker syndrome since the stent can be easily captured along the guidewire if undersized.

Acute renal artery thrombosis treated with t-PA power-pulse spray rheolytic thrombectomy.

Purpose: To describe a new application of tissue plasminogen activator (t-PA) power-pulse spray rheolytic (pharmacomechanical) thrombectomy in the treatment of acute renal artery thrombosis.

Case Report: Acute renal artery thrombosis is a relatively rare, but serious condition in which it is imperative to restore perfusion as quickly as possible. Percutaneous pharmacomechanical thrombectomy technique was utilized to provide an effective means of restoring renal flow and function.