Abstract
Purpose
The aim of this study is to demonstrate the diagnostic effect of VWI in differentiating PACNS from other vasculopathies and its role in post-treatment follow-up in PACNS patients in this study.
Methods
In this prospective study, we included patients with clinical suspicion of PACNS who presented with new-onset ischemic events and had significant intracranial large vessel stenosis on DSA or MRA. VWI was performed on all patients. The imaging findings and final diagnoses were recorded. Control VWI was performed on patients with PACNS diagnosis after at least 3 months of treatment, and the change in findings was also evaluated.
Results
Twenty-three patients were included in the study had a median age of 40 (range 12–58). The most common clinical manifestations were focal neurologic deficits. According to the initial clinical evaluation, 10 patients (43.5%) were classified as PACNS and 13 patients (56.5%) as indeterminate for PACNS. After incorporating the VWI findings, the diagnosis of PACNS was confirmed in all clinically diagnosed PACNS patients. Concentric wall thickening and contrast enhancement were statistically significant in the PACNS group (p <0.001). According to concentric thickening and VWE features, sensitivity and specificity in distinguishing PACNS and other vasculopathies were 95.2%, 75% and 95.2%, 68.8%, respectively. Vessel wall enhancement regressed in 7 of 9 patients during a median follow-up period of 8 months (range 5.5–11.5) in PACNS patients who followed up.
Conclusion
VWI seems a new and useful imaging method in the differential diagnosis of PACNS and might be a useful adjunct for post-treatment follow-up.
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Data availability
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Code availability
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Abbreviations
- VW-MRI:
-
Vessel wall magnetic resonance imaging
- PACNS:
-
Primary angiitis of the central nervous system
- RCVS:
-
Reversible cerebral vasoconstriction syndrome
- MMD:
-
Moya Moya disease
- VWE:
-
Vessel wall enhancement
- VWT:
-
Vessel wall thickening
- VWI:
-
Vessel wall imaging
- CNS:
-
Central nervous system
- CSF:
-
Cerebrospinal fluid
- TIA:
-
Transient ischemic attack
- DSA:
-
Digital subtraction angiography
- DWI:
-
Diffusion-weighted imaging
- SWI:
-
Susceptibility-weighted imaging
- TOF-MRA:
-
Time of flight MR angiography
- MIP:
-
Maximum intensity projection
- ACA:
-
Anterior cerebral artery
- MCA:
-
Middle cerebral artery
- PCA:
-
Posterior cerebral artery
- ICA:
-
Internal carotid artery
- CSF:
-
Cerebrospinal fluid
- F/U:
-
Follow-up
- S:
-
Steroid
- MTX:
-
Methotrexate
- Aza:
-
Azathioprine
- Cfc:
-
Cyclophosphamide
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Conception and design: Civan Islak, Naci Kocer, and Ahmet Kursat Karaman. Data collection, data analysis: Ahmet Kursat Karaman, Ugur Uygunoglu, Bora Korkmazer, and Ercan Karaarslan. Drafting the article: Ahmet Kursat Karaman, Bora Korkmazer, Serdar Arslan, Osman Kızılkılıc, and Ercan Karaarslan. Critical revision of the manuscript: Serdar Arslan, Ugur Uygunoglu, Osman Kızılkılıc, Naci Kocer, and Civan Islak. All listed authors have approved the manuscript before submission, including the names and order of authors; managing all communication between the Journal and all co-authors, before and after publication; * providing transparency on the re-use of material and mention any unpublished material included in the manuscript in a cover letter to the Editor; making sure disclosures, declarations, and transparency on data statements from all authors are included in the manuscript as appropriate.
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Karaman, A.K., Korkmazer, B., Arslan, S. et al. The diagnostic contribution of intracranial vessel wall imaging in the differentiation of primary angiitis of the central nervous system from other intracranial vasculopathies. Neuroradiology 63, 1635–1644 (2021). https://doi.org/10.1007/s00234-021-02686-y
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DOI: https://doi.org/10.1007/s00234-021-02686-y