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Specialty: Radiology
Condition: Thrombosis
Procedure: Ultrasound

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Total 21 results found since Jan 2013.

Duplex Sonographic Diagnosis of Perinatal Hemorrhagic Stroke.
Abstract Children are particularly at risk for stroke in the neonatal period. Neonatal hemorrhagic stroke is rarer than ischemic stroke. The incidence is 40.7/100 000 live births. Hemorrhagic stroke is caused by a disruption in venous drainage usually due to local thrombosis. As a result of the nonspecific clinical symptoms in this age group, diagnosis is usually made too late. The only relatively specific symptom is a cerebral seizure during the first week of life. Therefore, stroke should be ruled out by diagnostic imaging in the case of any seizure in the first days of life. The diagnostic method of choice is...
Source: Ultraschall in der Medizin - September 26, 2017 Category: Radiology Authors: Deeg KH Tags: Ultraschall Med Source Type: research

Sonographic and Doppler Sonographic Diagnosis of  Neonatal Ischemic Stroke.
Sonographic and Doppler Sonographic Diagnosis of Neonatal Ischemic Stroke. Ultraschall Med. 2017 Jul 13;: Authors: Deeg KH Abstract Children are particularly at risk for stroke in the neonatal period. 1/3 of all strokes in children occur during the perinatal period. The incidence of perinatal stroke is 1:4000. A differentiation is made between ischemic stroke and hemorrhagic stroke. Ischemic strokes are caused by arterial occlusion due to thrombosis or embolism. As a result of the nonspecific clinical symptoms in this age group, diagnosis is usually made too late. The only relatively specific symptom...
Source: Ultraschall in der Medizin - July 13, 2017 Category: Radiology Authors: Deeg KH Tags: Ultraschall Med Source Type: research

Free‐floating thrombus in stroke patients with nonstenotic internal carotid artery—An ultrasonographic study
ConclusionsInternal carotid artery FFT could be found in young stroke patients without identifiable arterial disease and could be resolved with antithrombotic treatment © 2014 Wiley Periodicals, Inc. J Clin Ultrasound, 2014
Source: Journal of Clinical Ultrasound - June 4, 2014 Category: Radiology Authors: Evguenia Vassileva, Marin Daskalov, Paraskeva Stamenova Tags: Research Article Source Type: research

Emergent Endovascular Management of Long-Segment and Flow-Limiting Carotid Artery Dissections in Acute Ischemic Stroke Intervention with Multiple Tandem Stents EXTRACRANIAL VASCULAR
CONCLUSIONS: Emergent stent reconstruction of long-segment and flow-limiting carotid dissections in acute ischemic stroke intervention is safe and effective, with favorable clinical outcomes, allowing successful thrombectomy, vessel salvage, restoration of cerebral perfusion, and/or prevention of recurrent thromboembolic stroke.
Source: American Journal of Neuroradiology - January 10, 2017 Category: Radiology Authors: Ansari, S. A., Kühn, A. L., Honarmand, A. R., Khan, M., Hurley, M. C., Potts, M. B., Jahromi, B. S., Shaibani, A., Gounis, M. J., Wakhloo, A. K., Puri, A. S. Tags: EXTRACRANIAL VASCULAR Source Type: research

Is Sonothrombolysis an Effective Stroke Treatment?
New therapeutic strategies under development aim to improve recanalization rates and clinical outcomes after ischemic stroke. One such approach is ultrasound (US)-enhanced thrombolysis, or sonothrombolysis, which can improve thrombolytic drug actions and even intrinsic fibrinolysis. Although the mechanisms are not fully understood, it is postulated that thrombolysis enhancement is related to nonthermal mechanical effects of US. Recent results indicate that US with or without microbubbles may be effective in clot lysis of ischemic stroke even without additional thrombolytic drugs. Sonothrombolysis is a promising tool for tr...
Source: Journal of Ultrasound in Medicine - June 26, 2013 Category: Radiology Authors: Mijajlovic, M. D., Pavlovic, A. M., Covickovic-Sternic, N. Tags: Review Article Source Type: research

In silico Study of Low-Frequency Transcranial Ultrasound Fields in Acute Ischemic Stroke Patients
Abstract: Ultrasound in the sub-megahertz range enhances thrombolysis and may be applied transcranially to ischemic stroke patients. The consistency of transcranial insonification needs to be evaluated. Acoustic and thermal simulations based on computed-tomography (CT) scans of 20 patients were performed. An unfocused 120-kHz transducer allowed homogeneous insonification of the thrombus, and positioning based on external landmarks performed similarly to an optimized placement based on CT data. With a weakly focused 500-kHz transducer, the landmark-based positioning underperformed. The predicted inter-patient variation of i...
Source: Ultrasound in Medicine and Biology - March 17, 2014 Category: Radiology Authors: Guillaume Bouchoux, Ravishankar Shivashankar, Todd A. Abruzzo, Christy K. Holland Tags: Original Contributions Source Type: research

Postoperative in-stent protrusion is an important predictor of perioperative ischemic complications after carotid artery stenting
Conclusions Postoperative ipsilateral stroke was observed more frequently in patients with demonstrated ISP following CAS.
Source: Journal of Neuroradiology - March 8, 2018 Category: Radiology Source Type: research

Intraoperative Sonography During Carotid Endarterectomy: Normal Appearance and Spectrum of Complications
Carotid endarterectomy is a commonly performed procedure for prevention of stroke related to carotid stenosis. Intraoperative sonography is used to identify potentially correctable technical defects during carotid endarterectomy. The main risk of endarterectomy is perioperative stroke, and great effort has been put into trying to reduce this risk through various surgical techniques and evaluation of the surgical bed. Postoperative carotid thrombosis, or thombo-embolization from the arterectomy site, remains a common cause of perioperative stroke and is often related to technical defects in the arterial reconstruction proce...
Source: Journal of Ultrasound in Medicine - April 24, 2015 Category: Radiology Authors: Weinstein, S., Mabray, M. C., Aslam, R., Hope, T., Yee, J., Owens, C. Tags: Pictorial Essay Source Type: research

Internal Carotid Artery Floating Thrombus in Relapsing Polychondritis
We present a 52‐year‐old man without any known risk factors for stroke, treated with prednisone and azathioprine for relapsing polychondritis, who presented a minor left hemisphere stroke. Ultrasound of the neck vessels revealed an isoechogenic thrombus in the left internal carotid artery superimposed on a smooth moderately stenosing isoechogenic atheroma of the carotid bulb. The patient was treated with high‐dose tinzaparin and was followed with serial ultrasound. After 16 days, the thrombus demonstrated a hypoechogenic core surrounded by a hyperechogenic rim and the following day it resolved completely. Thrombus fo...
Source: Journal of Neuroimaging - February 23, 2014 Category: Radiology Authors: Theodoros Karapanayiotides, Konstantinos Kouskouras, Panagiotis Ioannidis, Eleni Polychroniadou, Nikolaos Grigoriadis, Dimitrios Karacostas Tags: Case Report Source Type: research

The Role of Neurosonology in the Diagnosis and Management of Patients with Carotid Artery Disease: A Review
ABSTRACT Carotid artery disease (CAD) is a common cause of ischemic stroke with high rates of recurrence. Carotid endarterectomy (CEA) or carotid artery stenting (CAS) are highly recommended for the secondary prevention of symptomatic CAD during the first 14 days following the index event of transient ischemic attack or minor stroke. CEA or CAS may also be offered in selected cases with severe asymptomatic stenosis. Herein, we review the utility of neurosonology in the diagnosis and pre‐/peri‐interventional assessment of CAD patients who undergo carotid revascularization procedures. Carotid ultrasound may provide inval...
Source: Journal of Neuroimaging - January 1, 2018 Category: Radiology Authors: Odysseas Kargiotis, Apostolos Safouris, Georgios Magoufis, Maria Georgala, Andromachi Roussopoulou, Eleftherios Stamboulis, Konstantinos G. Moulakakis, Andreas Lazaris, George Geroulakos, Spyros Vasdekis, Georgios Tsivgoulis Tags: Views and Reviews Source Type: research

New Insights into Mechanisms of Sonothrombolysis Using Ultra-High-Speed Imaging
Abstract: Thrombotic arterial occlusion is the principal etiology for acute cardiovascular syndromes such as stroke, myocardial infarction and unstable angina. Exposing the thrombus to ultrasound and microbubbles facilitates thrombus disruption, making “sonothrombolysis” a potentially powerful therapeutic strategy for thromboembolic diseases. However, optimization of such a strategy, and hence clinical translation, is constrained by an incomplete understanding of mechanisms by which ultrasound-induced microbubble vibrations disrupt blood clots. We posit that previously reported sonothrombolytic efficacy using inertial ...
Source: Ultrasound in Medicine and Biology - October 21, 2013 Category: Radiology Authors: Xucai Chen, Jonathan E. Leeman, Jianjun Wang, John J. Pacella, Flordeliza S. Villanueva Tags: Technical Note Source Type: research

Computed tomography angiography vs 3 T black-blood cardiovascular magnetic resonance for identification of symptomatic carotid plaques
Conclusions: Bb-CMR is superior to MDCTA at identifying symptomatic carotid plaques, while MDCTA offers high specificity at the cost of low sensitivity. Results were only slightly improved over bb-CMR alone when combining both techniques.
Source: Journal of Cardiovascular Magnetic Resonance - October 7, 2014 Category: Radiology Authors: Jochen GrimmAndreas SchindlerFlorian SchwarzClemens CyranAnna Bayer-KarpinskaTobias FreilingerChun YuanJennifer LinnMiguel TrellesMaximilian ReiserKonstantin NikolaouTobias Saam Source Type: research

Etiology of Intracranial Arterial Stenosis: Are Transcranial Color‐Coded Duplex Ultrasound and 3T Black Blood MR Imaging Complementary?
CONCLUSIONSThese two combined imaging techniques might be promising for the differentiation of arteriosclerotic changes from stenosis of another origin, especially when follow‐up TCCD studies are completed early before a possible regression of the atherosclerotic plaque that might be observed 6 months after initial diagnosis.
Source: Journal of Neuroimaging - November 24, 2015 Category: Radiology Authors: Fabienne Perren, Maria I. Vargas, Odysseas Kargiotis Tags: Clinical Investigative Study Source Type: research