Novel Technique to Measure Pulse Wave Velocity in Brain Vessels Using a Fast Simultaneous Multi-Slice Excitation Magnetic Resonance Sequence
- Authors
- Jung, Ju-Yeon; Lee, Yeong-Bae; Kang, Chang-Ki
- Issue Date
- Oct-2021
- Publisher
- MDPI
- Keywords
- Keyhole technique; Magnetic resonance imaging; Pulse wave velocity; Simultaneous multi-slice; Stroke
- Citation
- Sensors, v.21, no.19
- Journal Title
- Sensors
- Volume
- 21
- Number
- 19
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/82541
- DOI
- 10.3390/s21196352
- ISSN
- 1424-8220
- Abstract
- In this study, we proposed a novel pulse wave velocity (PWV) technique to determine cerebrovascular stiffness using a 3-tesla magnetic resonance imaging (MRI) to overcome the vari-ous shortcomings of existing PWV techniques for cerebral-artery PWV, such as long scan times and complicated procedures. The technique was developed by combining a simultaneous multi-slice (SMS) excitation pulse sequence with keyhole acquisition and reconstruction (SMS-K). The SMS-K technique for cerebral-artery PWV was evaluated using phantom and human experiments. In the results, common and internal carotid arteries (CCA and ICA) were acquired simultaneously in an image with a high temporal resolution-of 48 ms for one measurement. Vascular signals at 500 time points acquired within 30 s could generate pulse waveforms of CCA and ICA with 26 heartbeats, allowing for the detection of PWV changes over time. The results demonstrated that the SMS-K technique could provide more PWV information with a simple procedure within a short period of time. The procedural convenience and advantages of PWV measurements will make it more ap-propriate for clinical applications. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
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