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Dual-Layer Detector Cone-Beam CT Angiography for Stroke Assessment: First-in-Human Results (the Next Generation X-ray Imaging System Trial) INTERVENTIONAL
CONCLUSIONS: In a single-center stroke setting, dual-layer detector cone-beam CTA virtual monoenergetic images are noninferior to CTA under certain conditions. Notably, the prototype is hampered by a long scan time and is not capable of contrast media bolus tracking. After excluding examinations with such scan issues, readers considered dual-layer detector cone-beam CTA noninferior to CTA, despite more artifacts.
Source: American Journal of Neuroradiology - May 10, 2023 Category: Radiology Authors: Stahl, F., Almqvist, H., Kolloch, J., Aspelin, A., Gontu, V., Hummel, E., van Vlimmeren, M., Simon, M., Thran, A., Holmberg, A., Mazya, M. V., Söderman, M., Delgado, A. F. Tags: INTERVENTIONAL Source Type: research

Effective Dose Measurements of the Latest-Generation Angiographic System in Patients with Acute Stroke: A Comparison with the Newest Multidetector CT Generation INTERVENTIONAL
CONCLUSIONS: The estimated effective dose to the patient for flat detector CT perfusion and angiography on a modern biplane angiography system does not deviate substantially from that of analogous multidetector row CT protocols.
Source: American Journal of Neuroradiology - November 7, 2022 Category: Radiology Authors: Brehm, A., Nguyen, K. A. T., Blackham, K. A., Psychogios, M.- N. 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

Interobserver Reliability on Intravoxel Incoherent Motion Imaging in Patients with Acute Ischemic Stroke FUNCTIONAL
CONCLUSIONS: Intravoxel incoherent motion MR imaging could be performed in < 1 minute in addition to routine DWI. Intravoxel incoherent motion parameters noninvasively provide feasible, qualitative perfusion-related information for assessing patients with acute ischemic stroke.
Source: American Journal of Neuroradiology - May 10, 2022 Category: Radiology Authors: Yamashita, K., Kamei, R., Sugimori, H., Kuwashiro, T., Tokunaga, S., Kawamata, K., Furuya, K., Harada, S., Maehara, J., Okada, Y., Noguchi, T. Tags: FUNCTIONAL Source Type: research

Use of CTA Test Dose to Trigger a Low Cardiac Output Protocol Improves Acute Stroke CTP Data Analyzed with RAPID Software ADULT BRAIN
CONCLUSIONS: Older age, left ventricle ejection fraction, and the absence of hypertension increase the risk of time-density curve truncation. However, a CTA test-dose-directed case-specific protocol can reduce truncation to ensure accurate data while mitigating radiation dose increases.
Source: American Journal of Neuroradiology - March 10, 2022 Category: Radiology Authors: Hartman, J. B., Moran, S., Zhu, C., Sharp, J., Hippe, D. S., Zamora, D. A., Mossa-Basha, M. Tags: ADULT BRAIN Source Type: research

Risks of Undersizing Stent Retriever Length Relative to Thrombus Length in Patients with Acute Ischemic Stroke INTERVENTIONAL
CONCLUSIONS: Information about thrombus and stent length is more valuable when combined. High thrombus length/stent retriever length ratios, which may raise the risk of unsuccessful recanalization and embolization in new territories, should be avoided by adapting stent retriever selection to thrombus length whenever possible.
Source: American Journal of Neuroradiology - December 13, 2021 Category: Radiology Authors: Belachew, N. F., Dobrocky, T., Meinel, T. R., Hakim, A., Vynckier, J., Arnold, M., Seiffge, D. J., Wiest, R., Piechowiak, E. I., Fischer, U., Gralla, J., Mordasini, P., Kaesmacher, J. Tags: INTERVENTIONAL Source Type: research

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

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

Evaluation of Artificial Intelligence-Powered Identification of Large-Vessel Occlusions in a Comprehensive Stroke Center FUNCTIONAL
CONCLUSIONS: Our experience evaluating Viz LVO shows that the system has the potential for early identification of patients with stroke with large-vessel occlusions, hopefully improving future management and stroke care.
Source: American Journal of Neuroradiology - February 9, 2021 Category: Radiology Authors: Yahav-Dovrat, A., Saban, M., Merhav, G., Lankri, I., Abergel, E., Eran, A., Tanne, D., Nogueira, R. G., Sivan-Hoffmann, R. Tags: FUNCTIONAL Source Type: research

Chest CT Scanning in Suspected Stroke: Not Always Worth the Extra Mile letter
Source: American Journal of Neuroradiology - November 11, 2020 Category: Radiology Authors: Li, M. D., Lang, M., Yoon, B. C., Applewhite, B. P., Buch, K., Rincon, S. P., Leslie-Mazwi, T. M., Mehan, W. A. Tags: letter 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

High Spatiotemporal Resolution 4D Flow MRI of Intracranial Aneurysms at 7T in 10 Minutes ADULT BRAIN
CONCLUSIONS: Highly accelerated high spatiotemporal resolution 4D flow MR imaging at 7T in intracranial arteries and aneurysms provides repeatable and accurate quantitative flow values. Flow rate accuracy is significantly increased compared with conventional 4D flow scans.
Source: American Journal of Neuroradiology - July 12, 2020 Category: Radiology Authors: Gottwald, L. M., Töger, J., Markenroth Bloch, K., Peper, E. S., Coolen, B. F., Strijkers, G. J., van Ooij, P., Nederveen, A. J. Tags: ADULT BRAIN Source Type: research

CT Angiography in Evaluating Large-Vessel Occlusion in Acute Anterior Circulation Ischemic Stroke: Factors Associated with Diagnostic Error in Clinical Practice INTERVENTIONAL
CONCLUSIONS: Several factors may have an association with missing a large-vessel occlusion on CTA, including the CTA interpreter (non-neuroradiologists versus neuroradiologists), large-vessel occlusion location (M2 segment versus the distal internal carotid artery and/or M1 segment), and large-vessel occlusion caused by calcified emboli. Awareness of these factors may improve the accuracy in interpreting CTA and eventually improve stroke outcome.
Source: American Journal of Neuroradiology - April 8, 2020 Category: Radiology Authors: Fasen, B. A. C. M., Heijboer, R. J. J., Hulsmans, F.- J. H., Kwee, R. M. 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

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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