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Specialty: Radiology
Condition: Thrombosis

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Total 469 results found since Jan 2013.

Intraarterial urokinase for thrombus migration after mechanical thrombectomy for large vessel ischemic stroke
CONCLUSION: The results of this study suggest that intraarterial urokinase for MeVO with thrombus migration after MT may safely improve angiographic reperfusion.PMID:34939475 | DOI:10.1177/15910199211069464
Source: Interventional Neuroradiology - December 23, 2021 Category: Radiology Authors: Hiroaki Neki Takehiro Katano Takuma Maeda Aoto Shibata Hiroyuki Komine Yuichiro Kikkawa Source Type: research

An old thrombus may potentially identify patients at higher risk of poor outcome in anterior circulation stroke undergoing thrombectomy
ConclusionThe presence of old thrombi, particularly those with focal hemosiderin, may aid in identifying patients with acute ischemic anterior circulation stroke who are at a higher risk of poor clinical outcome at 3-month follow-up.
Source: Neuroradiology - October 21, 2022 Category: Radiology Source Type: research

Clot-based time attenuation curve as a novel imaging predictor of mechanical thrombectomy functional outcome in acute ischemia stroke
ConclusionsThrombus TAC on CTP were found to be a promising new imaging biomarker to predict the outcomes of MT in AIS.Clinical relevance statementThis study revealed that clot-based time attenuation curve based on admission perfusion CT could reflect the permeability and composition of thrombus and, also, provide valuable information to predict the clinical outcomes of mechanical thrombectomy in patients with acute ischemia stroke.Key Points• Two time-attenuation curves distributions achieved strong correlations (|r|= 0.627, p <  0.001) with histopathological results.• The unimodal time-attenuation curve was ...
Source: European Radiology - September 14, 2023 Category: Radiology Source Type: research

Stroke, Superior Vena Cava Syndrome, and the Snowman in the Chest Roentgenogram
A 55-year-old man had left hemiparesis 1 month earlier, followed by progressive swelling and dilated nonpulsatile veins over the chest, neck, and upper arm (A, arrows) along with a pulsatile swelling over the right infraclavicular and parasternal area. A chest x-ray (B) showed a widened superior mediastinum with a “figure of 8” appearance. Transthoracic echocardiogram showed a dilated left ventricle (LV) with severe aortic regurgitation (G, Online Video 1). The ascending aorta (AA) was aneurysmally dilated, with a mobile thrombus (asterisk) attached to its wall (E, Online Video 2). Bicaval view (F, Online Video 3) sho...
Source: Journal of the American College of Cardiology: Cardiovascular Imaging - July 22, 2013 Category: Radiology Source Type: research

Can Shape Analysis Differentiate Free-floating Internal Carotid Artery Thrombus from Atherosclerotic Plaque in Patients Evaluated with CTA for Stroke or Transient Ischemic Attack?
Conclusions: We identified five quantitative shape descriptors of carotid FFT. This shape “signature” shows potential for supplementing conventional lesion characterization in cases of suspected FFT.
Source: Academic Radiology - February 8, 2014 Category: Radiology Authors: Rebecca E. Thornhill, Cheemun Lum, Arash Jaberi, Pawel Stefanski, Carlos H. Torres, Franco Momoli, William Petrcich, Dar Dowlatshahi Tags: Original Investigations 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

Relationship of Thrombus Length to Number of Stent Retrievals, Revascularization, and Outcomes in Acute Ischemic Stroke
To study the relationship between intracranial thrombus length and number of stent retrievals, revascularization rates, and functional outcomes in stroke.
Source: Journal of Vascular and Interventional Radiology : JVIR - July 3, 2014 Category: Radiology Authors: Gaurav Jindal, Timothy Miller, Ravi Shivashankar, Jason Mitchell, Barney J. Stern, Karen Yarbrough, Dheeraj Gandhi Source Type: research

MR angiography findings in infants with neonatal arterial ischemic stroke in the middle cerebral artery territory: A prospective study using circle of Willis MR angiography
Publication date: Available online 6 May 2016 Source:European Journal of Radiology Author(s): Béatrice Husson, Lucie Hertz-Pannier, Catherine Adamsbaum, Cyrille Renaud, Emilie Presles, Mickael Dinomais, Manoelle Kossorotoff, Pierre Landrieu, Stéphane Chabrier Aim Neonatal arterial ischemic stroke (NAIS) results from a focal disruption of the blood flow in a cerebral artery by a not well understood mechanism. Our objective is to describe the acute MRangiography (MRA) findings in infants with an NAIS in the middle cerebral artery (MCA) territory and correlate them with early parenchymal infarcts and motor outcom...
Source: European Journal of Radiology - May 6, 2016 Category: Radiology Source Type: research

The Impact of CT Perfusion Threshold on Predicted Viable and Nonviable Tissue Volumes in Acute Ischemic Stroke
CONCLUSIONTwo commonly used tissue definitions generated significantly different lesion volumes and mismatch ratios. Threshold selection may have significant impact on patient selection for trials or reperfusion therapies.
Source: Journal of Neuroimaging - April 17, 2017 Category: Radiology Authors: Xuya Huang, Dheeraj Kalladka, Bharath Kumar Cheripelli, Fiona Catherine Moreton, Keith W. Muir Tags: Clinical Investigative Study Source Type: research

MRI quantitative T2* mapping on thrombus to predict recanalization after endovascular treatment for acute anterior ischemic stroke
Conclusion A new quantitative MRI biomarker, the Thrombus-T2* relaxation time is assessable in clinical routine. In a preliminary study of 30 patients, a shorter Thombus-T2* relaxation time is related to earlier recanalization after EVT using combination of stent retriever and aspiration.
Source: Journal of Neuroradiology - May 4, 2017 Category: Radiology Source Type: research

Correlation of Thrombectomy Maneuver Count with Recanalization Success and Clinical Outcome in Patients with Ischemic Stroke INTERVENTIONAL
CONCLUSIONS: An increasing maneuver count correlates strongly with a decreasing probability of both good outcome and recanalization. The probability of successful recanalization decreases below 50% if not achieved within 5 thrombectomy maneuvers. Patients who are recanalized within 2 maneuvers have the best chance of achieving a good clinical outcome.
Source: American Journal of Neuroradiology - July 12, 2017 Category: Radiology Authors: Seker, F., Pfaff, J., Wolf, M., Ringleb, P. A., Nagel, S., Schönenberger, S., Herweh, C., Möhlenbruch, M. A., Bendszus, M., Pham, M. Tags: INTERVENTIONAL Source Type: research

Histopathological and Bacteriological Analysis of Thrombus Material Extracted During Mechanical Thrombectomy in Acute Stroke Patients
ConclusionsIn our series, systematic histopathological and bacteriological study of the MT samples allowed a higher proportion of SE diagnosis in comparison with previous reports.
Source: CardioVascular and Interventional Radiology - October 26, 2017 Category: Radiology Source Type: research

4:21 PM Abstract No. 360 Impact of catheter size, balloon occlusion, and presence of posterior communicating artery during aspiration from internal carotid artery: stroke model of middle cerebral artery (M1 segment) using 3D printing cerebrovascular flow model
To clarify the impact of following factors during suction from large-bore catheter at internal carotid artery (ICA) using 3D printing circulation model simulating stroke due to middle cerebral artery (MCA) occlusion. 1. Catheter size, 8F vs. 9F 2. Balloon occlusion (BO) at cervical ICA, (+) vs. (-) 3. Presence of posterior communicating artery (PCOM), (+) vs. (-).
Source: Journal of Vascular and Interventional Radiology : JVIR - February 27, 2018 Category: Radiology Authors: M. Horikawa, T. Nakanishi, K. Hashimoto, R. Priest, K. Farsad, H. Bozorgchami Tags: Scientific Session 36: Venous: Thrombus Management Source Type: research