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ESTUDIOS


27 enero 2016

CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY. Novel Software-Assisted Hemodynamic Evaluation of Pelvic Flow During Chemoperfusion of Pelvic Arteries for Bladder Cancer: Double- Versus Single-Balloon Technique

Kiyohito Yamamoto, Kazuhiro Yamamoto, Go Nakai, Haruhito Azuma, Yoshifumi Narumi

Purpose: Approximately 83 % of patients with bladder cancer have achieved a complete response after undergoing a novel bladder preservation therapy involving balloon-occluded intra-arterial infusion chemotherapy (BOAI) using a four-lumen double-balloon catheter, known as the Osaka Medical College regimen. This study aimed to show the quantitative difference in hemodynamics of the bladder arteries using syngo iFlow (Siemens Healthcare, Erlangen, Germany), which provides an automatic tool for quantitative blood flow analysis between double BOAI (D-BOAI) and conventional single BOAI (S-BOAI).

12 junio 2015

CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY. Use of C-Arm Cone Beam CT During Hepatic Radioembolization: Protocol Optimization for Extrahepatic Shunting and Parenchymal Enhancement

Andor F. van den Hoven, Jip F. Prince, Bart de Keizer, Evert-Jan P. A. Vonken, Rutger C. G. Bruijnen, Helena M. Verkooijen, Marnix G. E. H. Lam, Maurice A. A. J. van den Bosch

Purpose: To optimize a C-arm computed tomography (CT) protocol for radioembolization (RE), specifically for extrahepatic shunting and parenchymal enhancement.

01 febrero 2016

JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY. Cryoablation of Osteoid Osteoma in the Pediatric and Adolescent Population

Morgan J. Whitmore, MD, C. Matthew Hawkins, MD, J. David Prologo, MD, Kelley W. Marshall, MD, Jorge A. Fabregas, MD, Douglas B. Yim, MD, David Monson, MD, Shervin V. Oskouei, MD, Nicholas D. Fletcher, MD, Roger S. Williams, DO

Purpose: To evaluate the technical feasibility and clinical efficacy of osteoid osteoma (OO) cryoablation in a large, pediatric/adolescent cohort.

01 febrero 2016

JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY. Balloon-Occluded Retrograde Transvenous Obliteration for Isolated Gastric Varices Draining through Pericardiophrenic Vein without Gastrorenal or Gastrocaval Shunts

Miyuki Maruno, MD, Hiro Kiyosue, MD, Shuichi Tanoue, MD, Norio Hongo, MD, Hiromu Mori, MD

Balloon-occluded retrograde transvenous obliteration (BRTO) is an effective and minimally invasive treatment for isolated gastric varices (GVs) that is usually performed through a gastrorenal shunt (GRS) or gastrocaval shunt (GCS). However, there are some cases in which GVs drain mainly into the left pericardiophrenic vein without an accessible GRS or GCS. This brief report presents four cases of GVs without a GRS/GCS treated by BRTO through the pericardiophrenic vein. BRTO was successfully performed with the use of flexible balloon catheters without any complications in all four patients, and the GVs were completely obliterated.

01 febrero 2016

JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY. Ebola and Other Highly Contagious Diseases: Strategies by the Society of Interventional Radiology for Interventional Radiology

Nadine Abi-Jaoudeh, MD, CCRP, Eric M. Walser, MD, Gabriel Bartal, MD, Alan M. Cohen, MD, Jeremy D. Collins, MD, Kathleen A. Gross, MSN, BS, RN-BC, CRN, Michael S. Stecker, MD, Boris Nikolic, MD, MBA

The present update from the Safety and Health Committee of the Society of Interventional Radiology reviews Ebola virus disease (EVD) and the important points relevant to interventional radiology (IR) professionals who may encounter patients with or suspected to have EVD. The aim of this article is to shed some light on the perceptions and misconceptions of preparedness and protection of patients and hospital staff. This document also reviews the Centers for Disease Control and Prevention (CDC) guidelines related to personal protective equipment (PPE) and management of patients with EBV by health care workers in the United States. Finally, we present two potential EVD scenarios to put prevention and procedure into perspective.

01 enero 2016

INTERNATIONAL JOURNAL OF RADIOLOGY. Renal sympathetic denervation in uncontrolled arterial hypertension after successful repair for aortic coarctation

Philipp Lurz, Thomas Okon, Thomas Riede, Robert Wagner, Gerhard Schuler, Ingo Daehnert, Steffen Desch

Background: Uncontrolled arterial hypertension is a frequent problem after successful repair of CoA and has been attributed to increased central sympathetic drive as well as a blunted baroreceptor reflex. RSD is a promising therapy to reduce central sympathetic drive and improve baroreflex sensitivity.

01 enero 2016

INTERNATIONAL JOURNAL OF RADIOLOGY. Renal artery anatomy affects the blood pressure response to renal denervation in patients with resistant hypertension

Dagmara Hering, Petra Marusic, Antony S. Walton, Jacqueline Duval, Rebecca Lee, Yusuke Sata, Henry Krum, Elisabeth Lambert, Karlheinz Peter, Geoff Head, Gavin Lambert, Murray D. Esler, Markus P. Schlaich

Background: Renal denervation (RDN) has been shown to reduce blood pressure (BP), muscle sympathetic nerve activity (MSNA) and target organ damage in patients with resistant hypertension (RH) and bilateral single renal arteries. The safety and efficacy of RDN in patients with multiple renal arteries remains unclear.

01 enero 2016

INTERNATIONAL JOURNAL OF RADIOLOGY. Effects of renal sympathetic denervation on cardiac sympathetic activity and function in patients with therapy resistant hypertension

Peter M. van Brussel, Daan W. Eeftinck Schattenkerk, Linn C. Dobrowolski, Robbert J. de Winter, Jim A. Reekers, Hein J. Verberne, Liffert Vogt, Bert-Jan H. van den Born

Background: Renal sympathetic denervation (RSD) is currently being investigated in multiple studies of sympathetically driven cardiovascular diseases such as heart failure and arrhythmias. Our aim was to assess systemic and cardiac sympatholytic effects of RSD by the measurement of cardiac sympathetic activity and cardiovascular parameters.

01 enero 2016

INTERNATIONAL JOURNAL OF RADIOLOGY. Effects of renal sympathetic denervation in left ventricular hypertrophy in CKD refractory hypertensive patients

Márcio Galindo Kiuchi, Miguel Luis Graciano, Maria Angela Magalhães de Queiroz Carreira, Tetsuaki Kiuchi, Shaojie Chen, Bruno Rustum Andrea, Jocemir Ronaldo Lugon

Chronic kidney disease (CKD) induces cardiac remodeling including left ventricular hypertrophy (LVH), and cardiac fibrosis. Several clinical studies, including those who recruited participants with mild to moderate reduction in estimated glomerular filtration rate (eGFR) showed an independent association between CKD and LVH. Specifically, there is a progressive increase in the prevalence of LVH and increased left ventricular mass when the eGFR decreases. In addition, among participants in a study including patients with more advanced kidney disease on dialysis, contrast magnetic resonance image (MRI) demonstrates a diffuse pattern image with gadolinium uptake suggestive of fibrosis and non-ischemic cardiomyopathy.

01 diciembre 2015

CATHETERIZATION & CARDIOVASCULAR INTERVENTIONS. Utilization of catheter-directed thrombolysis in pulmonary embolism and outcome difference between systemic thrombolysis and catheter-directed thrombolysis

Nish Patel MD, Nileshkumar J. Patel MD, Kanishk Agnihotri MD, Sidakpal S. Panaich MD, Badal Thakkar MD, Achint Patel MD, Chirag Savani MD, Nilay Patel MD, Shilpkumar Arora MD, Abhishek Deshmukh MD, Parth Bhatt MD, Carlos Alfonso MD, Mauricio Cohen MD, Alfonso Tafur MD, Mahir Elder MD, Tamam Mohamed MD, Ramak Attaran MD, Theodore Schreiber MD, Cindy Grines MD and Apurva O. Badheka MD, FACP, CCDS

Objective: The aim of the study was to assess the utilization of catheter-directed thrombolysis (CDT) and its comparative effectiveness against systemic thrombolysis in acute pulmonary embolism (PE).

21 octubre 2014

AMERICAN HEART ASSOCIATION. Efficacy and Safety of Catheter-Based Radiofrequency Renal Denervation in Stented Renal Arteries

Felix Mahfoud, MD, Stefan Tunev, DVM, Jennifer Ruwart, BS, Daniel Schulz-Jander, PhD, Bodo Cremers, MD, Dominik Linz, MD, PhD, Thomas Zeller, MD, Deepak L. Bhatt, MD, MPH, Krishna Rocha-Singh, MD, Michael Böhm, MD and Robert J. Melder, ScD

Background: In selected patients with hypertension, renal artery (RA) stenting is used to treat significant atherosclerotic stenoses. However, blood pressure often remains uncontrolled after the procedure. Although catheter-based renal denervation (RDN) can reduce blood pressure in certain patients with resistant hypertension, there are no data on the feasibility and safety of RDN in stented RA.

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