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Source: American Journal of Neuroradiology

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Total 580 results found since Jan 2013.

SWI Susceptibility Vessel Sign in Patients Undergoing Mechanical Thrombectomy for Acute Ischemic Stroke INTERVENTIONAL
CONCLUSIONS: The susceptibility vessel sign is an MR imaging phenomenon frequently observed in patients with acute ischemic stroke and is associated with successful reperfusion after mechanical thrombectomy. However, superior clinical functional outcome and lower mortality noted in patients showing the susceptibility vessel sign could not be entirely attributed to higher reperfusion rates.
Source: American Journal of Neuroradiology - November 11, 2021 Category: Radiology Authors: Belachew, N. F., Dobrocky, T., Aleman, E. B., Meinel, T. R., Hakim, A., Vynckier, J., Arnold, M., Seiffge, D. J., Wiest, R., Mordasini, P., Gralla, J., Fischer, U., Piechowiak, E. I., Kaesmacher, J. Tags: INTERVENTIONAL Source Type: research

Outcomes of Mechanical Thrombectomy in the Early * (=6-hour) Time Window Based Solely on Noncontrast CT and CT Angiography: A Propensity Score-Matched Cohort Study INTERVENTIONAL
CONCLUSIONS: Patients selected for mechanical thrombectomy in the extended time window solely on the basis of noncontrast CT and CTA still achieved decent rates of favorable 90-day functional outcomes, not statistically different from patients in the early time window.
Source: American Journal of Neuroradiology - November 11, 2021 Category: Radiology Authors: Hendrix, P., Chaudhary, D., Avula, V., Abedi, V., Zand, R., Noto, A., Melamed, I., Goren, O., Schirmer, C. M., Griessenauer, C. J. Tags: INTERVENTIONAL Source Type: research

Local Intra-arterial Thrombolysis during Mechanical Thrombectomy for Refractory Large-Vessel Occlusion: Adjunctive Chemical Enhancer of Thrombectomy INTERVENTIONAL
CONCLUSIONS: The use of local intra-arterial urokinase as an adjunct to mechanical thrombectomy may be an effective and safe method that provides better recanalization than the conventional mechanical thrombectomy for refractory thrombus in patients with embolic large-vessel occlusion.
Source: American Journal of Neuroradiology - November 11, 2021 Category: Radiology Authors: Baik, S. H., Jung, C., Kim, J. Y., Shin, D.- W., Kim, B. J., Kang, J., Bae, H.- J., Kim, J. H. Tags: INTERVENTIONAL Source Type: research

A Uniform Description of Perioperative Brain MRI Findings in Infants with Severe Congenital Heart Disease: Results of a European Collaboration PEDIATRICS
CONCLUSIONS: A broad spectrum of perioperative brain MR imaging findings was found in infants with severe congenital heart disease. We propose an MR imaging protocol including T1-, T2-, diffusion-, and susceptibility-weighted imaging, and MRV to identify ischemic, hemorrhagic, and thrombotic lesions observed in this patient group.
Source: American Journal of Neuroradiology - November 11, 2021 Category: Radiology Authors: Stegeman, R., Feldmann, M., Claessens, N. H. P., Jansen, N. J. G., Breur, J. M. P. J., de Vries, L. S., Logeswaran, T., Reich, B., Knirsch, W., Kottke, R., Hagmann, C., Latal, B., Simpson, J., Pushparajah, K., Bonthrone, A. F., Kelly, C. J., Arulkumaran, Tags: PEDIATRICS Source Type: research

MR Imaging Differences in the Circle of Willis between Healthy Children and Adults PEDIATRICS
CONCLUSIONS: Our results demonstrate that the circle of Willis is different in size and symmetry in healthy children compared with adults, likely associated with developmental changes in cerebral perfusion. Further work is needed to understand why asymmetric vasculature develops in some but not all adults.
Source: American Journal of Neuroradiology - November 11, 2021 Category: Radiology Authors: Guilliams, K. P., Gupta, N., Srinivasan, S., Binkley, M. M., Ying, C., Couture, L., Gross, J., Wallace, A., McKinstry, R. C., Vo, K., Lee, J.- M., An, H., Goyal, M. S. Tags: PEDIATRICS Source Type: research

Sodium MR Neuroimaging ADULT BRAIN
SUMMARY: Sodium MR imaging has the potential to complement routine proton MR imaging examinations with the goal of improving diagnosis, disease characterization, and clinical monitoring in neurologic diseases. In the past, the utility and exploration of sodium MR imaging as a valuable clinical tool have been limited due to the extremely low MR signal, but with recent improvements in imaging techniques and hardware, sodium MR imaging is on the verge of becoming clinically realistic for conditions that include brain tumors, ischemic stroke, and epilepsy. In this review, we briefly describe the fundamental physics of sodium M...
Source: American Journal of Neuroradiology - November 11, 2021 Category: Radiology Authors: Hagiwara, A., Bydder, M., Oughourlian, T. C., Yao, J., Salamon, N., Jahan, R., Villablanca, J. P., Enzmann, D. R., Ellingson, B. M. Tags: ADULT BRAIN Source Type: research

Rescan Time Delays in Ischemic Stroke Imaging: A Retrospective Observation and Analysis of Causes and Clinical Impact ADULT BRAIN
CONCLUSIONS: A sequential approach to CT-based imaging may be significantly associated with prolonged acute stroke evaluations. Adoption of early simultaneous comprehensive CT could minimize treatment delays and improve outcomes.
Source: American Journal of Neuroradiology - October 6, 2021 Category: Radiology Authors: Katz, J. M., Wang, J. J., Boltyenkov, A. T., Martinez, G., O'Hara, J., Feizullayeva, C., Gribko, M., Pandya, A., Sanelli, P. C. Tags: ADULT BRAIN Source Type: research

Contrast Bolus Interference in a Multimodal CT Stroke Protocol ADULT BRAIN
CONCLUSIONS: CTP can be reliably performed after CTA without a relevant net effect on perfusion metrics. However, when measuring CTP after CTA, either a short pause on the order of 30 seconds should be observed or an appropriate correction method should be applied. It may help to avoid excluding patients from mechanical thrombectomy by overestimating infarct cores.
Source: American Journal of Neuroradiology - October 6, 2021 Category: Radiology Authors: Kellner, E., Rau, A., Demerath, T., Reisert, M., Urbach, H. Tags: ADULT BRAIN Source Type: research

Transmantle Pressure Computed from MR Imaging Measurements of Aqueduct Flow and Dimensions ADULT BRAIN
CONCLUSIONS: The nondimensional fluid mechanics model for computing transmantle pressure detected changes in pressure related to age and aqueductal dimensions. This novel methodology can be easily used to investigate the clinical relevance of the transmantle pressure in normal pressure hydrocephalus, pediatric communicating hydrocephalus, and other CSF disorders.
Source: American Journal of Neuroradiology - October 6, 2021 Category: Radiology Authors: Sincomb, S. J., Coenen, W., Criado-Hidalgo, E., Wei, K., King, K., Borzage, M., Haughton, V., Sanchez, A. L., Lasheras, J. C. Tags: ADULT BRAIN Source Type: research

Brazilian FRED Registry: A Prospective Multicenter Study for Brain Aneurysm Treatment--The BRED Study INTERVENTIONAL
CONCLUSIONS: As reported previously, the FRED has proved to be a safe and effective tool, with high occlusion rates. The design of the stent makes it more difficult to perform balloon angioplasty compared with similar devices. A branch arising from the aneurysm sac was found to be a predictor of nonocclusion at 12 months, though larger series are needed to estimate the magnitude of the association.
Source: American Journal of Neuroradiology - October 6, 2021 Category: Radiology Authors: Manzato, L. B., Santos, R. B., Filho, P. M. M., Miotto, G., Bastos, A. M., Vanzin, J. R. Tags: INTERVENTIONAL Source Type: research

Patient-Relevant Deficits Dictate Endovascular Thrombectomy Decision-Making in Patients with Low NIHSS Scores with Medium-Vessel Occlusion Stroke INTERVENTIONAL
CONCLUSIONS: The presence of a patient-relevant deficit in low-NIHSS acute ischemic stroke due to medium-vessel occlusion is an important factor for endovascular treatment decision-making. This may have relevance for the conduct and interpretation of low-NIHSS endovascular treatment in randomized trials.
Source: American Journal of Neuroradiology - October 6, 2021 Category: Radiology Authors: McDonough, R., Cimflova, P., Kashani, N., Ospel, J. M., Kappelhof, M., Singh, N., Sehgal, A., Sakai, N., Fiehler, J., Chen, M., Goyal, M. Tags: INTERVENTIONAL Source Type: research

Radiology-Pathology Correlations of Intracranial Clots: Current Theories, Clinical Applications, and Future Directions ADULT BRAIN
This article will review the current literature regarding clot imaging, including its histologic backdrop, the correlation of images with cellular components and treatment responsiveness, and future expectations.
Source: American Journal of Neuroradiology - September 7, 2021 Category: Radiology Authors: Benson, J. C., Kallmes, D. F., Larson, A. S., Brinjikji, W. Tags: ADULT BRAIN Source Type: research

Roadmap Consensus on Carotid Artery Plaque Imaging and Impact on Therapy Strategies and Guidelines: An International, Multispecialty, Expert Review and Position Statement EXTRACRANIAL VASCULAR
SUMMARY: Current guidelines for primary and secondary prevention of stroke in patients with carotid atherosclerosis are based on the quantification of the degree of stenosis and symptom status. Recent publications have demonstrated that plaque morphology and composition, independent of the degree of stenosis, are important in the risk stratification of carotid atherosclerotic disease. This finding raises the question as to whether current guidelines are adequate or if they should be updated with new evidence, including imaging for plaque phenotyping, risk stratification, and clinical decision-making in addition to the degr...
Source: American Journal of Neuroradiology - September 7, 2021 Category: Radiology Authors: Saba, L., Brinjikji, W., Spence, J. D., Wintermark, M., Castillo, M., Borst, G. J. D., Yang, Q., Yuan, C., Buckler, A., Edjlali, M., Saam, T., Saloner, D., Lal, B. K., Capodanno, D., Sun, J., Balu, N., Naylor, R., Lugt, A. v. d., Wasserman, B. A., Kooi, M Tags: EXTRACRANIAL VASCULAR Source Type: research

Racial and Socioeconomic Disparities in the Use and Outcomes of Endovascular Thrombectomy for Acute Ischemic Stroke INTERVENTIONAL
CONCLUSIONS: Despite a widespread increase in endovascular thrombectomy use, black and low-income patients may be less likely to receive endovascular thrombectomy. Future effort should attempt to better understand the causes of these disparities and develop strategies to ensure equitable access to potentially life-saving treatment.
Source: American Journal of Neuroradiology - September 7, 2021 Category: Radiology Authors: Mehta, A. M., Fifi, J. T., Shoirah, H., Shigematsu, T., Oxley, T. J., Kellner, C. P., Leacy, R. D., Mocco, J., Majidi, S. Tags: INTERVENTIONAL Source Type: research

The Safety of Intra-arterial Tirofiban during Endovascular Therapy after Intravenous Thrombolysis INTERVENTIONAL
CONCLUSIONS: Using intra-arterial tirofiban during endovascular therapy after IV tPA could be safe.
Source: American Journal of Neuroradiology - September 7, 2021 Category: Radiology Authors: Jang, S. H., Sohn, S.- I., Park, H., Lee, S.- J., Kim, Y.- W., Hong, J. M., Kim, C.-H., Choi, J. W., Kang, D.- H., Kim, Y.- S., Hwang, Y.- H., Lee, J. S., Hong, J.- H. Tags: INTERVENTIONAL Source Type: research