Optimal MRI sequence for identifying occlusion location in acute stroke: which value of time-resolved contrast-enhanced MRA?

AJNR. American Journal of Neuroradiology
A Le BrasJ-Y Gauvrit

Abstract

Identifying occlusion location is crucial for determining the optimal therapeutic strategy during the acute phase of ischemic stroke. The purpose of this study was to assess the diagnostic efficacy of MR imaging, including conventional sequences plus time-resolved contrast-enhanced MRA in comparison with DSA for identifying arterial occlusion location. Thirty-two patients with 34 occlusion levels referred for thrombectomy during acute cerebral stroke events were consecutively included from August 2010 to December 2012. Before thrombectomy, we performed 3T MR imaging, including conventional 3D-TOF and gradient-echo T2 sequences, along with time-resolved contrast-enhanced MRA of the extra- and intracranial arteries. The 3D-TOF, gradient-echo T2, and time-resolved contrast-enhanced MRA results were consensually assessed by 2 neuroradiologists and compared with prethrombectomy DSA results in terms of occlusion location. The Wilcoxon test was used for statistical analysis to compare MR imaging sequences with DSA, and the κ coefficient was used to determine intermodality agreement. The occlusion level on the 3D-TOF and gradient-echo T2 images differed significantly from that of DSA (P < .001 and P = .002, respectively), while no sign...Continue Reading

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Citations

Dec 21, 2013·The Journal of Venomous Animals and Toxins Including Tropical Diseases·Paulo Câmara Marques Pereira, Elaine Cristina Navarro
Aug 18, 2018·AJNR. American Journal of Neuroradiology·T BoujanM A Möhlenbruch
Mar 12, 2019·Journal of Neuroradiology. Journal De Neuroradiologie·Sarah DhundassAugustin Lecler

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