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Total 5918 results found since Jan 2013.

The balloon occlusion sheath for stroke (BOSS) balloon guide catheter for stroke intervention: Safety and technical success
CONCLUSIONS: The BOSSTM balloon-guide catheter is a safe and technically effective adjunctive device for mechanical thrombectomy of acute ischemic stroke due to large vessel occlusion.PMID:37649344 | DOI:10.1177/15910199231198273
Source: Interventional Neuroradiology - August 31, 2023 Category: Radiology Authors: Joshua A Cuoco John J Entwistle Farhan Siddiq Ajit S Puri Keith Woodward Ricardo A Hanel Sameer A Ansari Donald Frei Biraj M Patel Source Type: research

Microcatheter to Recanalization (Procedure Time) Predicts Outcomes in Endovascular Treatment in Patients with Acute Ischemic Stroke: When Do We Stop? INTERVENTIONAL
CONCLUSIONS: Procedure time in patients with acute ischemic stroke appears to be a critical determinant of outcomes following endovascular treatment. This highlights the need for procedure time guidelines for patients being considered for endovascular treatment in acute ischemic stroke.
Source: American Journal of Neuroradiology - February 13, 2013 Category: Radiology Authors: Hassan, A. E., Chaudhry, S. A., Miley, J. T., Khatri, R., Hassan, S. A., Suri, M. F. K., Qureshi, A. I. Tags: INTERVENTIONAL Source Type: research

Evidence of Changes in Brain Tissue Stiffness After Ischemic Stroke Derived From Ultrasound-Based Elastography
Conclusions The differences between intrahemispheric averages of shear moduli of the brains of animals with stroke at 24 and 72 hours after stroke induction likely reflect the initial formation of edema and reduction of cerebral blood flow known to develop ipsilateral to ischemic infarction, the known transient increase in intracranial pressure, as well as the known initial reduction of blood flow and subsequent development of edema in the contralateral hemisphere (diaschisis). Thus, elastography offers a possible method to detect subtle changes in brain after ischemic stroke.
Source: Journal of Ultrasound in Medicine - February 26, 2013 Category: Radiology Authors: Xu, Z. S., Lee, R. J., Chu, S. S., Yao, A., Paun, M. K., Murphy, S. P., Mourad, P. D. Tags: Original Research Source Type: research

Vascular changes after stroke in the rat: a longitudinal study using optimized magnetic resonance imaging
During stroke, the reduction of blood flow leads to undersupply of oxygen and nutrients and, finally, to cell death, but also to upregulation of pro‐angiogenic molecules and vascular remodeling. However, the temporal profile of vascular changes after stroke is still poorly understood. Here, we optimized steady‐state contrast‐enhanced magnetic resonance imaging (SSCE MRI) and followed the dynamic changes in vascular architecture for up to 4 weeks after transient middle cerebral artery occlusion (MCAO) in rats. Using MRI diffusion measurements and the changes of transversal relaxation rates ΔR2 and after injection of ...
Source: Contrast Media and Molecular Imaging - June 6, 2013 Category: Radiology Authors: Philipp Boehm‐Sturm, Tracy D. Farr, Joanna Adamczak, Jan F. Jikeli, Luam Mengler, Dirk Wiedermann, Therése Kallur, Valerij Kiselev, Mathias Hoehn Tags: Full Paper Source Type: research

Mechanical Thrombectomy for Acute Ischemic Stroke: A Case Study Using the Penumbra Stroke System
Abstract: Over recent years, there have been dramatic advances in the ability to treat an acute ischemic stroke. Thrombolysis with intravenous recombinant tissue plasminogen activator can now be performed up to 4.5 hr after stroke onset in certain circumstances, and new mechanical thrombectomy devices allow intervention up to and beyond 8 hr in some instances. The Penumbra Stroke System (Penumbra Inc., Alameda, CA), one of these mechanical thrombectomy devices, uses a series of catheters to aspirate thrombus from occluded cerebral arteries and thus restore flow to the adjacent ischemic brain.This case study highlights the ...
Source: Journal of Radiology Nursing - June 1, 2013 Category: Radiology Authors: Michelle M. Rohde, Susan J. Pazuchanics, Gayle Watson, Jessica M. Vesek, Einar Bogason, Kevin M. Cockroft Tags: Featured Articles Source Type: research

Society of Interventional Radiology Position Statement on Endovascular Acute Ischemic Stroke Interventions
In February 2013, the world of stroke interventions changed. Three trials were presented at the 2013 International Stroke Conference and then published in the New England Journal of Medicine: Interventional Management of Stroke (IMS) III (1), Local Systemic Thrombolyis for Acute Ischemic Stroke (SYNTHESIS) Expansion (), and Mechanical Retrieval and Recanalization of Stroke Clots Using Embolectomy (MR RESCUE) (), each of which concluded that intraarterial (IA) ischemic stroke revascularization provided no significant benefit over intravenous (IV) thrombolysis with tissue plasminogen activator (tPA) or standard of care. In a...
Source: Journal of Vascular and Interventional Radiology : JVIR - July 26, 2013 Category: Radiology Authors: David Sacks, J.J. (Buddy) Connors, Carl M. Black Tags: Special Focus: Venous Access Source Type: research

Eligibility Determination for Intravenous Thrombolysis Based on Radiology Interpretation Report of the Head CT Scan in Patients with Acute Ischemic Stroke
CONCLUSIONOur study demonstrates that administering IV t‐PA to patients based on the stroke team's interpretation of the CT scan versus review of the radiology interpretation does not lead to significant differences in clinical outcome, aICH, or sICH.
Source: Journal of Neuroimaging - September 9, 2013 Category: Radiology Authors: Ameer E. Hassan, Shahram Majidi, Nazli A. Janjua, Saqib A. Chaudhry, Wondwossen G. Tekle, Mikayel Grigoryan, Adnan I. Qureshi Tags: Clinical Investigative Study Source Type: research

Interventional Stroke Therapy
Interventional treatment of acute ischemic stroke is currently a “very hot topic,” because acute stroke is a leading cause of disability and one of the most common causes of death worldwide. Ischemic stroke represents 80% to 85% of all strokes. Acute occlusion of cerebral arteries is the most frequent cause of ischemic stroke. Stroke mortality varies between 10% and 17% during the first month, and only about 30% of ischemic stroke patients are independent after 3 mo. Early re-canalization of the occluded brain artery is associated with a significantly higher chance of independence after 90 d and with a significant redu...
Source: Ultrasound in Medicine and Biology - September 3, 2013 Category: Radiology Authors: David Školoudík Tags: Book Reviews Source Type: research

Imaging Recommendations for Acute Stroke and Transient Ischemic Attack Patients: A Joint Statement by the American Society of Neuroradiology, the American College of Radiology, and the Society of NeuroInterventional Surgery WHITE PAPER
SUMMARY: Stroke is a leading cause of death and disability worldwide. Imaging plays a critical role in evaluating patients suspected of acute stroke and transient ischemic attack, especially before initiating treatment. Over the past few decades, major advances have occurred in stroke imaging and treatment, including Food and Drug Administration approval of recanalization therapies for the treatment of acute ischemic stroke. A wide variety of imaging techniques has become available to assess vascular lesions and brain tissue status in acute stroke patients. However, the practical challenge for physicians is to understand t...
Source: American Journal of Neuroradiology - November 15, 2013 Category: Radiology Authors: Wintermark, M., Sanelli, P. C., Albers, G. W., Bello, J., Derdeyn, C., Hetts, S. W., Johnson, M. H., Kidwell, C., Lev, M. H., Liebeskind, D. S., Rowley, H., Schaefer, P. W., Sunshine, J. L., Zaharchuk, G., Meltzer, C. C. Tags: WHITE PAPER Source Type: research

Combined Low-Dose Contrast-Enhanced MR Angiography and Perfusion for Acute Ischemic Stroke at 3T: A More Efficient Stroke Protocol EVIDENCE-BASED MEDICINE LEVEL 2
CONCLUSIONS: In patients with acute stroke, combined low-dose contrast-enhanced MRA and dynamic susceptibility contrast perfusion at 3T is feasible and results in significant scan time and contrast dose reductions.
Source: American Journal of Neuroradiology - June 11, 2014 Category: Radiology Authors: Nael, K., Meshksar, A., Ellingson, B., Pirastehfar, M., Salamon, N., Finn, P., Liebeskind, D. S., Villablanca, J. P. Tags: EVIDENCE-BASED MEDICINE LEVEL 2 Source Type: research

Imaging of acute stroke prior to treatment: Current practice and evolving techniques.
Abstract Standard imaging in acute stroke is undertaken with the aim of diagnosing the underlying cause and excluding stroke mimics. In the presence of ischaemic stroke, imaging is also needed to assess patient suitability for treatment with intravenous thrombolysis. Non-contrast CT is predominantly used but MRI can also exclude any contra-indications to thrombolysis treatment. Advanced stroke imaging such as CT and MR angiography and perfusion imaging are increasingly used in an acute setting. In this review, we discuss the evidence for the application of these advanced techniques in the imaging of acute stroke. ...
Source: The British Journal of Radiology - June 17, 2014 Category: Radiology Authors: Mair G, Wardlaw JM Tags: Br J Radiol Source Type: research

Possible Morphological Pathomechanisms of Ischemic Stroke in the Posterior Circulation of Patients with Vertebral Artery Hypoplasia
CONCLUSIONIn patients with VAH, the combination of several pathomechanisms of ischemic stroke and the contribution of several risk factors can cause the clinical manifestation of PCS.
Source: Journal of Neuroimaging - July 1, 2014 Category: Radiology Authors: Andrea Skultéty Szárazová, Eva Bartels, Susanne Bartels, Peter Turčáni Tags: Clinical Investigative Study Source Type: research

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