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Specialty: Radiology
Condition: Thrombosis

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Total 469 results found since Jan 2013.

Susceptibility-weighted Imaging in Neurovascular Disease
Abstract: Susceptibility-weighted imaging (SWI) has become an important imaging sequence in the evaluation of patients with neurovascular disease. In this review, we provide a general overview of the physics of SWI and describe how image contrast is produced with this technique. We provide a general approach and differential diagnosis for 2 commonly encountered radiographic patterns seen with SWI in neurovascular disease. Finally, we discuss specific neurovascular applications of SWI, including its application in acute stroke, vascular malformations, venous thrombosis, and evaluation of cerebral microbleeds.
Source: Topics in Magnetic Resonance Imaging - April 1, 2016 Category: Radiology Tags: Review Articles Source Type: research

Uterine Artery Embolization Resulting in Catastrophic Antiphospholipid Syndrome in a Patient with Primary Antiphospholipid Syndrome
Antiphospholipid syndrome (APS) is a chronic autoimmune disorder characterized by vascular thrombosis and miscarriages associated with the presence of antiphospholipid antibodies. APS is estimated to affect at least 1% of the population, and deep vein thrombosis (DVT) is the main manifestation, followed by stroke and pulmonary embolism. Catastrophic APS (CAPS) is a life-threatening variant. In CAPS, which affects
Source: Journal of Vascular and Interventional Radiology : JVIR - April 20, 2016 Category: Radiology Authors: Christopher Watura, Deirdre Shawe, Nigel Hacking Source Type: research

Dabigatran Versus Warfarin in Relation to Renal Function in Patients With Atrial Fibrillation
The pivotal RE-LY (Randomized Evaluation of Long-Term Anticoagulation Therapy) trial demonstrated that dabigatran (150 mg twice daily) was superior to warfarin in reducing thromboembolism with a similar risk of major bleeding (1). Because renal dysfunction increases the risk of thromboembolism and bleeding and dabigatran has significant renal clearance, establishing its comparative effectiveness versus warfarin across the range of renal function is critical in determining the optimal treatment for patients with atrial fibrillation (AF). Indeed, an interaction between renal function and major bleeding risk has been previous...
Source: Journal of the American College of Cardiology: Cardiovascular Imaging - June 27, 2016 Category: Radiology 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 23, 2015 Category: Radiology Authors: Fabienne Perren, Maria I. Vargas, Odysseas Kargiotis Tags: Original Research Source Type: research

Prediction of Carotid Intraplaque Hemorrhage Using Adventitial Calcification and Plaque Thickness on CTA EXTRACRANIAL VASCULAR
CONCLUSIONS: The CTA rim sign of adventitial calcification with internal soft plaque is highly predictive of carotid intraplaque hemorrhage.
Source: American Journal of Neuroradiology - August 11, 2016 Category: Radiology Authors: Eisenmenger, L. B., Aldred, B. W., Kim, S.- E., Stoddard, G. J., de Havenon, A., Treiman, G. S., Parker, D. L., McNally, J. S. Tags: EXTRACRANIAL VASCULAR Source Type: research

Duration of Dual Antiplatelet Therapy: A Systematic Review for the 2016 ACC/AHA Guideline Focused Update on Duration of Dual Antiplatelet Therapy in Patients With Coronary  Artery Disease A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines
ConclusionsThe primary analysis provides moderately strong evidence that prolonged DAPT after implantation of newer-generation DES entails a tradeoff between reductions in stent thrombosis and MI and increases in major hemorrhage. Secondary analyses provide weak evidence of increased mortality with prolonged DAPT after DES implantation. In patients whose coronary thrombotic risk was defined by a prior MI rather than by DES implantation, the primary analysis provides moderately strong evidence of reduced cardiovascular events at the expense of increased bleeding.
Source: Journal of the American College of Cardiology: Cardiovascular Imaging - August 29, 2016 Category: Radiology Source Type: research

Thrombolysis in Real Time: Demonstration of Revascularization with Intravenous Thrombolysis Therapy in the CT Scanner
CONCLUSIONEarly recanalization of large‐vessel occlusion after intravenous thrombolysis results in unique imaging findings.
Source: Journal of Neuroimaging - August 31, 2016 Category: Radiology Authors: Jessica Tan, Aimee Aysenne, Vineeta Singh Tags: Clinical Investigative Study Source Type: research

Impact and Effectiveness of Dual Aspiration Technique in Stent-Assisted Mechanical Thrombectomy: Recent Improvements in Acute Stroke Management
ConclusionsThe dual aspiration technique with an additional intermediate guide catheter placed closed to the stent retriever leads to decreased procedure time in the anterior circulation. Even in cases with higher thrombus load and treated in DAT, clinical outcome improved.
Source: CardioVascular and Interventional Radiology - October 6, 2016 Category: Radiology Source Type: research

Incidence, Predictors, and Mid-Term Outcomes of Possible Leaflet Thrombosis After TAVR
Conclusions HALT with reduced leaflet motion was not rare but usually subclinical. Valve hemodynamics and mid-term outcomes were uneventful even without additional anticoagulant therapy in our limited number of cases. Male sex, larger sinus and bioprosthesis size, and elevated D-dimer levels during follow-up were associated with this phenomenon.
Source: Journal of the American College of Cardiology: Cardiovascular Imaging - January 1, 2017 Category: Radiology Authors: Yanagisawa, R., Hayashida, K., Yamada, Y., Tanaka, M., Yashima, F., Inohara, T., Arai, T., Kawakami, T., Maekawa, Y., Tsuruta, H., Itabashi, Y., Murata, M., Sano, M., Okamoto, K., Yoshitake, A., Shimizu, H., Jinzaki, M., Fukuda, K. Tags: Original Research Source Type: research

Resolution of Occlusive Carotid Artery Thrombus Treated with Anticoagulation as Demonstrated on Duplex Ultrasonography
CONCLUSIONDifferentiation between a stenotic plaque and occlusive thrombus can be achieved by ultrasonographic analysis of thrombus morphology, attachment site potential, and characteristics of a resolving thrombus. Systemic anticoagulation can safely and effectively eliminate the risk for future embolization and complete occlusion of the carotid artery in patients who present with transient ischemic events or completed infarcts of small size.
Source: Journal of Neuroimaging - May 1, 2017 Category: Radiology Authors: Laura Stein, John W. Liang, Jesse Weinberger Tags: Short Communication Source Type: research

Successful mechanical thrombectomy in a comatose patient with cerebral venous sinus thrombosis: A case report.
This report presents a case of successful mechanical thrombectomy, without the use of thrombolytics, in a comatose patient with cerebral venous sinus thrombosis. PMID: 28513255 [PubMed - as supplied by publisher]
Source: Interventional Neuroradiology - May 18, 2017 Category: Radiology Tags: Interv Neuroradiol Source Type: research

Clot Imaging in Large Vessel Occlusion Strokes
Abstract: Advances in mechanical thrombectomy techniques have resulted in improved, recanalization and functional outcomes in acute stroke, as demonstrated in recent, randomized trials comparing mechanical thrombectomy with thrombolysis. In conjunction with the technological advancements in thrombectomy devices, there has been better appreciation of stricter patient selection criteria for endovascular therapy based on pre-procedural imaging, including clot location, infarct volume, and penumbral territory at risk. Pre-procedural imaging performed to assess suitability for endovascular therapy commonly provides information ...
Source: Topics in Magnetic Resonance Imaging - May 19, 2017 Category: Radiology Tags: Review Articles Source Type: research

Intraprocedural Thrombus Fragmentation During Interventional Stroke Treatment: A Comparison of Direct Thrombus Aspiration and Stent Retriever Thrombectomy
ConclusionWhen retrieving of the primary thrombus is possible, ADAPT results in comparable reperfusion grades as do stent retrievers. This suggests that comparable distraction forces act on the thrombus and that both techniques possess a comparable risk of periprocedural thrombus fragmentation. SAH exclusively occurred after using stent retrievers, which may further promote ADAPT as safe and fast initial front-line approach.
Source: CardioVascular and Interventional Radiology - June 2, 2017 Category: Radiology Source Type: research

The Thrombolytic Effect of Diagnostic Ultrasound–Induced Microbubble Cavitation in Acute Carotid Thromboembolism
Conclusions: High MI 20-microsecond pulse duration impulses during a commercial microbubble infusion can be used to recanalize acutely thrombosed carotid arteries and restore downstream flow without anticoagulants. However, this effect is only seen with SC-inducing impulses and not at higher mechanical indices, when a paradoxical reversal of the thrombolytic effect is observed. Diagnostic ultrasound–induced SC can be a nonsurgical method of dissolving CA thrombi and preventing thromboembolization.
Source: Investigative Radiology - July 8, 2017 Category: Radiology Tags: Original Articles Source Type: research

MRI Interscanner Agreement of the Association between the Susceptibility Vessel Sign and Histologic Composition of Thrombi
CONCLUSIONThe diagnostic accuracy of SVS to determine thrombus composition varies significantly among MRI scanners. Normalization of T2*sequences between scanners may be needed to better predict thrombus composition in multicenter studies.
Source: Journal of Neuroimaging - August 3, 2017 Category: Radiology Authors: Romain Bourcier, Lili D étraz, Jean Michel Serfaty, Beatrice Guyomarch Delasalle, Mahmood Mirza, Imad Derraz, Frédérique Toulgoat, Olivier Naggara, Claire Toquet, Hubert Desal Tags: Experimental Laboratory Research Source Type: research