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Cardiovascular and Interventional Radiology

Felice D'Antuono, Dario Poretti, Maria Grazia Bordoni, Vittorio Pedicini
No abstract text is available yet for this article.
November 7, 2017: Cardiovascular and Interventional Radiology
Kun Yung Kim, Jiaywei Tsauo, Pyeong Hwa Kim, Jung-Hoon Park, Zhe Wang, Min Tae Kim, Ho-Young Song
PURPOSE: We aimed to evaluate the frequency and protective factors of acute biliary obstruction in patients with biliary stent placement followed by gastroduodenal covered self-expandable metallic stent (SEMS) placement owing to progression of periampullary cancer. MATERIALS AND METHODS: We retrospectively reviewed 58 patients. Total bilirubin and alkaline phosphatase (ALP) levels before and after gastroduodenal covered SEMS placement were evaluated. The incidence of acute biliary obstruction correlated to age, sex, biliary stent length and type, and longitudinal and axial locations of the lower end of the biliary stent was evaluated...
November 7, 2017: Cardiovascular and Interventional Radiology
Tomoyo Fuji, Yuko Nakamura, Wataru Fukumoto, Kenji Kajiwara, Keigo Chosa, Chihiro Tani, Yoshiko Matsubara, Hiroaki Terada, Yukiko Honda, Koji Arihiro, Makoto Iida, Yasutaka Baba, Kazuo Awai
PURPOSE: To identify factors benefiting from computed tomography during hepatic arteriography (CTHA) in addition to dynamic CT studies at the preoperative evaluation of the hypervascularity of hepatocellular carcinoma (HCC). MATERIALS AND METHODS: We retrospectively divided 45 patients with HCC, who underwent both dynamic CT (dCT) and CTHA, into two groups based on the number of hypervascular HCCs identified on dCT and CTHA studies. In group A, the number of HCCs identified by dCT and CTHA was the same and additive CTHA had not been indicated...
November 3, 2017: Cardiovascular and Interventional Radiology
Audrey Fohlen, Julien Namur, Homayra Ghegediban, Alexandre Laurent, Michel Wassef, Jean-Pierre Pelage
OBJECTIVES: To angiographically compare the occlusive effects of hydrocoils and fibered coils in the renal and internal iliac arteries at 24 h and 7 days in the sheep model. To determine the occlusive mechanism by hydrocoils and fibered coils by pathological examination. MATERIALS AND METHODS: Two types of peripheral hydrogel-coated and fibered coils similar in diameter and length were compared. The right and left renal arteries were embolized with 0.018-inch detachable hydrocoils or fibered coils in six sheep...
November 1, 2017: Cardiovascular and Interventional Radiology
Ruediger E Schernthaner, Reham R Haroun, Sonny Nguyen, Rafael Duran, Jae Ho Sohn, Sonia Sahu, Julius Chapiro, Yan Zhao, Alessandro Radaelli, Imramsjah M van der Bom, Maria Mauti, Kelvin Hong, Jean-François H Geschwind, MingDe Lin
PURPOSE: To compare image quality and radiation exposure between a new angiographic imaging system and the preceding generation system during uterine artery embolization (UAE). MATERIALS AND METHODS: In this retrospective, IRB-approved two-arm study, 54 patients with symptomatic uterine fibroids were treated with UAE on two different angiographic imaging systems. The new system includes optimized acquisition parameters and real-time image processing algorithms. Air kerma (AK), dose area product (DAP) and acquisition time for digital fluoroscopy (DF) and digital subtraction angiography (DSA) were recorded...
October 31, 2017: Cardiovascular and Interventional Radiology
Olivier Pellerin, Ikram Amara, Marc Sapoval, Tchao Méachi, Carole Déan, Philippe Beaune, Isabelle de Waziers
PURPOSE: Gene-directed enzyme prodrug therapy (GDEPT) is a "Trojan-horses" suicide gene therapy that consists of tumor-targeted gene delivery (vectorized by mesenchymal stem cells MSCs) encoding an enzyme that converts a harmless prodrug into cytotoxic metabolites in situ. Then, cytotoxic metabolites passively diffuse in the neighboring tumor cells and kill them (bystander effect). The goal of our study was to assess the feasibility and efficacy of intra-arterial administration of MSCs transduced with an optimized gene (MSC-CYP2B6TM-RED) followed by intravenous administration of cyclophosphamide (CPA) into the VX2 rabbit liver tumor...
October 31, 2017: Cardiovascular and Interventional Radiology
Pasqualino Sirignano, Laura Capoccia, Chiara Pranteda, Nunzio Montelione, Wassim Mansour, Alessandro d'Adamo, Martina Formiconi, Francesco Speziale
PURPOSE: The aim of the present study was to evaluate the impact of the aortic bifurcation (AB) morphological characteristics, analyzed on computed tomography angiography (CTA), on outcomes of patients with abdominal aortic aneurysms (AAAs), treated by endovascular aneurysm repair (EVAR) in a single-center experience. MATERIALS AND METHODS: A retrospective analysis was conducted using a prospectively collected database. Morphological features considered as potentially impacting outcomes were maximum AB diameter (ABmax), minimum diameter (ABmin), mean diameter (ABaverage), AB area (ABarea), and AB calcification (ABcalcification) and thrombosis (ABthrombosis)...
October 30, 2017: Cardiovascular and Interventional Radiology
Aoife M Lee, Michael J Lee
Interventional radiology (IR) has grown rapidly over the last 20 years and is now an essential component of modern medicine. Despite IR's increasing penetration and reputation in healthcare systems, IR is poorly taught, if taught at all, in most medical schools. Medical students are the referrers of tomorrow and potential IR recruits and deserve to be taught IR by expert IRs. The lack of formal IR teaching curricula in many medical schools needs to be addressed urgently for the continued development and dissemination of, particularly acute, IR services throughout Europe...
October 30, 2017: Cardiovascular and Interventional Radiology
Yan Zhao, Rafael Duran, Wei Bai, Sonia Sahu, Wenjun Wang, Sven Kabus, MingDe Lin, Guohong Han, Jean-François Geschwind
PURPOSE: Our study aimed to evaluate quantitative tumor response assessment (quantitative EASL-[qEASL]) on computed tomography (CT) images in patients with hepatocellular carcinoma (HCC) treated using conventional transarterial chemoembolization (cTACE), compared to existing 1-dimensional and 2-dimensional methods (RECIST, mRECIST, EASL). MATERIALS AND METHODS: In this IRB-approved, single-institution retrospective cohort study, 52 consecutive patients with intermediate-stage HCC were consecutively included...
October 30, 2017: Cardiovascular and Interventional Radiology
M A A D Ragusi, R W van der Meer, R M S Joemai, J van Schaik, C S P van Rijswijk
PURPOSE: To evaluate the value of single-energy metal artifact reduction (SEMAR) algorithm on image quality in patients after complex endovascular aortic repair (EVAR) with fenestrated and branched devices. METHODS: Routine follow-up computed tomography angiography (CTA) examinations were performed between February 2016 and May 2017 in 18 patients who underwent a complex EVAR procedure at our institution. Objective analysis was performed by measuring the standard deviation (SD) of attenuation (Hounsfield Units), and the contrast-to-noise ratio (CNR) in regions of interests in the stented visceral arteries...
October 30, 2017: Cardiovascular and Interventional Radiology
Andrés Reyes Valdivia, Africa Duque Santos, Julia Ocaña Guaita, Claudio Gandarias Zúñiga
PURPOSE: To present a case of a patient with possible short (2 years approximately) life expectancy and a 68-mm abdominal aortic aneurysm with a large infrarenal neck and large suprarenal aorta that precluded chimney endovascular aortic repair (Ch-EVAR) treatment. MATERIALS AND METHODS: The technical aspects of a modification of the funnel technique (thoracic endograft as a proximal extension of a main infrarenal device in wide necks) are described. We advocated a migrated bifurcated 36-mm endograft in a 34-mm native aorta, ten mm below the lowest renal artery and added endoanchor (four) fixation to this "intentionally migrated main endograft...
October 30, 2017: Cardiovascular and Interventional Radiology
Antonio Salsano, Giancarlo Salsano, Giovanni Spinella, Domenico Palombo, Francesco Santini
No abstract text is available yet for this article.
October 30, 2017: Cardiovascular and Interventional Radiology
Michelle Craigie, Louise Meehan, John Harper
Pressure-injectable peripherally inserted central catheters are now widely used for contrast pressure injections for CT scans. While they are generally regarded as safe, they are not free from complication. In this case review, we present three cases of PICC tips migrating post-CT contrast pressure injection including into the pleural cavity and subsequent complications, to raise awareness of this complication not previously encountered in our institution. Level of Evidence Level 4, Case Series.
October 26, 2017: Cardiovascular and Interventional Radiology
Xinjian Xu, Jingjing Li, Juan Wu, Rui Zhu, Wenbin Ji
OBJECTIVES: To evaluate therapeutic outcomes of intraluminal brachytherapy (ILBT) for malignant obstructive jaundice (MOJ) against stent alone. METHODS: The PubMed, EMBASE, Cochrane Library, CNKI, Wan Fang, VIP and databases were searched for all relevant comparative studies from the earliest available date up to 1 May 2017. Subgroup analyses were performed according to the type of study design and type of stent. RESULTS: Twelve studies that compared ILBT versus stent alone were eligible...
October 26, 2017: Cardiovascular and Interventional Radiology
Benjamin Friedrich, Donald Lobsien, Silke Wunderlich, Christian Maegerlein, David Pree, Karl-Titus Hoffmann, Claus Zimmer, Johannes Kaesmacher
BACKGROUND: Endovascular thrombectomy has become the de facto standard in the treatment of large vessel occlusion. Previously, a correlation between good outcome and the occlusion site, measured by the 'distance to thrombus' (DT)-as the distance from the carotid T to the beginning of the thrombus-after thrombolysis could be shown. In the present study, we analyze the differences between the chances of a good outcome in respect of DT between patients treated endovascularly or intravenously...
October 26, 2017: Cardiovascular and Interventional Radiology
Jeffrey Forris Beecham Chick, Ravi N Srinivasa, Evan Johnson, Matthew L Osher, Anthony Hage, Joseph J Gemmete
Ablation of paraspinal lesions close to the spinal canal and neuroforamina requires protective measures in order to protect the spinal cord and nerve roots. Various methods of protection have been previously described including infusion of saline and CO2. Regardless, neuromonitoring should be adjunctively performed when ablating spinal lesions close to neuronal structures. Balloon protection has been previously described during ablation of renal masses. The benefit of balloon protection in paraspinal mass ablation is it physically displaces the nerve roots as opposed to CO2 or saline which has the potential to insulate but because of its aerosolized or fluid nature may or may not provide definitive continuous protection throughout an ablation...
October 26, 2017: Cardiovascular and Interventional Radiology
Annemarie Uhlig, Oliver Hahn, Arne Strauss, Joachim Lotz, Lutz Trojan, René Müller-Wille, Johannes Uhlig
PURPOSE: To evaluate survival of patients with localized T1a clear cell renal cell carcinoma (ccRCC) who received cryosurgery or thermal ablation compared to deferred therapy. MATERIALS AND METHODS: We included 733 patients with histopathologically confirmed localized T1a ccRCC who either received cryosurgery (n = 315) or thermal ablation (n = 155), as well as patients who deferred therapy (n = 263) from the 2000-2013 Surveillance, Epidemiology, and End Results Program urinary cancer file...
October 26, 2017: Cardiovascular and Interventional Radiology
Sonia Hebbadj, Roberto Luigi Cazzato, Julien Garnon, Benham Shaygi, Xavier Buy, Georgia Tsoumakidou, Herve Lang, Afshin Gangi
OBJECTIVE: To retrospectively assess the safety and oncological efficacy of percutaneous image-guided cryoablation (CA) of T1b (> 4 cm/< 7 cm) renal tumors. MATERIALS AND METHODS: Institutional electronic records were retrospectively reviewed to identify the patients who had undergone percutaneous CA of T1b renal tumors between 2008 and 2016. CA was proposed by a multidisciplinary tumor board for cases with poor renal function or a single kidney; unsuitable for surgical resection; or genetic syndromes predisposing to multiple hereditary renal tumors...
October 26, 2017: Cardiovascular and Interventional Radiology
Gregory C Makris, Raman Uberoi
No abstract text is available yet for this article.
October 26, 2017: Cardiovascular and Interventional Radiology
Panagiotis M Kitrou, Panagiotis Papadimatos, Stavros Spiliopoulos, Nicolaos Christeas, Konstantinos Katsanos, Dimitris Karnabatidis
BACKGROUND: This is a retrospective single-center analysis investigating the results of a percutaneous lysis-assisted balloon (LAB) thrombectomy procedure for the treatment of thrombosed arteriovenous dialysis grafts (AVGs). MATERIALS AND METHODS: Within 5 years (January 2012-December 2016), 291 declotting procedures were performed for the treatment of thrombosed dialysis arteriovenous fistulas or grafts. Data were available for 129 patients (75 men, 58.1%) with an AVG, undergoing 241 procedures [1...
October 26, 2017: Cardiovascular and Interventional Radiology
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