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European Radiology

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07.08.2018 | Neuro

Significance of hyperintense arteries on Gd-enhanced 3D T1W black-blood imaging in acute stroke

verfasst von: Kyung-Yul Lee, Sang Hyun Suh, Sung Jun Ahn

Erschienen in: European Radiology | Ausgabe 3/2019

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Abstract

Objectives

To elucidate the pathogenesis of hyperintense arteries on Gd-enhanced 3D T1W BB FSE and their clinical significance in acute middle cerebral artery (MCA) stroke.

Methods

We retrospectively reviewed 20 patients with MCA infarction. We measured the contrast-to-noise ratio between hyperintense artery and adjacent grey matter on T2-FLAIR and Gd-enhanced 3D T1W BB FSE and compared them by using Student’s t test. The agreement of positive hyperintense artery between T2 FLAIR and Gd-enhanced 3D T1WI BB FSE was estimated with intraclass correlation coefficient. Our cohort was dichotomised into two groups depending on hyperintense artery scores, and clinical data were compared between two groups by using Student’s t test and chi-square test.

Results

The contrast between hyperintense artery and grey matter on Gd-enhanced 3D T1W BB FSE was significantly higher than that on T2-FLAIR (2.27 ± 1.65 versus 0.94 ± 0.86, p = 0.01). Overall, agreement of hyperintense arteries on T2-FLAIR and Gd-enhanced 3D T1W BB FSE was excellent (ρ = 0.76, p < 0.01). Patients with higher hyperintense artery scores had higher perfusion deficits that those with lower hyperintense artery scores (196.7 ± 41.4 vs 100.1 ± 130.1, p = 0.03).

Conclusion

Hyperintense arteries on Gd-enhanced 3D T1W BB FSE in acute MCA stroke may be associated with slow collateral flows. Their territories corresponded to those of FLAIR, but had a better contrast. The patients with hyperintense arteries in a wider territory showed larger perfusion deficit than those with hyperintense arteries in a narrower territory.

Key Points

• Hyperintense arteries on Gd-enhanced 3D T1W BB FSE are slow collateral flows.

• Hyperintense arteries on Gd-enhanced 3D T1W BB FSE are well matched with FLAIR hyperintense vessels.

• Hyperintense arteries are associated with perfusion deficit in stroke patients.

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Titel: Significance of hyperintense arteries on Gd-enhanced 3D T1W black-blood imaging in acute stroke
verfasst von: Kyung-Yul Lee
Sang Hyun Suh
Sung Jun Ahn
Publikationsdatum: 07.08.2018
Verlag: Springer Berlin Heidelberg
Erschienen in: European Radiology / Ausgabe 3/2019
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-018-5669-7

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Significance of hyperintense arteries on Gd-enhanced 3D T1W black-blood imaging in acute stroke

Abstract

Objectives

Methods

Results

Conclusion

Key Points

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Abstract

Objectives

Methods

Results

Conclusion

Key Points

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