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KMID : 1137820200410050179
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의공학회지
2020 Volume.41 No. 5 p.179 ~ p.184
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Scan Time Analysis Using 4D Phase-Contrast MRI According to Scan Parameter: A Phantom Study
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Park Ji-Eun
Kim Jung-Hun
Hwang Moon-Jung
Lee Jong-Min
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Abstract
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The purpose of this study was to evaluate the effect according to the NEX, VENC, targeted cardiac phases on the velocity measurement of 4D phase-contrast MRI. Materials and Methods: The abdominal aortic phantom was made to experiment. The working fluid was mixed with water and glycerin to mimic the density and viscosity of human blood. The inlet velocity was Reynolds number 2000. The experimental conditions were NEX 1 and 4, VENC 102 cm/s and 200 cm/s, and 10 and 15 targeted cardiac phases, respectively. The average flow rate, average velocity, maximum velocity, and cross-section area were measured. Results: As a result of the case-by-case comparison, the error rate was less than 5%. There was no significant difference (p > 0.05). Conclusion: It is expected that this result will be useful for acquiring blood flow information in clinical practice.
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KEYWORD
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4D phase-contrast magnetic resonance imaging, 3D-printed abdominal aorta, Flow analysis, Scan parameter, Scan time
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