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"contrast media"

Joshua T Chai, Luca Biasiolli, Linqing Li, Mohammad Alkhalil, Francesca Galassi, Chris Darby, Alison W Halliday, Linda Hands, Timothy Magee, Jeremy Perkins, Ed Sideso, Ashok Handa, Peter Jezzard, Matthew D Robson, Robin P Choudhury
OBJECTIVES: The aim of this study was to: 1) provide tissue validation of quantitative T2 mapping to measure plaque lipid content; and 2) investigate whether this technique could discern differences in plaque characteristics between symptom-related and non-symptom-related carotid plaques. BACKGROUND: Noninvasive plaque lipid quantification is appealing both for stratification in treatment selection and as a possible predictor of future plaque rupture. However, current cardiovascular magnetic resonance (CMR) methods are insensitive, require a coalesced mass of lipid core, and rely on multicontrast acquisition with contrast media and extensive post-processing...
October 6, 2016: JACC. Cardiovascular Imaging
Yibin Xie, Young-Jin Kim, Jianing Pang, Jung-Sun Kim, Qi Yang, Janet Wei, Christopher T Nguyen, Zixin Deng, Byoung Wook Choi, Zhaoyang Fan, C Noel Bairey Merz, Prediman K Shah, Daniel S Berman, Hyuk-Jae Chang, Debiao Li
OBJECTIVES: The aim of this work is the development of coronary atherosclerosis T1-weighted characterization with integrated anatomical reference (CATCH) technique and the validation by comparison with high-risk plaque features (HRPF) observed on intracoronary optical coherence tomography (OCT) and invasive coronary angiography. BACKGROUND: T1-weighted cardiac magnetic resonance with or without contrast media has been used for characterizing coronary atherosclerosis showing promising prognostic value...
October 6, 2016: JACC. Cardiovascular Imaging
Sophia Sakellariou, Wenguang Li, Manosh C Paul, Giles Roditi
Iodinated contrast media (CM) are the most commonly used injectables in radiology today. A range of different media are commercially available, combining various physical and chemical characteristics (ionic state, osmolality, viscosity) and thus exhibiting distinct in vivo behaviour and safety profiles. In this paper, numerical simulations of blood flow with contrast media were conducted to investigate the effects of contrast viscosity on generated vessel wall shear stress and vessel wall pressure to elucidate any possible relation to extravasations...
October 8, 2016: Medical Engineering & Physics
Trishan Patel, Amy Elphick, James E Jackson, Claire L Shovlin
OBJECTIVE: To evaluate if injection of intravenous particles may provoke migraines in subjects with right-to-left shunts due to pulmonary arteriovenous malformations (AVMs). BACKGROUND: Migraine headaches commonly affect people with hereditary hemorrhagic telangiectasia (HHT), especially those with pulmonary AVMs that provide right-to-left shunts. In our clinical practice, patients occasionally reported acute precipitation of migraine headaches following injection of technetium-labeled albumin macroaggregates for nuclear medicine scans...
October 11, 2016: Headache
Michael J Callahan, Jennifer M Talmadge, Robert D MacDougall, Patricia L Kleinman, George A Taylor, Carlo Buonomo
In our experience, questions about the appropriate use of enteric contrast media for pediatric fluoroscopic studies are common. The purpose of this article is to provide a comprehensive review of enteric contrast media used for pediatric fluoroscopy, highlighting the routine use of these media at a large tertiary care pediatric teaching hospital.
October 10, 2016: Pediatric Radiology
Jianxiao Shen, Ling Wang, Na Jiang, Shan Mou, Minfang Zhang, Leyi Gu, Xinghua Shao, Qin Wang, Chaojun Qi, Shu Li, Wanpeng Wang, Xiajing Che, Zhaohui Ni
Iodinated contrast media serves as a direct causative factor of acute kidney injury (AKI) and is involved in the progression of cellular dysfunction and apoptosis. Emerging evidence indicates that NLRP3 inflammasome triggers inflammation, apoptosis and tissue injury during AKI. Nevertheless, the underlying renoprotection mechanism of NLRP3 inflammasome against contrast-induced AKI (CI-AKI) was still uncertain. This study investigated the role of NLRP3 inflammasome in CI-AKI both in vitro and in vivo. In HK-2 cells and unilateral nephrectomy model, NLRP3 and NLRP3 inflammasome member ASC were significantly augmented with the treatment of contrast media...
October 10, 2016: Scientific Reports
Xiaole Su, Xinfang Xie, Lijun Liu, Jicheng Lv, Fujian Song, Vlado Perkovic, Hong Zhang
BACKGROUND: To simultaneously evaluate the relative efficacy of multiple pharmacologic strategies for preventing contrast-induced acute kidney injury (AKI). STUDY DESIGN: Systematic review containing a Bayesian network meta-analysis of randomized controlled trials. SETTING & POPULATION: Participants undergoing diagnostic and/or interventional procedures with contrast media. SELECTION CRITERIA FOR STUDIES: Randomized controlled trials comparing the active drug treatments with each other or with hydration alone...
October 1, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
Hayri Kertmen, Bora Gürer, Erdal Resit Yilmaz, Zeki Sekerci
Endoscopic surgery for lumbar disc herniation has been available for more than 30 years. Transforaminal percutaneous endoscopic lumbar discectomy is a well-known, safe, and effective method used for the treatment of the lumbar disc herniation. The published complications of the transforaminal percutaneous endoscopic lumbar discectomy consist of infections, thrombophlebitis, dysesthesia, dural tear, vascular injury, and death. Seizure after transforaminal percutaneous endoscopic lumbar discectomy is an extremely rare complication...
October 2016: Asian Journal of Neurosurgery
Chong-Fu Jia, Yi-Nong Jiang, Zhi-Qiang Yang, Xi-Xia Sun, Yang Yu, Hao Wang, Yan Lu, Ai-Jun Chen, Zhao-Qian Wang
BACKGROUND: A new feature of coronary computed tomography angiography (CTA) is to estimate ascending aortic elasticity without additional cost, but its applicable benefit for prehypertension patients is still unclear. The aim of this study is to discuss the characteristic of ascending aortic elasticity for specific prehypertension patients and its risk factors. METHODS: Coronary CTA examinations of 398 participants were performed using a 128 slicer CT scanner. The differences of 3 ascending aortic elasticity related indices, including aortic distensibility (AD), aortic compliance (AC), and aortic stiffness (ASI), and anatomical measurements were analyzed among the normal, prehypertension, and primary hypertension groups...
September 29, 2016: American Journal of Hypertension
Jonathan Zipfel, Adrian Kastler, Laurent Tatu, Julien Behr, Rachid Kechidi, Bruno Kastler
BACKGROUND: Two studies recently reported that computed tomography (CT) guided infiltration of the greater occipital nerve at its intermediate site allows a high efficacy rate with long-lasting pain relief following procedure in occipital neuralgia and in various craniofacial pain syndromes. OBJECTIVE: The purpose of our study was to evaluate the technical feasibility and safety of ultrasound-guided intermediate site greater occipital nerve infiltration. STUDY DESIGN: Retrospective study...
September 2016: Pain Physician
D Juricic Nahal, I Cegec, V Erdeljic Turk, M Radacic Aumiler, K Makar Ausperger, R Likic, I Kraljickovic, I Simic
No abstract text is available yet for this article.
October 6, 2016: Clinical Therapeutics
Michele Andreucci, Teresa Faga, Eleonora Riccio, Massimo Sabbatini, Antonio Pisani, Ashour Michael
Contrast-induced acute kidney injury (CI-AKI) is a problem associated with the use of iodinated contrast media, causing kidney dysfunction in patients with preexisting renal failure. It accounts for 12% of all hospital-acquired kidney failure and increases the length of hospitalization, a situation that is worsening with increasing numbers of patients with comorbidities, including those requiring cardiovascular interventional procedures. So far, its diagnosis has relied upon the rise in creatinine levels, which is a late marker of kidney damage and is believed to be inadequate...
2016: International Journal of Nephrology and Renovascular Disease
Cynthia de Almeida Mendes, Alexandre de Arruda Martins, Marcelo Passos Teivelis, Sergio Kuzniec, Andrea Yasbek Monteiro Varella, Nelson Wolosker
BACKGROUND: Iodine contrast medium (ICM) is considered gold standard in endovascular procedures, but nephrotoxicity and hypersensitivity limit its widespread use. Carbon dioxide (CO2) is considered an alternative for endovascular procedures in patients with contraindication to ICM. However no studies have compared the outcomes of EVAR (endovascular aneurysm repair) performed with ICM or CO2 in patients with no contraindication to ICM. METHODS AND RESULTS: From May 2012 to April 2014, 36 patients with abdominal aortic aneurysms underwent EVAR in a prospective, randomized and controlled study...
September 23, 2016: Annals of Vascular Surgery
Basil Vasilios D Thanopoulos, Vlassis Ninios, Petros Dardas, Andreas Giannopoulos, Dan Deleanou, Silvia Iancovici
The standard technique of catheter closure of patent ductus arteriosus (PDA) may be associated with arterial complications particularly in small pediatric patients. The aim of this study was to evaluate whether catheter closure of PDA in small children using an exclusive venous approach is a safe and effective alternative to closure with the standard technique. One hundred-twelve patients, aged 2 to 24 months, were randomly assigned in a 1:1 ratio to catheter closure of PDA using the standard technique (group 1) and an exclusive venous approach (group 2), respectively...
August 23, 2016: American Journal of Cardiology
Robert Damm, Konrad Mohnike, Angelos Gazis, Bela Rogits, Max Seidensticker, Jens Ricke, Maciej Pech
BACKGROUND: As standard bolus triggering in the pulmonary trunk sometimes fails to achieve sufficient enhancement in the pulmonary arteries, the study investigates an alternative, 'delayed' position of the tracking ROI in the descending aorta. MATERIAL/METHODS: Retrospective analysis of 143 patients suspected of pulmonary embolism investigated with 3 different scanners (16 to 80 rows) in clinical routine. Bolus triggering with 120 hounsfield units (HU) was performed using the pulmonary trunk (n=70) or descending aorta (n=73) after application of 70 to 120 mL of contrast agent, Iomeprol 300...
2016: Polish Journal of Radiology
Vincenza Granata, Marco Cascella, Roberta Fusco, Nicoletta dell'Aprovitola, Orlando Catalano, Salvatore Filice, Vincenzo Schiavone, Francesco Izzo, Arturo Cuomo, Antonella Petrillo
Background and Purpose. Contrast media (CM) for magnetic resonance imaging (MRI) may determine the development of acute adverse reactions. Objective was to retrospectively assess the frequency and severity of adverse reactions associated with gadolinium-based contrast agents (GBCAs) injection in patients who underwent MRI. Material and Methods. At our center 10608 MRI examinations with CM were performed using five different GBCAs: Gd-BOPTA (MultiHance), Gd-DTPA (Magnevist), Gd-EOBDTPA (Primovist), Gd-DOTA (Dotarem), and Gd-BTDO3A (Gadovist)...
2016: BioMed Research International
Antonio H Frangieh, Jasmina Alibegovic, Christian Templin, Oliver Gaemperli, Slayman Obeid, Robert Manka, Erik W Holy, Willibald Maier, Thomas F Lüscher, Ronald K Binder
BACKGROUND: Left atrial appendage occlusion (LAAO) is mostly performed by transesophageal echocardiography (TEE) guidance. Intracardiac echocardiography (ICE) may be an alternative imaging modality for LAAO that precludes the need for general anesthesia or sedation. METHODS AND RESULTS: All consecutive single center, single operator LAAO candidates were analyzed. Baseline clinical and procedural characteristics and in-hospital outcomes were compared between patients in whom a Watchman was implanted with ICE vs...
September 21, 2016: Catheterization and Cardiovascular Interventions
W Reith, S Roumia, C Popp
CLINICAL/METHODICAL ISSUE: Neurosarcoidosis is a relatively rare complication of sarcoidosis that occurs in approximately 5-15 % of patients. The clinical picture is variable. Clinically, neurosarcoidosis is mostly manifested as lesions of the cranial nerves (50-70 %) and several cranial nerves are typically affected. This is the result of aseptic granulomatous basal meningitis. Intraparenchymal granulomas also occur, frequently affecting basal near-midline structures, such as the hypothalamus and pituitary glands and can lead to encephalopathy...
October 2016: Der Radiologe
D Kienzl-Palma, H Prosch
CLINICAL/METHODICAL ISSUE: Besides the lungs, tuberculosis (TB) can affect any organ system. In most cases, extrathoracic TB occurs in immunosuppressed patients as part of a severe illness via hematogenous spread. Extrathoracic involvement most commonly involves abdominal organs, especially the urogenital tract and less commonly the central nervous system (CNS) and the musculoskeletal system. Most frequently, computed tomography (CT) is used for detecting extrathoracic TB manifestations, except for CNS and musculoskeletal manifestations, where contrast-enhanced magnetic resonance imaging (MRI) is the gold standard...
October 2016: Der Radiologe
Kouichi Misaki, Naoyuki Uchiyama, Masanao Mohri, Tomoya Kamide, Taishi Tsutsui, Naomi Kanamori, Keisuke Kurokawa, Mitsutoshi Nakada
This is the first report on the mechanism of pseudoaneurysm formation after withdrawal of a stent retriever. A 79-year-old woman developed cardiogenic embolization of the distal middle cerebral artery (M2). The deployed stent retriever bent because of vessel tortuosity. After withdrawal of the stent with strong resistance, complete revascularization was achieved, but an extravasation was detected at the site. Eight hours after disappearance of the extravasation, re-bleeding occurred with aneurysm-like pooling of contrast media...
November 2016: Acta Neurochirurgica
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