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Source: American Journal of Neuroradiology

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Total 580 results found since Jan 2013.

Differentiation of Hemorrhage from Iodine Using Spectral Detector CT: A Phantom Study ADULT BRAIN
CONCLUSIONS: Spectral detector CT can accurately differentiate blood from iodinated contrast in a phantom setting.
Source: American Journal of Neuroradiology - December 14, 2018 Category: Radiology Authors: Van Hedent, S., Hokamp, N. G., Laukamp, K. R., Buls, N., Kessner, R., Rose, B., Ros, P., Jordan, D. Tags: ADULT BRAIN Source Type: research

Abnormal Cerebral Perfusion Profile in Older Adults with HIV-Associated Neurocognitive Disorder: Discriminative Power of Arterial Spin-Labeling FUNCTIONAL
CONCLUSIONS: This study found specific CBF patterns associated with HIV status despite viral suppression—data that should animate further investigations into the pathobiologic basis of vascular and cognitive abnormalities in HIV-associated neurocognitive disorders.
Source: American Journal of Neuroradiology - December 14, 2018 Category: Radiology Authors: Narvid, J., McCoy, D., Dupont, S. M., Callen, A., Tosun, D., Hellmuth, J., Valcour, V. Tags: FUNCTIONAL Source Type: research

Does Phase-Contrast Imaging through the Cerebral Aqueduct Predict the Outcome of Lumbar CSF Drainage or Shunt Surgery in Patients with Suspected Adult Hydrocephalus? ADULT BRAIN
CONCLUSIONS: This study suggests that the results of phase-contrast MR imaging through the cerebral aqueduct alone should not be used to select patients for diagnostic or therapeutic CSF diversion.
Source: American Journal of Neuroradiology - December 14, 2018 Category: Radiology Authors: Blitz, A. M., Shin, J., Baledent, O., Page, G., Bonham, L. W., Herzka, D. A., Moghekar, A. R., Rigamonti, D. Tags: ADULT BRAIN Source Type: research

MR Imaging for Differentiating Contrast Staining from Hemorrhagic Transformation after Endovascular Thrombectomy in Acute Ischemic Stroke: Phantom and Patient Study ADULT BRAIN
CONCLUSIONS: According to our preliminary results, contrast staining might be differentiated from hemorrhagic transformation using an immediate postinterventional DWI protocol including gradient recalled-echo sequences. It might be possible to expedite establishment of postinterventional medical treatment strategy.
Source: American Journal of Neuroradiology - December 14, 2018 Category: Radiology Authors: You, S.- H., Kim, B., Kim, B. K., Suh, S.- i. Tags: ADULT BRAIN Source Type: research

Standards of Practice in Acute Ischemic Stroke Intervention: International Recommendations research-article
Source: American Journal of Neuroradiology - November 15, 2018 Category: Radiology Authors: Pierot, L., Jayaraman, M. V., Szikora, I., Hirsch, J. A., Baxter, B., Miyachi, S., Mahadevan, J., Chong, W., Mitchell, P. J., Coulthard, A., Rowley, H. A., Sanelli, P. C., Tampieri, D., Brouwer, P. A., Fiehler, J., Kocer, N., Vilela, P., Rovira, A., Fisch Tags: research-article Source Type: research

Impact of Ischemic Lesion Location on the mRS Score in Patients with Ischemic Stroke: A Voxel-Based Approach ADULT BRAIN
CONCLUSIONS: Our study confirms that infarct location has an important impact on functional outcome of patients with stroke and should be considered in prediction models. After we adjusted for covariates, the left-hemispheric corticosubcortical fiber tracts seemed to be of higher functional importance compared with cortical lesions.
Source: American Journal of Neuroradiology - November 15, 2018 Category: Radiology Authors: Ernst, M., Boers, A. M. M., Forkert, N. D., Berkhemer, O. A., Roos, Y. B., Dippel, D. W. J., van der Lugt, A., van Oostenbrugge, R. J., van Zwam, W. H., Vettorazzi, E., Fiehler, J., Marquering, H. A., Majoie, C. B. L. M., Gellissen, S., on behalf of the M Tags: ADULT BRAIN Source Type: research

Outcomes of Stent Retriever versus Aspiration-First Thrombectomy in Ischemic Stroke: A Systematic Review and Meta-Analysis INTERVENTIONAL
CONCLUSIONS: Stent-retriever thrombectomy–first and aspiration-first thrombectomy were associated with comparable final reperfusion rates and functional outcome. Stent-retriever thrombectomy was superior in achieving reperfusion as a stand-alone first-line technique, with lower use of rescue devices but a longer groin-to-reperfusion time.
Source: American Journal of Neuroradiology - November 15, 2018 Category: Radiology Authors: Tsang, C. O. A., Cheung, I. H. W., Lau, K. K., Brinjikji, W., Kallmes, D. F., Krings, T. Tags: INTERVENTIONAL Source Type: research

Reasons for Reperfusion Failures in Stent-Retriever-Based Thrombectomy: Registry Analysis and Proposal of a Classification System INTERVENTIONAL
CONCLUSIONS: Reasons for reperfusion failure in stent-retriever thrombectomy are heterogeneous. The failure to establish intracranial or cervical access is almost as common as stent-retriever failure after establishing intracranial access. Systematic reporting standards of reasons may help to further estimate relative frequencies and thereby guide priorities for technical development and scientific effort.
Source: American Journal of Neuroradiology - October 8, 2018 Category: Radiology Authors: Kaesmacher, J., Gralla, J., Mosimann, P. J., Zibold, F., Heldner, M. R., Piechowiak, E., Dobrocky, T., Arnold, M., Fischer, U., Mordasini, P. Tags: INTERVENTIONAL Source Type: research

Thrombus Permeability on Dynamic CTA Predicts Good Outcome after Reperfusion Therapy INTERVENTIONAL
CONCLUSIONS: Thrombus permeability assessed on dynamic CTA could be a better predictor of outcome after reperfusion therapy than that assessed on conventional single-phase CTA.
Source: American Journal of Neuroradiology - October 8, 2018 Category: Radiology Authors: Chen, Z., Shi, F., Gong, X., Zhang, R., Zhong, W., Zhang, R., Zhou, Y., Lou, M. Tags: INTERVENTIONAL Source Type: research

Value of Contrast-Enhanced MRA versus Time-of-Flight MRA in Acute Ischemic Stroke MRI ADULT BRAIN
CONCLUSIONS: Contrast-enhanced MRA offers better diagnostic accuracy than TOF-MRA in acute ischemic stroke. Contrast-enhanced MRA was superior in localizing vessel occlusion within a shorter acquisition time while providing a larger coverage, including extracranial vessels, and a more accurate assessment of collateral status. These results support inclusion of contrast-enhanced MRA in acute stroke MR imaging, perhaps making TOF-MRA superfluous.
Source: American Journal of Neuroradiology - September 6, 2018 Category: Radiology Authors: Boujan, T., Neuberger, U., Pfaff, J., Nagel, S., Herweh, C., Bendszus, M., Möhlenbruch, M. A. Tags: ADULT BRAIN Source Type: research

Time Course of Cerebral Perfusion Changes in Children with Migraine with Aura Mimicking Stroke PEDIATRICS
We present 12 pediatric patients with acute hemiplegic migraine or migraine with aura who underwent MR imaging within 12 hours of symptom onset. Quantitative and qualitative analyses were performed on arterial spin-labeling; and qualitative analysis, on SWI and MRA sequences. All 12 patients had normal DWI and abnormal arterial spin-labeling findings. Furthermore, we observed a more rapid transition from hypoperfusion to rebound hyperperfusion in 3 patients compared with prior reports. These findings support the use of multimodal MR imaging to distinguish migraine with aura from stroke and the simultaneous use of these MR ...
Source: American Journal of Neuroradiology - September 6, 2018 Category: Radiology Authors: Cobb-Pitstick, K. M., Munjal, N., Safier, R., Cummings, D. D., Zuccoli, G. Tags: PEDIATRICS Source Type: research

Primary Angioplasty without Stenting for Symptomatic, High-Grade Intracranial Stenosis with Poor Circulation INTERVENTIONAL
CONCLUSIONS: In this retrospective series, primary balloon angioplasty was an effective treatment option for symptomatic intracranial stenosis with a high risk of stroke.
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Wang, Y., Ma, Y., Gao, P., Chen, Y., Yang, B., Jiao, L. Tags: INTERVENTIONAL Source Type: research

Relationship between Cough-Associated Changes in CSF Flow and Disease Severity in Chiari I Malformation: An Exploratory Study Using Real-Time MRI ADULT BRAIN
CONCLUSIONS: Our exploratory study suggests that assessment of CSF flow response to a coughing challenge has the potential to become a valuable objective noninvasive test for clinical assessment of disease severity in patients with Chiari I malformation.
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Bezuidenhout, A. F., Khatami, D., Heilman, C. B., Kasper, E. M., Patz, S., Madan, N., Zhao, Y., Bhadelia, R. A. Tags: ADULT BRAIN Source Type: research

Clinical Significance of Intraplaque Hemorrhage in Low- and High-Grade Basilar Artery Stenosis on High-Resolution MRI INTERVENTIONAL
CONCLUSIONS: Intraplaque hemorrhage is present in both low- and high-grade stenotic basilar artery plaques and is independently associated with symptomatic stroke status. Intraplaque hemorrhage may identify high-risk plaque and provide new insight into the management of patient with stroke without significant stenosis.
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Zhu, C., Tian, X., Degnan, A. J., Shi, Z., Zhang, X., Chen, L., Teng, Z., Saloner, D., Lu, J., Liu, Q. Tags: INTERVENTIONAL Source Type: research

Mobile Stroke Unit Reduces Time to Image Acquisition and Reporting INTERVENTIONAL
SUMMARY: Timely administration of thrombolytic therapy is critical to maximizing the likelihood of favorable outcomes in patients with acute ischemic stroke. Although emergency medical service activation overall improves the timeliness of acute stroke treatment, the time from emergency medical service dispatch to hospital arrival unavoidably decreases the timeliness of thrombolytic administration. Our mobile stroke unit, a new-generation ambulance with on-board CT scanning capability, reduces key imaging time metrics and facilitates in-the-field delivery of IV thrombolytic therapy.
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Nyberg, E. M., Cox, J. R., Kowalski, R. G., Vela-Duarte, D., Schimpf, B., Jones, W. J. Tags: INTERVENTIONAL Source Type: research