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Association between thrombus composition and stroke etiology in the MR CLEAN Registry biobank
ConclusionThrombus composition is significantly associated with stroke etiology, with an increase in RBC and a decrease in F/P raising the odds for a non-cardioembolic cause. No difference between composition of cardioembolic thrombi and of undetermined origin was seen. This emphasizes the need for more extensive monitoring for arrhythmias and/or extended cardiac analysis in case of an undetermined origin.
Source: Neuroradiology - April 15, 2023 Category: Radiology Source Type: research

Infarct Evolution in Patients with Anterior Circulation Large-Vessel Occlusion Randomized to IV Alteplase and Endovascular Treatment versus Endovascular Treatment Alone INTERVENTIONAL
CONCLUSIONS: No statistically significant difference in infarct evolution was found in directly admitted patients who received IV alteplase and endovascular treatment within 4.5 hours of symptom onset versus patients who underwent endovascular treatment alone. Collateral status and occlusion location may be useful predictors of infarct evolution prognosis in patients eligible for IV alteplase who underwent endovascular treatment.
Source: American Journal of Neuroradiology - April 10, 2023 Category: Radiology Authors: Hoving, J. W., van Voorst, H., Kappelhof, M., Tolhuisen, M., Treurniet, K. M., LeCouffe, N. E., Rinkel, L. A., Koopman, M. S., Cavalcante, F., Konduri, P. R., van den Wijngaard, I. R., Ghariq, E., Anton Meijer, F. J., Coutinho, J. M., Marquering, H. A., R Tags: INTERVENTIONAL Source Type: research

Unsupervised Deep Learning for Stroke Lesion Segmentation on Follow-up CT Based on Generative Adversarial Networks FUNCTIONAL
CONCLUSIONS: An unsupervised generative adversarial network can be used to obtain automated infarct lesion segmentations with a moderate Dice similarity coefficient and good volumetric correspondence.
Source: American Journal of Neuroradiology - August 8, 2022 Category: Radiology Authors: van Voorst, H., Konduri, P. R., van Poppel, L. M., van der Steen, W., van der Sluijs, P. M., Slot, E. M. H., Emmer, B. J., van Zwam, W. H., Roos, Y. B. W. E. M., Majoie, C. B. L. M., Zaharchuk, G., Caan, M. W. A., Marquering, H. A., on behalf of the CONTR Tags: FUNCTIONAL Source Type: research

Diagnostic reference levels and median doses for common clinical indications of CT: findings from an international registry
ConclusionsDRLs for CTDIvol and DLP for EUCLID clinical indications from diverse organizations were established and can contribute to dose optimization. These values were usually significantly higher in the US than in Europe.Key Points•Registry data were used to create benchmarks for 10 common indications for CT identified by the European Society of Radiology.•Observed US radiation doses were higher than European for 9 of 10 indications (except chronic sinusitis).•The presented diagnostic reference levels and median doses highlight potentially unnecessary variation in radiation dose.
Source: European Radiology - October 13, 2021 Category: Radiology Source Type: research

Nico.Lab partners with AI Advance for distribution
Dutch artificial intelligence (AI) software developer Nico.Lab has signed A...Read more on AuntMinnie.comRelated Reading: FDA OKs Nico.Lab's AI stroke software
Source: AuntMinnie.com Headlines - April 2, 2021 Category: Radiology Source Type: news

Prediction of long-term recurrent ischemic stroke: the added value of non-contrast CT, CT perfusion, and CT angiography
ConclusionData from CT imaging significantly improved the discriminatory performance and reclassification in predicting ischemic stroke recurrence beyond a model incorporating clinical risk factors only.
Source: Neuroradiology - March 17, 2021 Category: Radiology Source Type: research

Validation of automated Alberta Stroke Program Early CT Score (ASPECTS) software for detection of early ischemic changes on non-contrast brain CT scans
ConclusionThe performance of automated ASPECTS is comparable to expert readers and could support readers in the detection of early ischemic changes.
Source: Neuroradiology - March 17, 2021 Category: Radiology Source Type: research

Effect of Heparinized Flush Concentration on Safety and Efficacy During Endovascular Thrombectomy for Acute Ischemic Stroke: Results from the  MR CLEAN Registry
ConclusionEffect of heparin in flush fluids should not be ignored by clinicians or researchers as higher concentrations may be associated with higher rates of ICH. The observed variation in protocols regarding heparin concentrations between EVT centers should encourage further studies, ideally in a controlled way, resulting in recommendations on heparin use in flush fluids in future guidelines.
Source: CardioVascular and Interventional Radiology - January 3, 2021 Category: Radiology Source Type: research

CT Scanning in Suspected Stroke or Head Trauma: Is it Worth Going the Extra Mile and Including the Chest to Screen for COVID-19 Infection? ADULT BRAIN
CONCLUSIONS: The sensitivity of additional chest CT is fairly high. However, a negative result does not exclude COVID-19. The positive predictive value is poor. Correlation of chest CT results with epidemiologic history and clinical presentation, along with real-time reverse transcriptase polymerase chain reaction, is needed for confirmation.
Source: American Journal of Neuroradiology - July 12, 2020 Category: Radiology Authors: Kwee, R. M., Krdzalic, J., Fasen, B. A. C. M., de Jaegere, T. M. H., for the COVID-19 CT Investigators South-East Netherlands (CISEN) Study Group Tags: ADULT BRAIN Source Type: research

Radiology workload in clinical implementation of thrombectomy for acute ischemic stroke: experience from The Netherlands
ConclusionOur study estimated the number of stroke patients undergoing CTA for suspected LVO and those eligible for thrombectomy in relation to the population. Numbers were essentially the same throughout the week, and during office and on-call hours. Our data can be used to make adequate staffing plans.
Source: Neuroradiology - April 4, 2020 Category: Radiology Source Type: research

7T MRI sheds new light on risks associated with stroke
Using 7-tesla MRI, Dutch researchers have identified the three most influential...Read more on AuntMinnie.comRelated Reading: 7T MRI finds promising MS biomarker 7T MRI opens door to detailed brain images 7T MRI warrants its own set of safety guidelines 7T MRI shows path to MS progression 7T finds epilepsy abnormalities missed at lower field strengths
Source: AuntMinnie.com Headlines - March 19, 2020 Category: Radiology Source Type: news

Balloon Guide Catheter in Endovascular Treatment for Acute Ischemic Stroke: Results from the MR CLEAN Registry
ConclusionsIn clinical practice, use of a BGC was associated with higher reperfusion grade and early improvement of neurologic deficits, but had no positive effect on long-term functional outcome.
Source: Journal of Vascular and Interventional Radiology - September 19, 2019 Category: Radiology Source Type: research

Effect of sildenafil on maternal hemodynamics in pregnancies complicated by severe early-onset fetal growth restriction: planned subgroup analysis from a multicenter randomized placebo-controlled double-blind trial.
CONCLUSIONS: Sildenafil in a dose of 25 mg three times daily increases HR, reduces BP and reduces arterial stiffness in pregnancies complicated by FGR. These changes are modest, consistent with the anticipated vasodilatory effect and their clinical impact on the mother and baby, in both the short- and long-term, remains uncertain. This article is protected by copyright. All rights reserved. PMID: 31432556 [PubMed - as supplied by publisher]
Source: The Ultrasound Review of Obstetrics and Gynecology - August 19, 2019 Category: Radiology Authors: Khalil A, Sharp A, Cornforth C, Jackson R, Mousa H, Stock S, Harrold J, Turner MA, Kenny LC, Baker PN, Johnstone ED, von Dadelszen P, Magee L, Papageorghiou AT, Alfirevic Z Tags: Ultrasound Obstet Gynecol Source Type: research

Prevalence and vascular risk factors of basal ganglia calcifications in patients at risk for cerebrovascular disease
Conclusions In this study with patients suspected of acute ischemic stroke, basal ganglia calcifications were common and significantly associated with older age and lower BMI.
Source: Journal of Neuroradiology - April 27, 2019 Category: Radiology Source Type: research

Flow Patterns in Carotid Webs: A Patient-Based Computational Fluid Dynamics Study EXTRACRANIAL VASCULAR
CONCLUSIONS: Carotid webs are associated with increased recirculation zones and regional increased wall shear stress metrics that are associated with disturbed flow. These findings suggest that a carotid web might stimulate thrombus formation, which increases the risk of acute ischemic stroke.
Source: American Journal of Neuroradiology - April 10, 2019 Category: Radiology Authors: Compagne, K. C. J., Dilba, K., Postema, E. J., van Es, A. C. G. M., Emmer, B. J., Majoie, C. B. L. M., van Zwam, W. H., Dippel, D. W. J., Wentzel, J. J., van der Lugt, A., Gijsen, F. J. H., for the MR CLEAN investigators Tags: EXTRACRANIAL VASCULAR Source Type: research

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