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Published in: European Radiology 3/2019

01-03-2019 | Magnetic Resonance

Visualization of the lenticulostriate arteries at 3T using black-blood T1-weighted intracranial vessel wall imaging: comparison with 7T TOF-MRA

Authors: Zihao Zhang, Zhaoyang Fan, Qingle Kong, Jiayu Xiao, Fang Wu, Jing An, Qi Yang, Debiao Li, Yan Zhuo

Published in: European Radiology | Issue 3/2019

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Abstract

Objectives

The objective of this study was to explore the feasibility of using intracranial T1-weighted vessel wall imaging (VWI) to visualize the lenticulostriate arteries (LSAs) at 3T.

Material and methods

Thirteen healthy volunteers were examined with VWI at 3T and TOF-MRA at 7T during the same day. On the vascular skeletons obtained by manual tracing, the number of stems and branches of LSAs were counted. On the most prominent branch in every hemisphere, the contrast-to-noise ratio (CNR), the full length and the local length (5-15 mm above MCAs) were measured and compared between the two methods. Nine stroke patients with intracranial artery stenosis were also recruited into the study. The branches of LSAs were compared between the symptomatic and asymptomatic side.

Results

The extracted vascular trees were in good agreement between 7T TOF-MRA and 3T VWI. The two acquisitions showed similar numbers of the LSA stems. The number of branches revealed by 3T VWI was slightly lower than 7T TOF. The full lengths were slightly lower by VWI at 3T (p = 0.011, ICC = 0.917). The measured local lengths (5-15 mm from MCAs) showed high coherence between VWI and TOF-MRA (p = 0.098, ICC = 0.970). In stroke patients, 12 plaques were identified on MCA segments, and nine plaques were located on the symptomatic side. The average numbers of LSA visualized by 3T VWI were 4.3±1.3 on the symptomatic side and 5.0±1.1 on the asymptomatic side.

Conclusion

3T VWI is capable of depicting LSAs, particularly the stems and the proximal segments, with comparable image quality to that of 7T TOF-MRA.

Key Points

• T1-weighted intracranial VWI at 3T allows for black-blood MR angiography of lenticulostriate artery.
• 3T intracranial VWI depicts the stems and proximal segments of the lenticulostriate arteries comparable to 7T TOF-MRA.
• It is feasible to assess both large vessel wall lesions and lenticulostriate vasculopathy in one scan.
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Literature
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go back to reference Mukherjee D, Jani ND, Selvaganesan K, Weng CL, Shadden SC (2016) Computational assessment of the relation between embolism source and embolus distribution to the circle of Willis for improved understanding of stroke etiology. J Biomech Eng 138:081008. https://doi.org/10.1115/1.4033986 Mukherjee D, Jani ND, Selvaganesan K, Weng CL, Shadden SC (2016) Computational assessment of the relation between embolism source and embolus distribution to the circle of Willis for improved understanding of stroke etiology. J Biomech Eng 138:081008. https://​doi.​org/​10.​1115/​1.​4033986
Metadata
Title
Visualization of the lenticulostriate arteries at 3T using black-blood T1-weighted intracranial vessel wall imaging: comparison with 7T TOF-MRA
Authors
Zihao Zhang
Zhaoyang Fan
Qingle Kong
Jiayu Xiao
Fang Wu
Jing An
Qi Yang
Debiao Li
Yan Zhuo
Publication date
01-03-2019
Publisher
Springer Berlin Heidelberg
Published in
European Radiology / Issue 3/2019
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-018-5701-y

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