01 junio 2016

RADIOLOGY. Embolization of Arteriovenous Malformations: Effect of Flow Control and Composition of n-Butyl-2 Cyanoacrylate and Iodized Oil Mixtures with and without Ethanol in an in Vitro Model

Masaki Ishikawa, MD, PhD, Masahiro Horikawa, MD, Takuji Yamagami, MD, PhD, Barry T. Uchida, BS, Kazuo Awai, MD, PhD, John A. Kaufman, MD, MS

Purpose: To elucidate the effect of flow control (ie, balloon occlusion) and the composition of various mixtures of n-butyl-2 cyanoacrylate (NBCA) and iodized oil, with and without the addition of ethanol, for the treatment of arteriovenous malformations in an in vitro model.

01 junio 2016

RADIOLOGY. MR Imaging–derived Regional Pulmonary Parenchymal Perfusion and Cardiac Function for Monitoring Patients with Chronic Thromboembolic Pulmonary Hypertension before and after Pulmonary Endarterectomy

Christian Schoenfeld, MD, Serghei Cebotari, MD, Jan Hinrichs, MD, Julius Renne, MD, Till Kaireit, MD, Karen M. Olsson, MD, Andreas Voskrebenzev, MSc, Marcel Gutberlet, PhD, Marius M. Hoeper, MD, Tobias Welte, MD, Axel Haverich, MD, Frank Wacker, MD, Jens Vogel-Claussen, MD

Purpose: To evaluate surgical success after pulmonary endarterectomy (PEA) by means of cardiopulmonary magnetic resonance (MR) imaging.

01 junio 2016

RADIOLOGY. Is Post-TIPS Anticoagulation Therapy Necessary in Patients with Cirrhosis and Portal Vein Thrombosis? A Randomized Controlled Trial

Zhu Wang, MD, Ming-Shan Jiang, MD, Hai-Long Zhang, MD, Ning-Na Weng, MD, Xue-Feng Luo, MD, Xiao Li, MD, Li Yang, MD

Purpose: To determine whether posttransjugular intrahepatic portosystemic shunt (TIPS) placement anticoagulation therapy could benefit patients with cirrhosis and portal vein thrombosis (PVT) from the perspective of a change in portal vein patency status and clinical outcomes.

01 junio 2016

RADIOLOGY. Uterine Leiomyomas: Safety and Efficacy of US-guided Suprapubic Transvaginal Radiofrequency Ablation at 1-year Follow-up

Xiang-Jun Wu, MD, Qing Guo, MD, PhD, Bing-Sheng Cao, MD, Li-Xia Tan, MD, Hong-Yu Zhang, MD, Yu-Ru Cai, MD, Bu-Lang Gao, MD, PhD

Purpose: To assess the safety and efficacy of ultrasonography (US)-guided suprapubic transvaginal (ST) radiofrequency ablation (RFA) in the treatment of symptomatic uterine leiomyomas at 1-year follow-up.

01 diciembre 2015

AMERICAN COLLEGE OF CARDIOLOGY. Effect of Baseline Blood Pressure, Stenosis Severity, and Translesion Pressure Gradient

Timothy P. Murphy, MD; Christopher J. Cooper, MD; Alan H. Matsumoto, MD; Donald E. Cutlip, MD; Karol M. Pencina, PhD; Kenneth Jamerson, MD; Katherine R. Tuttle, MD; Joseph I. Shapiro, MD; Ralph D’Agostino, PhD; Joseph Massaro, PhD; William Henrich, MD; Lance D. Dworkin, MD

Background: Multiple randomized clinical trials comparing renal artery stent placement plus medical therapy with medical therapy alone have not shown any benefit of stent placement. However, debate continues whether patients with extreme pressure gradients, stenosis severity, or baseline blood pressure benefit from stent revascularization.

01 febrero 2016

AMERICAN COLLEGE OF CARDIOLOGY. Blood Oxygenation Level-Dependent CMR-Derived Measures in Critical Limb Ischemia and Changes With Revascularization

Adnan Bajwa, BS; Roman Wesolowski, PhD; Ashish Patel, PhD; Prakash Saha, PhD; Francesca Ludwinski, PhD; Mohammed Ikram, PhD; Mostafa Albayati, MBBS, BS; Alberto Smith, PhD; Eike Nagel, MD, PhD; Bijan Modarai, PhD

Background: Use of blood oxygenation level-dependent cardiovascular magnetic resonance (BOLD-CMR) to assess perfusion in the lower limb has been hampered by poor reproducibility and a failure to reliably detect post-revascularization improvements in patients with critical limb ischemia (CLI).

01 febrero 2016

AMERICAN COLLEGE OF CARDIOLOGY. Statins for Prevention of Cardiovascular Events in a Low-Risk Population With Low Ankle Brachial Index

Rafel Ramos, MD, PhD; Maria García-Gil, MD, PhD; Marc Comas-Cufí, MS; Miquel Quesada, MD; Jaume Marrugat, MD, PhD; Roberto Elosua, MD, PhD; Joan Sala, MD, PhD; María Grau, MD, PhD; Ruth Martí, PhD; Anna Ponjoan, MPh; Lia Alves-Cabratosa, MD; Jordi Blanch, MS; Bonaventura Bolíbar, MD

Background: Evidence is lacking about the effectiveness of risk reduction interventions in patients with asymptomatic peripheral arterial disease.

01 febrero 2016

AMERICAN COLLEGE OF CARDIOLOGY. Nonsyndromic Thoracic Aortic Aneurysm and Dissection

Andrew G. Sherrah, BS, MBBS; Sarah Andvik, BMed, MD; Denise van der Linde, MD, PhD; Lucy Davies, MSc; Paul G. Bannon, PhD; Ratnasari Padang, PhD; Michael P. Vallely, PhD; Michael K. Wilson, MBBS; Anthony C. Keech, PhD; Richmond W. Jeremy, PhD

Background: Genetic aortopathy (GA) underlies thoracic aortic aneurysms (TAA) in younger adults. Comparative survival and predictors of outcomes in nonsyndromic TAA (NS-TAA) are incompletely defined compared to Marfan syndrome (MFS) and bicuspid aortic valve (BAV).

01 febrero 2016

CATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS. Vascular complications in steroid treated patients undergoing transfemoral aortic valve implantation

Noam Fink MD, Amit Segev MD, Israel Barbash MD, Andrada Bogdan MD, Ashraf Hamdan MD, Israel Mazin MD, Elad Maor MD, PhD, Ilan Hay MD, Victor Guetta MD and Paul Fefer MD

Background: Steroid therapy has been associated with increased post-surgical bleeding. Vascular complications are a major concern in patients undergoing TAVI. However, the effect of corticosteroids on vascular complications has not been assessed in these patients.

01 diciembre 2015

CATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS. Laser in infrapopliteal and popliteal stenosis 2 study (LIPS2): Long-term outcomes of laser-assisted balloon angioplasty versus balloon angioplasty for below knee peripheral arterial disease

Chatchawan Piyaskulkaew MD, Kesav Parvataneni MD, Hussein Ballout MD, Susan Szpunar PhD, Tarun Sharma MD, Mohamed Almahmoud MD, Thomas LaLonde MD, Thomas Davis MD, Rajendra H. Mehta MD and Hiroshi Yamasaki MD

Background: Laser-assisted balloon angioplasty (LABA) has been shown to be more effective in achieving angiographic success for treatment for below knee peripheral artery disease (PAD) compared with balloon angioplasty alone(BA). However, long-term outcomes of LABA compared with BA for popliteal and infrapopliteal PAD are unknown.

01 diciembre 2015

CATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS. The use of the AVERT system to limit contrast volume administration during peripheral angiography and intervention

Anand Prasad MD, FACC, FSCAI, Carolina Ortiz-Lopez MD, David M. Kaye MBBS, PhD, FRACP, FACC, FESC, Melissa Byrne PhD, Shane Nanayakkara MBBS, S. Hinan Ahmed MD, FACC, FSCAI, Steven R. Bailey MD, FACC, MSCAI, Roxana Mehran MD, FACC, FSCAI, Salil Sethi MD, Avantika Banerjee BS and Marvin Eng MD, FACC, FSCAI

Background: The AVERTTM Contrast Modulation System (AVERT) (Osprey Medical, MN) is designed to reduce contrast volume administration during angiography. The AVERT provides an adjustable resistance circuit which decreases the pressure head delivering contrast towards the patient. The AVERT has not been previously studied in patients undergoing peripheral digital subtraction angiography (DSA). The purpose of this study was (1) to evaluate contrast savings with the AVERT and (2) to evaluate the ability to generate clinically acceptable DSA images in the process. To better define the mechanism of action in the peripheral circulation, we also developed a bench model to study the effects of the AVERT on the hydrodynamics of contrast delivery.

01 diciembre 2015

CATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS. Endovascular revascularization of a surgically ligated superficial femoral artery: A case report

Kalkidan Bishu MD, MS and Ehrin J. Armstrong MD, MSC, MAS

We present a case of a patient with left lower extremity ischemic rest pain who initially underwent surgical profundaplasty requiring ligation of his superficial femoral artery (SFA). The patient developed continued rest pain due to diffuse disease of his profunda and inadequate collaterals. Endovascular intervention was therefore performed to the oversewn SFA. Retrograde left SFA access was obtained and the origin of the SFA was recanalized with true lumen re-entry using an ultrasound guided re-entry catheter. Angioplasty was performed at the origin of the SFA and self-expanding stents were deployed in the proximal and mid left SFA. Hemostasis at the distal left SFA access site was obtained by balloon inflation at the access site and manual compression. This case illustrates the feasibility of endovascular repair of a ligated SFA.

01 mayo 2016

RADIOLOGY. Endovascular Repair of Abdominal Aortic Aneurysm: Follow-up with Noninvasive Vascular Elastography in a Canine Model

Eli Salloum, MSc, Antony Bertrand-Grenier, Eng, MSc, Sophie Lerouge, PhD, Claude Kauffman, PhD, Hélène Héon, DVM, Eric Therasse, MD, Igor Salazkin, MD, Marie-Hélène Roy Cardinal, PhD, Guy Cloutier, PhD, Gilles Soulez, MD, MSc

Purpose: To assess the ability of noninvasive vascular elastography (NIVE) to help characterize endoleaks and thrombus organization in a canine model of abdominal aortic aneurysm after endovascular aneurysm repair with stent-grafts, in comparison with computed tomography (CT) and pathologic examination findings.

01 mayo 2016

RADIOLOGY. Arteriovenous Fistula Development in the First 6 Weeks after Creation

Michelle L. Robbin, MD, Tom Greene, PhD, Alfred K. Cheung, MD, Michael Allon, MD, Scott A. Berceli, MD, PhD, James S. Kaufman, MD, Matthew Allen, BS, Peter B. Imrey, PhD, Milena K. Radeva, MS, Yan-Ting Shiu, PhD, Heidi R. Umphrey, MD, Carlton J. Young, MD

Purpose: To assess the anatomic development of native arteriovenous fistula (AVF) during the first 6 weeks after creation by using ultrasonographic (US) measurements in a multicenter hemodialysis fistula maturation study.

01 mayo 2016

AMERICAN JOURNAL OF ROENTGENOLOGY. Low-Flow Vascular Malformation Pitfalls: From Clinical Examination to Practical Imaging Evaluation—Part 1, Lymphatic Malformation Mimickers

Candace L. White, Brandon Olivieri, Ricardo Restrepo, Brett McKeon, S. Pinar Karakas and Edward Y. Lee

OBJECTIVE. Palpable subcutaneous masses present in various shapes and sizes in the pediatric population and, accordingly, represent a variety of underlying causes. Lymphatic and venous malformations are among the most common pediatric subcutaneous lesions. However, there are congenital and acquired, as well as benign and malignant, soft-tissue masses that can mimic them clinically and at imaging.