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Specialty: Radiology
Condition: Thrombosis

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Total 469 results found since Jan 2013.

Novel Thrombectomy System for Below-the-Knee and Visceral Arterial Interventions: PRISM Retrospective Interim Results
Existing endovascular options in the treatment of peripheral and visceral arterial thromboembolism face the challenges of incomplete revascularization and significant bleeding risk (among other complications). The Penumbra/Indigo Systems (Alameda, California) are designed to address these challenges by providing a novel approach to mechanical thrombo-embolectomy in the periphery using a trackable, relatively small diameter aspiration system that has a proven track record in the treatment of ischemic stroke.
Source: Journal of Vascular and Interventional Radiology : JVIR - December 24, 2014 Category: Radiology Authors: R.R. Saxon, C. Teigen Source Type: research

A potential role of ECG-gated CT for the diagnosis of pulmonary vein thrombus: an illustrative case report
The presence of tumor thrombus in patients with lung cancer confers a risk of stroke and other end-organ ischemic events. This case highlights a potential role for electrocardiogram (ECG)-gated computed tomography (CT) in the diagnosis of this pathologic process. In this case, pulmonary vein thrombus was definitively identified by an ECG-CT following discordant results between CT and transthoracic echocardiogram. In addition, this case demonstrates how management decisions are affected by physician accessibility to and familiarity with specific imaging tests.
Source: Clinical Imaging - November 21, 2014 Category: Radiology Authors: Michael A. Winkler, Paul von Herrmann, Ryan H. Penticuff, Palak M. Majmudar, Benjamin R. Plaisance, Stephen B. Hobbs, Michael A. Brooks Tags: Case Report Source Type: research

Stent-thrombus interaction and the influence of aspiration on mechanical thrombectomy: evaluation of different stent retrievers in a circulation model
Conclusion Distal aspiration with intermediate catheters increases the efficacy of mechanical thrombectomy with stent retrievers significantly. In contrary to earlier suggestions, the interaction between the thrombus and the stent retriever is only superficial, rather than an integration of the thrombus into the retriever. No significant differences between the proven devices could be shown in our model.
Source: Neuroradiology - April 24, 2015 Category: Radiology Source Type: research

Clot Through the Heart: Paradoxical Embolism With Thrombus-in-Transit at Multidetector Computed Tomography
We present the case of a 67-year-old man with concomitant stroke and pulmonary embolism 1 day after radiofrequency catheter ablation for refractory atrial tachycardia. A chest computed tomographic angiogram revealed “thrombus-in-transit” across a patent foramen ovale, confirming the diagnosis of paradoxical embolism. Paradoxical embolism is a rare definitive diagnosis. Our case is a key demonstration of the even rarer instance where such a diagnosis is confirmed at multidetector computed tomography.
Source: Journal of Computer Assisted Tomography - July 1, 2015 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Triple Therapy…Can We Replace More With Better? ∗
Triple therapy, or the use of oral anticoagulation (OAC) in addition to dual antiplatelet therapy (DAPT), is common among patients who have undergone percutaneous coronary intervention (PCI) and have concurrent indications for anticoagulation, such as atrial fibrillation (AF) or mechanical valve replacements. Patients are started on this therapy because of a concern for thrombotic events such as myocardial infarction, stent thrombosis, or embolic stroke. Unfortunately, this potent antithrombotic regimen also exposes patients to increased bleeding. While clinicians were quick to grasp the dangers of thrombotic events, only ...
Source: Journal of the American College of Cardiology: Cardiovascular Imaging - August 3, 2015 Category: Radiology Source Type: research

Alternative technique for clot retrieval: The "tip of the iceberg" technique.
We present a variation of the classical technique of stent retriever thrombectomy which we found helpful in two patients presenting with acute stroke. CT angiography in both patients demonstrated thrombus within a middle cerebral artery M2 branch. In both cases the occluded artery was not visualized on DSA and only the proximal tip of the clot could be seen as a filling defect "hanging" into the parent artery reminiscent of a "tip of an iceberg". Rather than selectively catheterizing the occluded branch we placed the stent retriever in the patent parent artery crossing only the tip of the clot. In both cases one pass of th...
Source: Interventional Neuroradiology - October 18, 2015 Category: Radiology Tags: Interv Neuroradiol Source Type: research

Morphologic Features of Carotid Plaque Rupture Assessed by Optical Coherence Tomography EXTRACRANIAL VASCULAR
CONCLUSIONS: Plaque rupture was common in high-grade stenosis and was located at the shoulder of the carotid plaque close to the bifurcation. A cap thickness of <130 μm was the threshold for plaque rupture in the carotid artery.
Source: American Journal of Neuroradiology - November 13, 2015 Category: Radiology Authors: Shindo, S., Fujii, K., Shirakawa, M., Uchida, K., Enomoto, Y., Iwama, T., Kawasaki, M., Ando, Y., Yoshimura, S. Tags: EXTRACRANIAL VASCULAR 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

Cerebral Blood and CSF Flow Patterns in Patients Diagnosed for Cerebral Venous Thrombosis - An Observational Study
Conclusions: CVT produces highly individualized pattern of disturbance in venous blood drainage. Complementary to MRI venography, PC-MRI provides non-invasive data about venous blockage consequences on CSF flow disturbances.
Source: Journal of Clinical Imaging Science - July 28, 2012 Category: Radiology Authors: Souraya ElSankariMarek CzosnykaPierre LehmannMarc-Etienne MeyerHervé DeramondOlivier Balédent Source Type: research

Idiopathic Thrombus in the Common Carotid Artery on Digital Subtraction Angiography
Anand Alurkar, Lakshmi Sudha Prasanna Karanam, Suresh Nayak, Sagar OakJournal of Clinical Imaging Science 2012 2(1):20-20In the present study, we discuss the accuracy of digital subtraction angiography (DSA) in diagnosis of thrombus in the common carotid artery and its role in the medical management of this disorder. Between 2006 and 2011, four patients (age group ranging from 26 to 48 years) presented to our institution with symptoms of stroke. DSA in all these patients showed cigar-shaped filling defect in the common carotid artery. All the patients were managed successfully with anticoagulation treatment. Follow-up Dupl...
Source: Journal of Clinical Imaging Science - April 28, 2012 Category: Radiology Authors: Anand AlurkarLakshmi Sudha Prasanna KaranamSuresh NayakSagar Oak Source Type: research

Endovascular treatment of acute extracranial carotid artery occlusion.
Abstract Acute extracranial internal carotid artery (ICA) occlusions resulting in ischemic stroke are different from other forms of acute occlusions of cerebral vessels. The pathophysiological process involved in occlusion of the extracranial ICA is similar to processes observed in acute occlusion of the coronary arteries. The occluded segment of the ICA predominantly consists of an atherosclerotic plaque and a superimposed thrombus. Although the value of endovascular therapy has been established for intracranial occlusions, the acute treatment of extracranial ICA occlusions has not yet been proven in randomized s...
Source: Der Radiologe - January 4, 2016 Category: Radiology Authors: Boutchakova M, Papanagiotou P Tags: Radiologe Source Type: research

Assessment of left and right atrial 3D hemodynamics in patients with atrial fibrillation: a 4D flow MRI study
Abstract Atrial fibrillation (AF) is associated with embolic stroke due to thrombus formation in the left atrium (LA). Based on the relationship of atrial stasis to thromboembolism and the marked disparity in pulmonary versus systemic thromboembolism in AF, we tested the hypothesis that flow velocity distributions in the left (LA) versus right atrium (RA) in patients with would demonstrate increased stasis. Whole heart 4D flow MRI was performed in 62 AF patients (n = 33 in sinus rhythm during imaging, n = 29 with persistent AF) and 8 controls for the assessment of in vivo atrial 3D blood flow. 3D segmentation ...
Source: The International Journal of Cardiovascular Imaging - January 28, 2016 Category: Radiology Source Type: research

Mechanical thrombectomy with Solitaire AB stents for the treatment of intracranial venous sinus thrombosis.
CONCLUSION: Mechanical thrombectomy with Solitaire AB stents is safe and effective for the treatment of CVST and can significantly improve clinical symptoms. The occurrence of complications is low, and the prognosis is favorable. PMID: 26953230 [PubMed - as supplied by publisher]
Source: Acta Radiologica - March 7, 2016 Category: Radiology Authors: Ma J, Shui S, Han X, Guo D, Li TF, Yan L Tags: Acta Radiol Source Type: research

Radiological and clinical features of cerebral sinovenous thrombosis in newborns and older children
Conclusion Male patients are at higher risk for CSVT than females. In neonates, involvement of the deep venous structures is significantly more common. Brain parenchymal and extraparenchymal changes occur more frequently in this age group than in older children.
Source: Journal of Neuroradiology - March 11, 2016 Category: Radiology Source Type: research