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Yukawa Satomi S Osaka City Public Health Office, Abeno-ku, Osaka, - - 2014
A 36-year-old man presented with acute cerebral infarction in the right frontal lobe associated with right internal carotid artery dissection (CAD). Enhanced computed tomography revealed right greater horn of the hyoid bone in close proximity to the right internal carotid artery (ICA). It was speculated that mechanical compression of the ...
Ryu C-W CW From the Departments of Radiology (C.-W.R., G.-H.J.) and Neurosurgery (H.S.S.), Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, Korea. - - 2014
High-resolution MR imaging can depict intracranial arterial atherosclerotic plaques. Our aim was to evaluate the relationship between the degree of enhancement of MCA plaques on contrast-enhanced high-resolution MR imaging and ischemic stroke and stenosis severity. This study enrolled 36 patients diagnosed with moderate-to-severe atherosclerotic MCA stenosis. A contrast-enhanced T1-weighted volume ...
Boddu S R SR From the Departments of Radiology and Imaging Sciences (S.R.B., F.C.T., S.D., J.E.D., A.M.S.) and Neurological Surgery (F.C.T., J.E.D.), Emory University School of Medicine, Atlanta, Georgia. - - 2014
Endovascular reconstruction and flow diversion by using the Pipeline Embolization Device is an effective treatment for complex cerebral aneurysms. Accurate noninvasive alternatives to DSA for follow-up after Pipeline Embolization Device treatment are desirable. This study evaluated the accuracy of contrast-enhanced time-resolved MRA for this purpose, hypothesizing that contrast-enhanced time-resolved MRA ...
Shi Yi Y Center of Molecular Cardiology, University of Zurich, Zurich, Switzerland; Zurich Center for Integrative Human Physiology (ZHIP), University of Zurich, Zurich, Switzerland; Biomedical Research Center, Zhongshan Hospital, Fudan University, Shanghai, - - 2014
Aging is an independent risk factor for cardiovascular and cerebrovascular disease. To date, little is known about the mechanisms of aging of cerebral arteries and whether the aging gene p66(Shc) is implicated in it. The present study was designed to assess age-induced vascular dysfunction in cerebral and systemic arteries of ...
Eikermann-Haerter Katharina K Neurovascular Research Laboratory, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, - - 2014
Migraine increases the risk of stroke, particularly in young and otherwise healthy adults. Being the most frequent neurological condition, migraine prevalence is on a par with that of other common stroke risk factors, such as diabetes or hypertension. Several patterns of association have emerged: (1) migraine and stroke share a ...
Zink Jill N JN East Carolina University, Department of Cardiovascular Sciences, Greenville, North - - 2014
A 44-year-old man with a type A dissection repair 5 years earlier presented with progressive enlargement of the residual arch and thoracic aorta. Flow into the false lumen from the distal aortic suture line was evident on contrast-enhanced computed tomography. Through a redo hemisternotomy, the false lumen was accessed directly. ...
Tobochnik Steven D SD *Departments of Neurology, †Surgery, and ‡Anesthesiology, Temple University School of Medicine, Philadelphia, Pennsylvania, - - 2014
Intraoperative EEG monitoring is increasingly used during aortic arch procedures for early detection of acute neurologic dysfunction. In those procedures involving cardiopulmonary bypass, increased neuroprotection may be gained by using hypothermic circulatory arrest and selective cerebral perfusion. Several techniques for cerebral perfusion exist; yet no studies have noted distinct EEG ...
Roganović Jelena - - 2014
Atherosclerotic-occlusive changes could be observed in orofacial branches of the external carotid artery. Atherosclerosis-induced ischemia caused alteration in production and release of endothelial factors. The aim of this study was to investigate the influence of carotid artery occlusion (10, 30 and 60 min) on vascular effects of norepinephrine (NOR) and ...
Shah Ashish A University hospital of Wales, Cardiff, CF14 4XW, UK. Electronic address: - - 2014
Ascending aortic dissection is a life threatening surgical emergency and carries high peri-operative mortality. Various biological adhesive materials are commonly used in such a surgery to enhance strengthening of separated layers of aortic wall. Despite of extensive use, embolization of the glue material remains a feared complication. Here we are ...
Shukla P P Department of Pharmaceutical Sciences, North Dakota State University, Fargo, ND 58108, - - 2014
Maternal nutrient restriction and decreased scotophase concentrations of melatonin have been associated with severely compromised pregnancies. We hypothesized that melatonin supplementation in a compromised pregnancy enhances the bradykinin (BK)-induced relaxations of placental arteries thereby ensuring sufficient umbilical blood flow to the developing fetus. Pregnant ewes (n = 31) were fed an adequate ...
Kiuchi Kunihiko K Department of Cardiology, Himeji Cardiovascular Center, Himeji, Hyogo, - - 2014
A 64-year-old man with palpitations was referred to our center for catheter ablation due to perimitral macroreentrant atrial tachycardia (MRT) after a coronary artery bypass graft (CABG) procedure. Two years after the first procedure with a mitral isthmus ablation, a symptomatic MRT recurred. This article is protected by copyright. All ...
Zhou Pei P Department of Ultrasound, Wuhan General Hospital of Guangzhou Military Region, Wuhan, Hubei, - - 2014
We lack noninvasive and effective methods for evaluating origin of pelvic hemorrhage. Contrast-enhanced ultrasound (CEUS) may be a prospective method. We aimed to investigate the diagnostic value of CEUS on external iliac artery (EIA) bleeding in rabbits. Fourteen rabbits were evenly divided into small- and big-crevasse groups. EIAs of rabbits ...
Malayeri Ashkan A AA Russell H. Morgan Department of Radiology, Johns Hopkins Hospital, Baltimore, MD, - - 2014
This study aims to correlate coronary artery enhancement levels with quality of vessel visualization and calcified plaque visualization using a 128-slice dual-source CT (DSCT) scanner. Coronary CT angiography exams from 52 patients, mean age of 55 years (range, 22-90) and mean weight of 184 lbs (range, 120-320 lbs), were reviewed retrospectively. Contrast infusion ...
Zhang Guoming G MS, Department of Ultrasound, or Hong Shen, MS, Department of Cardiology, General Hospital of Jinan Military Command, 250031 Jinan, China. - - 2014
Objectives- The purpose of this study was to show the contrast-enhanced sonographic features of various levels of renal artery rupture and to validate the therapeutic effects of percutaneous 915-MHz microwave ablation compared to hemostatic drug injection (batroxobin) using an in vivo canine renal artery injury model. Methods- Three renal artery ...
Su I-Chang IC Division of Neuroradiology, Department of Medical Imaging, Toronto Western Hospital, 399 Bathurst St., 3 McLaughlin Wing, Room #425, Toronto, ON, M5T 2S8, - - 2014
Perianeurysmal edema and aneurysm wall enhancement are previously described phenomenon after coil embolization attributed to inflammatory reaction. We aimed to demonstrate the prevalence and natural course of these phenomena in unruptured aneurysms after endovascular treatment and to identify factors that contributed to their development. We performed a retrospective analysis of ...
Ohno Yoshiharu Y 1 Advanced Biomedical Imaging Research Center, Kobe University Graduate School of Medicine, Kobe, - - 2014
OBJECTIVE. The purpose of this article is to prospectively and directly compare the capabilities of non-contrast-enhanced MR angiography (MRA), 4D contrast-enhanced MRA, and contrast-enhanced MDCT for assessing pulmonary vasculature in patients with non-small cell lung cancer (NSCLC) before surgical treatment. SUBJECTS AND METHODS. A total of 77 consecutive patients (41 ...
Nederhoed Johanna H JH Department of Surgery, VU University Medical Center, Amsterdam, The - - 2014
Acute peripheral arterial thrombosis can be threatening to life and limb. Dissolution of the thrombus local catheter-directed intra-arterial infusion of fibrinolytic agents such as urokinase is the standard therapy for thrombosis; however, this method is time-intensive, and amputation of the affected limb is still needed in 10-30% of cases. Furthermore, ...
Rylander Helena H 1Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, - - 2014
Five cats presented with acute-onset neurological signs. Magnetic resonance imaging in four cats showed a T2-weighted hyperintense spinal cord lesion that was mildly contrast-enhancing in three cats. Owing to inflammatory cerebrospinal fluid changes three cats were treated with immunosuppression. One cat was treated with antibiotics. All cats improved initially, but ...
Anderson Mark M Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, - - 2014
This case highlights the utility of agitated saline studies during transesophageal echocardiography (TEE) for detection of pulmonary arteriovenous malformations (PAVM) as a viable alternative to contrast-enhanced imaging studies. By carefully studying each pulmonary vein individually during saline contrast studies, TEE is able to demonstrate and localize PAVM. In addition, this ...
Izamis Maria-Louisa ML Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, - - 2014
Handling of donor organs frequently introduces air into the microvasculature, but little is known about the extent of damage caused as a function of embolism size and distribution. Here we introduced differently-sized embolisms into either the portal vein and hepatic artery, or both, during the flushing stage of porcine liver ...
Knight Jason S JS Internal Medicine, University of Michigan Medical - - 2014
Neutrophil extracellular trap (NET) formation promotes vascular damage, thrombosis, and activation of interferon-α-producing plasmacytoid dendritic cells in diseased arteries. Peptidylarginine deiminase (PAD) inhibition is a strategy that can decrease in vivo NET formation. To test whether PAD inhibition, a novel approach to targeting arterial disease, can reduce vascular damage and ...
Shibukawa Narihiro N Department of Gastroenterology and Hepatology, Osaka General Medical Center, Osaka, - - 2014
An 84-year-old woman was admitted to our hospital with a massive lower intestinal bleeding (LIB). The enhanced CT showed extravasation of blood in the sigmoid colon during the arterial phase. After discussion with the interventional radiologists, we proceeded to perform emergency colonoscopy that demonstrated massive gushing of blood from a ...
Platzek Ivan I 0000-0002-5933-8108 Department of Radiology, Dresden University Hospital, Fetscherstraße 74, 01307 Dresden, - - 2014
Purpose. The aim of this study was to assess the correlation of 3D time-of-flight MR angiography (TOF MRA) and contrast-enhanced MR angiography (CEMRA) for carotid artery stenosis evaluation at 3T. Material and Methods. Twenty-three patients (5 f, 18 m; mean age 61 y, age range 45-78 y) with internal carotid artery stenosis detected with ...
Murakami Kenji K Department of Radiology, St Marianna University Yokohama City Seibu Hospital, Yokohama, Kanagawa, - - 2014
We present a case of a 70-year-old man with abdominal aortic aneurysm and coincident pelvic arteriovenous malformation (AVM). Before the operation for the aneurysm, we embolised the pelvic AVM that had multiple feeding arteries and an aneurysmal-dilated draining vein. After decreasing the number of the feeding arteries by coil embolisation, ...
Jain Pritesh P PP Ludwig Boltzmann Institute for Lung Vascular Research, University of Graz, Graz, - - 2014
Prostacyclin analogues are standard therapeutic options for vasoconstrictive diseases, including pulmonary hypertension and Raynaud's phenomenon. Although effective, these treatment strategies are expensive and have several side effects. To improve drug efficiency, we tested liposomal nanoparticles as carrier systems. In this study, we synthesized liposomal nanoparticles tailored for the prostacyclin analogue ...
Morita Yusuke Y 0000-0002-5850-3175 Cardiovascular Center, Tazuke Kofukai Medical Research Institute, Kitano Hospital, 2-2-20 Ogimachi, Kita-ku, Osaka 530-8480, - - 2014
The mechanisms responsible for the development of apical aneurysms in cases of hypertrophic cardiomyopathy (HCM) are currently unclear but likely involve multiple factors. Here, we present a case of HCM with marked subendocardial fibrosis involving the apical and proximal portions of the left ventricle. A 71-year-old man with left ventricular ...
Stephens Maximilian M 0000-0003-2684-6621 University of Queensland School of Medicine, Herston Road, Herston, Brisbane, QLD 4006, Australia ; Department of Medical Imaging, Mater Misericordiae Hospital, Raymond Terrace, South Brisbane, QLD 4101, - - 2014
The nutcracker phenomenon is usually caused by compression of the left renal vein by the superior mesenteric artery anteriorly and the aorta posteriorly, although variations of this anatomy have previously been reported. We observed a nutcracker phenomenon in a 42-year-old female who underwent portal venous phase computed tomography of the ...
Toba Michie M Department of Pharmacology and Internal Medicine, the Center for Lung Biology, University of South Alabama, College of Medicine, Mobile, - - 2013
A major limitation in the pharmacological treatment of pulmonary arterial hypertension (PAH) is the lack of pulmonary vascular selectivity. Recent studies have identified a tissue-penetrating homing peptide, CARSKNKDC (CAR), which specifically homes to hypertensive pulmonary arteries but not to normal pulmonary vessels or other tissues. Some tissue-penetrating vascular homing peptides ...
Ghista Dhanjoo N - - 2013
In this paper, coronary arterial bypass grafting hemodynamics and anastomosis designs are reviewed. The paper specifically addresses the biomechanical factors for enhancement of the patency of coronary artery bypass grafts (CABGs). Stenosis of distal anastomosis, caused by thrombosis and intimal hyperplasia (IH), is the major cause of failure of CABGs. ...
Itagaki Michael W - - 2013
Particle embolotherapy for liver cancers, such as chemoembolization and yttrium-90 radioembolization, depends on microcatheter selection of the treatment vessel for injection of the embolic. Individually selecting vessels with a microcatheter can be time-consuming and difficult, especially when multiple branches are present in the treatment zone. This article describes a technique ...
Amano Masashi - - 2013
We report a case of a 35-year-old woman who was diagnosed with a giant coronary artery aneurysm (CAA) with a fistula and followed-up using the contrast-enhanced computed tomography scan and 2-dimensional transthoracic echocardiography. The diameter and volume cubic content of the giant CAA had increased linearly during the 12-year follow-up ...
Nakanishi Koji - - 2013
Non-anastomotic graft rupture is a rare but critical complication after abdominal aortic aneurysm (AAA) repair. Therefore, identifying the rupture sites is important to perform endovascular stent grafting. A 78-year old man who had undergone Y-grafting for infrarenal AAA before 17 years was referred to our hospital with the complaints of ...
Tzeis Stylianos S Cardiology Department, Henry Dunant Hospital, Athens - - 2013
In the present case, we describe the abrupt transformation of intra-pulmonary vein activity from rapid firing to dissociated ectopic activity during sinus rhythm, as an easily identifiable, though rare to encounter, sign which documents the achievement of bidirectional block.
Leonard Sean - - 2013
Dynamic control of maternal blood flow to the placenta is critical for healthy pregnancy. In many tissues, microvasculature arteries control flow. The uterine/endometrial vascular bed changes during pregnancy include physiological remodeling of spiral arteries from constricted artery-like structures to dilated vein-like structures between gestation days (gd) 8 and 12 in ...
Kay Fernando Uliana - - 2013
The aim of the study was to compare the effects of different respiratory maneuvers in computed tomography pulmonary angiography for the diagnosis of pulmonary embolism (PE) on the contrast enhancement of pulmonary circulation and on the quality of lung window images. A retrospective analysis of 520 examinations, half obtained after ...
Xia Yang Y Division of Pulmonary and Critical Care Medicine, Johns Hopkins Asthma and Allergy Center, 5501 Hopkins Bayview Circle, Baltimore, MD 21224. - - 2014
Hypoxic pulmonary hypertension is characterized by increased vascular tone, altered vasoreactivity, and vascular remodeling, which are associated with alterations in Ca(2+) homeostasis in pulmonary arterial smooth muscle cells. We have previously shown that classical transient receptor potential 1 and 6 (TRPC1 and TRPC6) are upregulated in pulmonary arteries (PAs) of ...
Renne Julius - - 2013
Computed tomography pulmonary angiography (CTPA) is used most often in routine clinical practice for the assessment of a suspected pulmonary embolism. The diagnostic accuracy relies on sufficient contrast enhancement.Purpose: To evaluate whether image acquisition during shallow breathing can improve the image quality in patients with insufficient contrast enhancement during breath-hold ...
Horie Kenji - - 2013
Recently, transient inferior vena cava (IVC) filters have been employed to protect against pulmonary embolism (PE) in pregnant women with deep vein thrombosis. A 34-year-old primiparous Japanese woman with a history of myomectomy was diagnosed with deep vein thrombosis by ultrasound at 27 weeks of gestation. Unfractionated heparin was administered, ...
Ueda Yuichiro - - 2013
Azygos vein aneurysm is very rare and most cases are detected incidentally. We report a safe resection of azygos vein aneurysm by video-assisted thoracoscopic surgery (VATS) under preoperative evaluation of thrombus by multidetector computed tomography (MDCT). A 60-year old woman presented to our department due to a mediastinal mass revealed ...
Ou Hsin-You - - 2013
OBJECTIVE. Fibrosis leads to altered liver hemodynamics. The arterial enhancement fraction, which is defined as the ratio of hepatic arterial perfusion to the total hepatic perfusion, can provide noninvasive assessment of hepatic perfusion. The aim of this study was to show that the arterial enhancement fraction values correlate with histopathologic ...
Paramasivam Srinivasan - - 2013
Onyx as an embolization agent for the management of vascular malformation is well established. We report our initial experience with dimethyl-sulphoxide (DMSO) compatible double lumen balloon catheters used for Onyx embolization. Between December 2011 and March 2013, we treated 22 patients aged between 1.5 to 70years with two types of DMSO ...
Fina Caroline - - 2013
Canine pulmonary eosinophilic granulomatosis is a rare inflammatory pulmonary disease characterized by formation of eosinophilic granulomas that tend to obliterate the normal pulmonary architecture. The purpose of this retrospective study was to describe the CT characteristics of confirmed idiopathic pulmonary eosinophilic granulomatosis in a group of dogs. Five dogs met ...
van Amerongen M J - - 2013
MR angiography is proposed as a safer and less expensive alternative to the reference standard, DSA, in the follow-up of intracranial aneurysms treated with endovascular coil occlusion. We performed a systematic review and meta-analysis to evaluate the accuracy of TOF-MRA and contrast-enhanced MRA in detecting residual flow in the follow-up ...
Ribeiro Henrique B - - 2013
We report two cases of high-risk aortic stenosis treated with the SAPIEN 3 valve. This is the first procedure performed with this type of valve through the transapical approach. This new balloon-expandable valve incorporates a lower profile cobalt-chromium stent and an additional outer skirt to enhance paravalvular sealing. The procedure ...
Hori Daijiro D Department of Cardiovascular Surgery, Fujigaoka Hospital, Showa University, Kanagawa, - - 2013
Rupture of a bronchial artery aneurysm occurs rarely and may mimic aortic dissection. A 78-year-old-man was admitted with sudden chest pain. Chest radiography showed widening of the mediastinum, suggestive of aortic dissection, but contrast-enhanced computed tomography revealed hemomediastinum and bronchial artery aneurysm. Although open surgery has been the first choice ...
Takayama Toshio - - 2013
Abdominal aortic aneurysm (AAA) is one of the leading causes of death in the United States. Approximately 80% of AAAs occur in the infrarenal abdominal aorta. Most are caused by a degenerative process in the aortic wall, and smoking is the risk factor most strongly associated with AAA. Contrast-enhanced computed ...
Chau Katherine H - - 2013
Thoracic aortic aneurysms (TAAs) are a prevalent and deadly disease that, without diagnosis and treatment, eventuates in life-threatening aortic dissection or rupture. While TAAs normally grow in an indolent manner, once a certain size (a "hinge point") is reached, the risk of dissection, rupture, and death increases dramatically. By virtue ...
Mineyko Aleksandra - - 2013
INTRODUCTION: Large/medium vessel vasculitis is an important etiology of childhood stroke. Early research suggests vessel wall enhancement on postcontrast MRI may be a marker of intracranial vasculitis yet no systematic descriptions of normal periarterial enhancement exist in the literature. The aim was to describe normal periarterial enhancement in the pediatric ...
Phillips Helen M - - 2013
AIMS: Anomalies of the arterial valves, principally bicuspid aortic valve (BAV), are the most common congenital anomalies. The cellular mechanisms that underlie arterial valve development are poorly understood. Whilst it is known that the valve leaflets derive from the outflow cushions, which are populated by cells derived from the endothelium ...
Ueyama Takeshi - - 2013
BACKGROUND: Ischemia suppresses action potentials (AP) by elevating interstitial K(+) and activating KATP channels, and alters cytosolic Ca(2+) transients (CaT) via metabolic inhibition. OBJECTIVE: This study tested the hypothesis that AP and CaT respond to ischemia with different spatiotemporal courses and patterns. METHODS: Thirty-four transmural wedges were isolated from canine ...
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