Prospective Observation for Serial Changes in Acute Intracranial Artery Dissection Using HR-MRI

Study Overview
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Brief Summary
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Intracranial artery disease has been more detected with development of HR-MR. HR-MR can depict vascular wall directly and give us more information beyond the pre-existing imaging modalities such as digital subtraction angiography, magnetic resonance angiography, computed tomography angiography. Hence, HR-MR is considered to become promising imaging modality for intracranial artery disease and many studies have been published recently. However, there was not enough to differentiate various intracranial artery disease such as atherosclerosis, dissection, moyamoya disease, vasculitis, reversible vasoconstriction syndrome. In real clinical arena, intracranial artery disease is too difficult to diagnose and distinguish among the disease. Of the disease, usefulness of HR-MR has been consistently published in the detection and diagnosis of intracranial artery dissection recently. HR-MR seems to be the most important and reliable imaging method in intracranial artery dissection as of now. Therefore, intracranial artery dissection is necessary to study using HR-MR. Intracranial artery dissection is dynamic vascular pathology. The geometric change is the most common among intracranial artery disease. However, there was no report about the geometric change in HR-MR. The investigators acquired retrospective data about the natural course of intracranial artery dissection in HR-MR and are preparing for publishing an article. However, the data is not prospective and not intraindividual comparison. Therefore, reliability is not enough to convince the natural course. If the investigators got prospective and intraindividual data, definite natural course of intracranial artery dissection could be acquired and would be helpful to diagnose the dissection and differentiate from other vascular pathologies. The longitudinal information from this study could guide us as the important map on the confusing HR-MR findings. In addition, the previous retrospective study can be a stepping-stone to perform a prospective study, which can increase the success rate of the prospective study. The protocols for imaging follow-up are as followed: initial (optional), 1 month, 3 month, 6 month (optional), 12 month

Detailed Description
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Inclusion criteria: adults with equal to or greater than 18 year-old confirmed as acute intracranial artery dissection based on the clinical and radiological diagnoses informed consent Exclusion criteria: contraindicated for MRI scanning and contrast media usage refuse the enrollment Outcome measures Serial follow-up with intraindividual comparisons and interstage comparisons Radiological features: intimal flap, double lumen, aneurysmal dilatation, intramural hematoma, luminal stenosis, contrast enhancement degree, diameters, length, wall thickness, eccentricity index Clinical features: mRS, NIHSS, drug Demographics

Official Title
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Prospective Observation for Serial Changes in Acute Intracranial Artery Dissection Using High Resolution Vessel Wall Magnetic Resonance Imaging

Conditions
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Cerebral Arteries, Dissection

Intervention / Treatment
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* Other: magnetic resonance imaging


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Informed consent Acute intracranial artery dissection Exclusion Criteria: angioplasty, or stenting, contraindication for MR imaging, Hypersensitivity to gadolinium based contrast media, Pregnant or lactating women, Renal condition : eGFR < 60, 6) Patients unable and/or unwilling to comply with treatment or study instructions
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: Intracranial artery dissection<br>Patients with intracranial artery dissection who were diagnosed based on the clinical and radiological (including MRI) diagnoses at the symptom onset after Jan-01-2016 | Other: magnetic resonance imaging<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Prospective observation for serial changes in acute intracranial artery dissection using HR-MRI | Radiological findings of HR-MRI during the study period | The time interval from initial event to outcome measurement is 1 year. |