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14 septiembre 2021

May-Thurner Anatomy in Patients With Chronic Thromboembolic Pulmonary Hypertension: An Important Clinical Association

Mohamad Al-Otaibi, Anika Vaidy, Anjali Vaidya, Brooke Zlotshewer, Estefania Oliveros, Huaqing Zhao, Vladimir Lakhter, William R. Auger, Paul R. Forfia, and Riyaz Bashir

Objectives The aim of this study was to investigate the incidence of May-Thurner anatomy (MTA) in patients with chronic thromboembolic pulmonary hypertension (CTEPH) and identify its predictors.

14 septiembre 2021

Renal Artery Fibromuscular Dysplasia Observed on Nonobstructive Angioscopy

Yuhei Nojima, Madoka Ihara, Hidenori Adachi, Tetsuya Kurimoto, Keita Okayama, Yasushi Sakata, and Shinsuke Nanto

ntroduction Fibromuscular dysplasia (FMD) is a nonatherosclerotic and noninflammatory vascular disease that most commonly affects renal and internal carotid arteries. Morphologically, FMD may be classified into 2 subtypes: multifocal and focal. The multifocal type has the appearance of so-called “string of beads” and is more common. Alternatively, the focal type appears as circumferential or tubular stenosis

14 septiembre 2021

Percutaneous Retrieval of an Inferior Vena Cava Filter Penetrating Into the Duodenum

Hiroyuki Gibo, Shota Saito, Jiro Koya, Yutaro Yasui, Yusuke Tokuda, Kazuya Sugitatsu, Yasuhiro Makita, Kazuharu Suzuki, Shuichi Miyamoto, and Morio Shoda

ntroduction A 21-year-old man was referred to our hospital due to repeated syncopal episodes and swelling of the lower limbs. Multislice computed tomography (MSCT) revealed multiple thrombi in the pulmonary arteries. An inferior vena cava (IVC) filter (ALN, Macromed, Accrington, United Kingdom) was deployed and anticoagulation therapy was started. Because the deep vein thrombosis was persistent, we continued the anticoagulant agent for 2 years and attempted to remove the filter later.

01 junio 2021

Carotid-Esophageal Fistula Secondary to Laryngeal Carcinoma: Successful Endovascular Exclusion

Félix Damas de los Santos, Julio I. Farjat Pasos, Kathia E. Estrada Lopez, Ramón J. Cue Carpio, and Eduardo A. Arias

Introduction The development of a carotid-esophageal fistula is a rare but severe condition with high mortality (1). So far, it is considered a surgery-only emergency, as endovascular attempts have always been unsuccessful (2). A 35-year-old man with a history of laryngeal carcinoma initially was treated with partial laryngectomy and later with complete laryngectomy and local radiotherapy. After a first episode of mild hemoptysis, baseline computed tomographic angiography showed no vascular abnormalities (Figure 1), but 24 h later, massive hematemesis commenced.

14 mayo 2021

Superior Mesenteric Artery Calcific Chronic Total Occlusion Recanalized With Retrograde Guidance and a Covered Stent

Yosuke Kirii, Masayoshi Kimura, Yuki Matsubara, Kinya Matsubara, and Takahisa Sawada

Introduction Abdominal angina is a rare disease caused by stenosis or occlusion of the mesenteric artery. This disease is typically treated by surgery, but use of endovascular treatment (EVT) has increased (1). A 62-year-old man was referred to our hospital for uncontrollable abdominal angina felt during dialysis. Contrast-enhanced computed tomography revealed chronic total occlusion (CTO) with a severely calcified nodule at the ostium of the superior mesenteric artery (SMA)

01 noviembre 2017

RADIOLOGY. Imaging Neoadjuvant Therapy Response in Breast Cancer

Amy M. Fowler, David A. Mankoff, Bonnie N. Joe

The use of neoadjuvant systemic therapy in the treatment of breast cancer patients is increasing beyond the scope of locally advanced disease. Imaging provides important information in assessing response to therapy as a complement to conventional tumor measurements via physical examination. The purpose of this article is to discuss the advantages and limitations of current assessment methods, as well as review functional and molecular imaging approaches being investigated as emerging techniques for evaluating neoadjuvant therapy response for patients with primary breast cancer.

01 diciembre 2016

RADIOLOGY. Underestimation Rate at MR Imaging–guided Vacuum-assisted Breast Biopsy: A Multi-Institutional Retrospective Study of 1509 Breast Biopsies

Cécile Verheyden, Emma Pages-Bouic, Corinne Balleyguier, Pascal Cherel, Domenico Lepori, Guillaume Laffargue, Isabelle Doutriaux, Aurélie Jalaguier, Edouard Poncelet, Ingrid Millet, Isabelle Thomassin-Naggara, Patrice Taourel

Purpose: To assess the rate of underestimation of atypical ductal hyperplasia (ADH) and ductal carcinoma in situ (DCIS) at magnetic resonance (MR) imaging–guided vacuum-assisted breast biopsy and to explore the imaging, demographic, and histologic characteristics associated with lesion upgrade after surgery.

01 diciembre 2016

RADIOLOGY. Radiofrequency Ablation, MR Thermometry, and High-Spatial-Resolution MR Parametric Imaging with a Single, Minimally Invasive Device

M. Arcan Ertürk, Shashank Sathyanarayana Hegde, Paul A. Bottomley

Purpose: To develop and demonstrate in vitro and in vivo a single interventional magnetic resonance (MR)–active device that integrates the functions of precise identification of a tissue site with the delivery of radiofrequency (RF) energy for ablation, high-spatial-resolution thermal mapping to monitor thermal dose, and quantitative MR imaging relaxometry to document ablation-induced tissue changes for characterizing ablated tissue.

01 noviembre 2016

RADIOLOGY. Hepatocellular Carcinoma: Intra-arterial Delivery of Doxorubicin-loaded Hollow Gold Nanospheres for Photothermal Ablation—Chemoembolization Therapy in Rats

Junjie Li, Min Zhou, Fengyong Liu, Chiyi Xiong, Wanqin Wang, Qizhen Cao, Xiaoxia Wen, J. David Robertson, Xin Ji, Y. Andrew Wang, Sanjay Gupta, Chun Li

Purpose: To determine if combretastatin A-4 phosphate disodium (CA4P) can enhance the tumor uptake of doxorubicin (Dox)-loaded, polyethylene glycol (PEG)–coated hollow gold nanospheres (HAuNS) mixed with ethiodized oil for improved photothermal ablation (PTA)–chemoembolization therapy (CET) of hepatocellular carcinoma (HCC) in rats.

01 noviembre 2016

RADIOLOGY. Aldosterone-producing Adenoma in Primary Aldosteronism: CT-guided Radiofrequency Ablation—Long-term Results and Recurrence Rate

Shirley Yuk Wah Liu, Charmant Cheuk Man Chu, Teresa Kam Chi Tsui, Simon Kin Hung Wong, Alice Pik Shan Kong, Philip Wai Yan Chiu, Francis Chun Chung Chow, Enders Kwok Wai Ng

Purpose: To evaluate the long-term biochemical, clinical, and recurrence outcomes of radiofrequency (RF) ablation in treating primary aldosteronism due to aldosterone-producing adenoma (APA).

01 octubre 2016

RADIOLOGY. Endovascular MR-guided Renal Embolization by Using a Magnetically Assisted Remote-controlled Catheter System

Prasheel V. Lillaney, Jeffrey K. Yang, Aaron D. Losey, Alastair J. Martin, Daniel L. Cooke, Bradford R. H. Thorne, David C. Barry, Andrew Chu, Carol Stillson, Loi Do, Ronald L. Arenson, Maythem Saeed, Mark W. Wilson, Steven W. Hetts

Purpose: To assess the feasibility of a magnetically assisted remote-controlled (MARC) catheter system under magnetic resonance (MR) imaging guidance for performing a simple endovascular procedure (ie, renal artery embolization) in vivo and to compare with x-ray guidance to determine the value of MR imaging guidance and the specific areas where the MARC system can be improved.

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