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Source: American Journal of Neuroradiology

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Total 580 results found since Jan 2013.

Impact of Vessel Wall MR Imaging in the Work-Up for Ischemic Stroke COMMENTARIES
Source: American Journal of Neuroradiology - October 7, 2019 Category: Radiology Authors: Song, J. W. Tags: COMMENTARIES Source Type: research

Defining Ischemic Core in Acute Ischemic Stroke Using CT Perfusion: A Multiparametric Bayesian-Based Model ADULT BRAIN
CONCLUSIONS: We established thresholds for the Bayesian model to estimate the ischemic core. The described multiparametric Bayesian-based model improved consistency in CTP estimation of the ischemic core compared with the methodology used in current clinical routine.
Source: American Journal of Neuroradiology - September 3, 2019 Category: Radiology Authors: Nael, K., Tadayon, E., Wheelwright, D., Metry, A., Fifi, J. T., Tuhrim, S., De Leacy, R. A., Doshi, A. H., Chang, H. L., Mocco, J. Tags: ADULT BRAIN Source Type: research

The Association between FLAIR Vascular Hyperintensity and Stroke Outcome Varies with Time from Onset ADULT BRAIN
CONCLUSIONS: FLAIR vascular hyperintensity is associated with unfavorable outcome within 6 hours to 14 days of onset, while the wider distribution of distal FLAIR vascular hyperintensity may be favorable beyond 14 days of onset in MCA infarction. Symptom-to-MR imaging time should be considered when assessing the prognostic value of FLAIR vascular hyperintensity.
Source: American Journal of Neuroradiology - August 13, 2019 Category: Radiology Authors: Shang, W. J., Chen, H. B., Shu, L. M., Liao, H. Q., Huang, X. Y., Xiao, S., Hong, H. Tags: ADULT BRAIN Source Type: research

Leukoaraiosis May Confound the Interpretation of CT Perfusion in Patients Treated with Mechanical Thrombectomy for Acute Ischemic Stroke INTERVENTIONAL
CONCLUSIONS: In patients with stroke, the presence of leukoaraiosis confounds the interpretation of CTP despite proper adjustment of CBF thresholds.
Source: American Journal of Neuroradiology - August 13, 2019 Category: Radiology Authors: Rudilosso, S., Laredo, C., Vivancos, C., Urra, X., Llull, L., Renu, A., Obach, V., Zhao, Y., Moreno, J. L., Lopez-Rueda, A., Amaro, S., Chamorro, A. Tags: INTERVENTIONAL Source Type: research

One-Stop Management with Perfusion for Transfer Patients with Stroke due to a Large-Vessel Occlusion: Feasibility and Effects on In-Hospital Times INTERVENTIONAL
CONCLUSIONS: In this small series, one-stop management with perfusion led to a significant reduction of in-hospital times compared with our previous workflow.
Source: American Journal of Neuroradiology - August 13, 2019 Category: Radiology Authors: Brehm, A., Tsogkas, I., Maier, I. L., Eisenberger, H. J., Yang, P., Liu, J.- M., Liman, J., Psychogios, M.- N. Tags: INTERVENTIONAL Source Type: research

Distal Balloon Angioplasty of Cerebral Vasospasm Decreases the Risk of Delayed Cerebral Infarction INTERVENTIONAL
CONCLUSIONS: Our study suggests that distal balloon angioplasty is safe and decreases the risk of delayed cerebral infarction and the recurrence of vasospasm compared with conventional angioplasty. It fails to show a clinical benefit possibly because of confounding changes in adjuvant therapies of vasospasm during the study period.
Source: American Journal of Neuroradiology - August 13, 2019 Category: Radiology Authors: Labeyrie, M.- A., Gaugain, S., Boulouis, G., Zetchi, A., Brami, J., Saint-Maurice, J.- P., Civelli, V., Froelich, S., Houdart, E. Tags: INTERVENTIONAL Source Type: research

Impact of Skull Defects on the Role of CTA for Brain Death Confirmation ADULT BRAIN
CONCLUSIONS: CTA had a high diagnostic accuracy and reproducibility to confirm brain death in patients with an intact skull. The modified Frampas criteria increased the sensitivity of CTA, particularly in patients with a skull defect. A concurrent skull defect, especially craniectomy, can decrease the sensitivity of CTA to confirm brain death.
Source: American Journal of Neuroradiology - July 7, 2019 Category: Radiology Authors: Nunes, D. M., Maia, A. C. M., Boni, R. C., da Rocha, A. J. Tags: ADULT BRAIN Source Type: research

Ensemble of Convolutional Neural Networks Improves Automated Segmentation of Acute Ischemic Lesions Using Multiparametric Diffusion-Weighted MRI ADULT BRAIN
CONCLUSIONS: Acute infarcts are more accurately segmented using ensembles of convolutional neural networks trained with multiparametric maps than by using a single model trained with a solo map. Automated lesion segmentation has high agreement with manual techniques for identifying patients with large lesion volumes.
Source: American Journal of Neuroradiology - June 11, 2019 Category: Radiology Authors: Winzeck, S., Mocking, S. J. T., Bezerra, R., Bouts, M. J. R. J., McIntosh, E. C., Diwan, I., Garg, P., Chutinet, A., Kimberly, W. T., Copen, W. A., Schaefer, P. W., Ay, H., Singhal, A. B., Kamnitsas, K., Glocker, B., Sorensen, A. G., Wu, O. Tags: ADULT BRAIN Source Type: research

A Novel Collateral Imaging Method Derived from Time-Resolved Dynamic Contrast-Enhanced MR Angiography in Acute Ischemic Stroke: A Pilot Study ADULT BRAIN
CONCLUSIONS: We demonstrated that the dynamic signals of dynamic contrast-enhanced MRA could be used to generate multiphase collateral images and showed the possibility of the multiphase MRA collateral map as a useful collateral imaging method in acute ischemic stroke.
Source: American Journal of Neuroradiology - June 11, 2019 Category: Radiology Authors: Roh, H. G., Kim, E. Y., Kim, I. S., Lee, H. J., Park, J. J., Lee, S. B., Choi, J. W., Jeon, Y. S., Park, M., Kim, S. U., Kim, H. J. Tags: ADULT BRAIN Source Type: research

Thrombectomy with Conscious Sedation Compared with General Anesthesia: A DEFUSE 3 Analysis INTERVENTIONAL
CONCLUSIONS: Patients who underwent thrombectomy with conscious sedation in the extended time window experienced a higher likelihood of functional independence at 90 days, a lower NIHSS score at 24 hours, and a shorter time from femoral puncture to reperfusion compared with those who had general anesthesia. This effect remained robust in institutions that only treated patients with a single anesthesia technique.
Source: American Journal of Neuroradiology - June 11, 2019 Category: Radiology Authors: Powers, C. J., Dornbos, D., Mlynash, M., Gulati, D., Torbey, M., Nimjee, S. M., Lansberg, M. G., Albers, G. W., Marks, M. P. Tags: INTERVENTIONAL Source Type: research

First-Line Sofia Aspiration Thrombectomy Approach within the Endovascular Treatment of Ischemic Stroke Multicentric Registry: Efficacy, Safety, and Predictive Factors of Success INTERVENTIONAL
CONCLUSIONS: The first-line contact aspiration approach appeared safe and efficient with Sofia catheters. These devices achieved very high reperfusion rates with a low requirement for stent retriever rescue therapy, especially for M1 occlusions.
Source: American Journal of Neuroradiology - June 11, 2019 Category: Radiology Authors: Marnat, G., Barreau, X., Detraz, L., Bourcier, R., Gory, B., Sgreccia, A., Gariel, F., Berge, J., Menegon, P., Kyheng, M., Labreuche, J., Consoli, A., Blanc, R., Lapergue, B., on behalf of the ETIS Investigators Tags: INTERVENTIONAL Source Type: research

An Ultrasonographic Multiparametric Carotid Plaque Risk Index Associated with Cerebrovascular Symptomatology: A Study Comparing Color Doppler Imaging and Contrast-Enhanced Ultrasonography EXTRACRANIAL VASCULAR
CONCLUSIONS: Symptomatic plaques had a higher degree of stenosis, lower gray-scale median values, and higher values of the Kanber vulnerability index using both color Doppler imaging and contrast-enhanced ultrasonography for plaque surface delineation.
Source: American Journal of Neuroradiology - June 11, 2019 Category: Radiology Authors: Rafailidis, V., Chryssogonidis, I., Xerras, C., Grisan, E., Cheimariotis, G.- A., Tegos, T., Rafailidis, D., Sidhu, P. S., Charitanti-Kouridou, A. Tags: EXTRACRANIAL VASCULAR Source Type: research

Impact of Balloon-Guiding Catheter Location on Recanalization in Patients with Acute Stroke Treated by Mechanical Thrombectomy INTERVENTIONAL
CONCLUSIONS: Location of the balloon-guiding catheter has a significant impact on recanalization in patients with acute stroke. The balloon-guiding catheter should be positioned as distally as safely possible in the cervical ICA for maximally effective thrombectomy.
Source: American Journal of Neuroradiology - May 14, 2019 Category: Radiology Authors: Jeong, D. E., Kim, J. W., Kim, B. M., Hwang, W., Kim, D. J. Tags: INTERVENTIONAL Source Type: research

Comparison of Iterative Model Reconstruction versus Filtered Back-Projection in Pediatric Emergency Head CT: Dose, Image Quality, and Image-Reconstruction Times PEDIATRICS
CONCLUSIONS: In children referred for emergency noncontrast head CT, optimized low-dose protocols with iterative model reconstruction allowed us to significantly reduce the relative dose, on average, 22% compared with filtered back-projection, with significantly improved objective and subjective image quality.
Source: American Journal of Neuroradiology - May 14, 2019 Category: Radiology Authors: Southard, R. N., Bardo, D. M. E., Temkit, M. H., Thorkelson, M. A., Augustyn, R. A., Martinot, C. A. Tags: PEDIATRICS Source Type: research

Risk of Acute Kidney Injury with Consecutive, Multidose Use of Iodinated Contrast in Patients with Acute Ischemic Stroke PATIENT SAFETY
SUMMARY: Currently, CTA is the imaging technique most frequently used to evaluate acute ischemic stroke, and patients with intracranial large-vessel occlusion usually undergo endovascular treatment. This single-center, prospective, cohort study showed that consecutive, multidose use of contrast during CTA and DSA does not increase the incidence of acute kidney injury in patients with acute ischemic stroke, though acute kidney injury tended to have a higher incidence in the contrast multiexposure group (P = .172).
Source: American Journal of Neuroradiology - April 10, 2019 Category: Radiology Authors: Jia, Z. Y., Wang, S. X., Zhao, L. B., Cao, Y. Z., Shi, H. B., Liu, S. Tags: PATIENT SAFETY Source Type: research