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Quantitative Analysis of Fluid Velocity and Signal Loss of the TOF-MRA in a 3.0T MR System: Using the Flow Rate Control Phantom

한국방사선학회논문지 2020년 14권 7호 p.965 ~ 973
백상훈, 정진헌, 이예은, 곽민영, 윤준, 정다빈, 오현식, 허영철,
소속 상세정보
백상훈 ( Back Sang-Hoon ) - Eulji University Department of Radiological Science
정진헌 ( Jeong Jin-Heon ) - Eulji University Department of Radiological Science
이예은 ( Lee Ye-Eun ) - Eulji University Department of Radiological Science
곽민영 ( Gwak Min-Young ) - Eulji University Department of Radiological Science
윤준 ( Yoon Jun ) - Eulji University Department of Radiological Science
정다빈 ( Jung Da-Bin ) - Eulji University The Graduate School Department of Radiological Science
오현식 ( Oh Hyun-Sik ) - Samsung Medical Center Department of Diagnostic Radiology
허영철 ( Heo Yeong-Cheol ) - Eulji University Department of Radiological Science

Abstract


The purpose of this study was to quantitatively correlate the change of flow velocity and signal voiding in TOF-MRA. We made our phantom to control the flow velocity, and changed the flow velocity in 16 steps from 8.0 to 127.3 mc/s. The TOF-MRA test was performed using a 3.0T MRI system and the signal intensity was measured by classifying the signal voiding length and image into the In flow, Mid flow, and Out flow. The length of signal voiding was the longest when the flow velocity was 127.3 cm/s and the signal intensity decreased with increasing flow velocity(p<0.05). In flow(-.547) and Mid flow(-.643) were negatively correlated with flow velocitys(p<0.05). In conclusion, it was confirmed that the increase in flow velocity was a major factor causing signal voiding in TOF-MRA. In the future, this study will provide basic data when studying sequences and parameters to reduce signal voiding in models with a high flow velocity.

키워드

TOF-MRA; Flow rate control phantom; Flow phantom; Signal void; perfusion phantom

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