NDLI: Vessel wall imaging features of Moyamoya disease in a North American population: patterns of negative remodelling, contrast enhancement, wall thickening, and stenosis

Content Provider	Springer Nature : BioMed Central
Author	Larson, Anthony S. Klaas, James P. Johnson, Matthew P. Benson, John C. Shlapak, Darya Lanzino, Giuseppe Savastano, Luis E. Lehman, Vance T.
Abstract	Background This study characterized vessel wall imaging (VWI) features of Moyamoya disease (MMD) in a predominantly adult population at a North American center. Methods Consecutive patients with VWI were included. Twelve arterial segments were analyzed for wall thickening, degree and pattern of contrast enhancement, and remodeling. Results Overall, 286 segments were evaluated in 24 patients (mean age = 36.0 years [range = 1–58]). Of 172 affected segments, 163 (95%) demonstrated negative remodeling. Complete vessel wall obliteration was most frequent in the proximal M1 (17/48, 35%). Affected segments enhanced in 72/172 (42%) (n = 15 for grade II; n = 54 for concentric and n = 18 for eccentric); 20 of 24 (83%) patients had at least one enhancing segment. Both enhancing and non-enhancing segments were present in 19/20 (95%) patients. Vessel wall enhancement was most common in the proximal segments and correlated to the degree of stenosis (p < 0.001), and outer wall diameter (p < 0.001), but not disease duration (p = 0.922) or Suzuki score (p = 0.477). Wall thickening was present in 82/172 (48%) affected segments and was associated with contrast enhancement (p < 0.001), degree of stenosis (p < 0.001), and smaller outer wall diameter (p = 0.004). Conclusion This study presents VWI findings in North American patients with MMD. Negative remodeling was the most common finding. Most patients had both enhancing and non-enhancing abnormal segments. Vessel wall enhancement was most common in proximal segments, variable in pattern or degree and was correlated to the degree of stenosis and smaller outer wall diameter.
Related Links	https://bmcmedimaging.biomedcentral.com/counter/pdf/10.1186/s12880-022-00930-2.pdf
Ending Page	10
Page Count	10
Starting Page	1
File Format	HTM / HTML
ISSN	14712342
DOI	10.1186/s12880-022-00930-2
Journal	BMC Medical Imaging
Issue Number	1
Volume Number	22
Language	English
Publisher	BioMed Central
Publisher Date	2022-11-17
Access Restriction	Open
Subject Keyword	Imaging Radiology Moyamoya disease Vessel wall imaging Negative remodeling Vessel wall enhancement Moyamoya Moyamoya syndrome
Content Type	Text
Resource Type	Article
Subject	Radiology, Nuclear Medicine and Imaging
Journal Impact Factor	2.9/2023
5-Year Journal Impact Factor	2.8/2023

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