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ESTUDIOS


01 agosto 2015

CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY. Outcomes of Locoregional Tumor Therapy for Patients with Hepatocellular Carcinoma and Transjugular Intrahepatic Portosystemic Shunts

Siddharth A. Padia, Rush H. Chewning, Matthew J. Kogut, Christopher R. Ingraham, Guy E. Johnson, Renuka Bhattacharya, Sharon W. Kwan, Wayne L. Monsky, Sandeep Vaidya, Daniel S. Hippe, Karim Valji

Purpose: Locoregional therapy for hepatocellular carcinoma (HCC) can be challenging in patients with a transjugular intrahepatic portosystemic shunt (TIPS). This study compares safety and imaging response of ablation, chemoembolization, radioembolization, and supportive care in patients with both TIPS and HCC.

01 agosto 2015

CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY. Female Pelvic Vein Embolization: Indications, Techniques, and Outcomes

Anthony James Lopez

Ovarian and other pelvic varices (such as in the distribution of the internal iliac veins) are not an infrequent finding in adult women, and particularly those who have previously had at least one pregnancy associated with a vaginal delivery or at least a significant trial of labour. However, they are also well described in asymptomatic parous women.

21 mayo 2015

CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY. Percutaneous Irreversible Electroporation of Unresectable Hilar Cholangiocarcinoma (Klatskin Tumor): A Case Report

Marleen C. A. M. Melenhorst, Hester J. Scheffer, Laurien G. P. H. Vroomen, Geert Kazemier, M. Petrousjka van den Tol, Martijn R. Meijerink

Irreversible electroporation (IRE) is a novel image-guided ablation technique that is rapidly gaining popularity in the treatment of malignant tumors located near large vessels or bile ducts. The presence of metal objects in the ablation zone, such as Wallstents, is generally considered a contraindication for IRE, because tissue heating due to power conduction may lead to thermal complications. This report describes a 66-year-old female with a Bismuth–Corlette stage IV unresectable cholangiocarcinoma with a metallic Wallstent in the common bile duct, who was safely treated with percutaneous IRE with no signs for relapse 1 year after the procedure.

13 mayo 2015

CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY. CT-Guided Percutaneous Transthoracic Needle Biopsies Using 10G Large-Core Needles: Initial Experience

Ulrich C. Lalji, Joachim E. Wildberger, Axel Zur Hausen, Matyas Bendek, Anne-Marie C. Dingemans, Monique Hochstenbag, Marco Das

Purpose: Using large-core biopsy needles in CT-guided percutaneous transthoracic needle biopsies (PTNB) may be advantageous in terms of larger specimens, which facilitate more extensive histopathological, immunohistochemical, and molecular examination of tumor tissue. The aim of this study was to evaluate the success rate and safety in CT-guided PTNB using 10G large-core biopsy needles.

01 abril 2015

CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY. Randomized Comparison of Selective Internal Radiotherapy (SIRT) Versus Drug-Eluting Bead Transarterial Chemoembolization (DEB-TACE) for the Treatment of Hepatocellular Carcinoma

Michael B. Pitton, Roman Kloeckner, Christian Ruckes, Gesine M. Wirth, Waltraud Eichhorn, Marcus A. Wörns, Arndt Weinmann, Mathias Schreckenberger, Peter R. Galle, Gerd Otto, Christoph Dueber

Purpose: To prospectively compare SIRT and DEB-TACE for treating hepatocellular carcinoma (HCC).

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.

14 marzo 2015

CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY. Introducing the Concept of the Minimally Important Difference to Determine a Clinically Relevant Change on Patient-Reported Outcome Measures in Patients with Intermittent Claudication

Anne P. Conijn, Wilma Jonkers, Ellen V. Rouwet, Anco C. Vahl, Jim A. Reekers, Mark J. W. Koelemay

Purpose: The minimally important difference (MID) represents the smallest change in score on patient-reported outcome measures that is relevant to patients. The aim of this study was to introduce the MID for the Vascular Quality of Life Questionnaire (VascuQol) and the walking impairment questionnaire (WIQ) for patients with intermittent claudication (IC).

01 agosto 2015

JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY. Microwave Ablation Compared to Radiofrequency Ablation for Hepatic Lesions: A Meta-Analysis

Ya Ruth Huo, Guy D. Eslick, DrPH, PhD

To evaluate the efficacy and safety of microwave (MW) ablation compared with radiofrequency (RF) ablation for hepatic lesions by using meta-analytic techniques. Overall, 16 studies involving 2,062 patients were included. MW ablation was found to have significantly better 6-year overall survival than RF ablation (odds ratio, 1.64, 95% confidence interval, 1.15–2.35), but this was based on a few articles (n = 3 of 16). MW ablation and RF ablation had similar 1–5-year overall survival, disease-free survival, local recurrence rate, and adverse events. Based on similar safety and efficacy outcomes, either MW ablation or RF ablation may be used for effective local hepatic therapy.

01 agosto 2015

JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY. Practice Parameter for Interventional Clinical Practice and Management

A Collaborative Statement from the American College of Radiology the Society of Interventional Radiology the Society of Neurointerventional Surgery and the Society of Pediatric Radiology

This document is an educational tool designed to assist practitioners in providing appropriate radiologic care for patients. Practice Parameters and Technical Standards are not inflexible rules or requirements of practice and are not intended, nor should they be used, to establish a legal standard of care. For these reasons and those set forth below, the American College of Radiology (ACR) and our collaborating medical specialty societies caution against the use of these documents in litigation in which the clinical decisions of a practitioner are called into question.

01 septiembre 2015

JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY. Long-Term Patency and Clinical Analysis of Expanded Polytetrafluoroethylene–Covered Transjugular Intrahepatic Portosystemic Shunt Stent Grafts

Charles N. Weber, MD, Gregory J. Nadolski, MD, Sarah B. White, MD, MS, Timothy W.I. Clark, MD, Jeffrey I. Mondschein, MD, S. William Stavropoulos, MD, Richard D. Shlansky-Goldberg, MD, Scott O. Trerotola, MD, Michael C. Soulen, MD

Purpose: To evaluate long-term patency and symptomatic recurrence rates following transjugular intrahepatic portosystemic shunt (TIPS) creation with expanded polytetrafluoroethylene (ePTFE)–covered stent grafts and to determine the necessity of extended clinical follow-up beyond 2 years after TIPS creation.

01 septiembre 2015

DIAGNOSTIC AND INTERVENTIONAL RADIOLOGY. Comparative study of the corrosion behavior of peripheral stents in an accelerated corrosion model: experimental in vitro study of 28 metallic vascular endoprostheses

Karolin J. Paprottka, Philipp M. Paprottka, Maximilian F. Reiser, Tobias Waggershauser

PURPOSE: Clinical cases of stent-fractures show that corrosion behavior might play a role in these fractures. Implanted in vivo, especially in combination with other implanted foreign materials, these metallic products are exposed to special conditions, which can cause a process of corrosion. Here, we aimed to test the corrosion potential of stents made of different materials in an in vitro setting.

01 septiembre 2015

DIAGNOSTIC AND INTERVENTIONAL RADIOLOGY. Angiographic analysis of the lateral intercostal artery perforator of the posterior intercostal artery: anatomic variation and clinical significance

Eui-Yong Jeon, Young Kwon Cho, Dae Young Yoon, Young Lan Seo, Kyoung Ja Lim, Eun Joo Yun

PURPOSE: Knowledge of the anatomic variations of the posterior intercostal artery (PICA) and its major branches is important during transthoracic procedures and surgery. We aimed to identify the anatomic features and variations of the lateral intercostal artery perforator (LICAP) of the PICA with selective PICA arteriography.

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