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Updated: Feb 3, 2026

Reliable Acquisition of Electroencephalography Data during Simultaneous Electroencephalography and Functional MRI
Published on: March 19, 2021
[Simultaneous Acquisition of Vessel Wall Imaging and MR Angiography in Brain MRI]
Hiroki Okada1, Yuichi Uchiumi2, Masayuki Sato2
1Department of Radiology, Chiba University Hospital.
Purpose:
The combination of vessel wall imaging (VWI) and MR angiography (MRA) is useful for differentiating between intracranial atherosclerotic disease and arterial dissection. However, additional VWI scans increase total scan time. The purpose of this study was to develop and evaluate a simultaneous acquisition method for VWI and MRA using phase-sensitive inversion recovery (PSIR) in brain MRI.
Methods:
Imaging parameters were optimized using a phantom simulating cerebral blood flow, brain parenchyma, and plaque. The proposed method was validated in an in vivo study by comparing it with the conventional method (T1-turbo spin echo+time of flight-MRA).
Results:
The proposed method achieved a higher contrast ratio than the conventional method. Additionally, the acquisition time was reduced to less than one-half (2 min 18 s vs 7 min 15 s).
Conclusion:
This simultaneous acquisition method using PSIR is useful for brain MRI.
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