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http://dx.doi.org/10.7742/jksr.2021.15.3.281

Effects of Flow Rates and CS Factors on TOF MRA using Compressed Sensing  

Kim, Seong-Ho (Department of Radiological Technology, Daejeon Health Institute of Technology)
Jeong, Hyun-Keun (HK Research Center Inc.)
Yoo, Se-Jong (Department of Radiological Technology, Daejeon Health Institute of Technology)
Publication Information
Journal of the Korean Society of Radiology / v.15, no.3, 2021 , pp. 281-291 More about this Journal
Abstract
This study aimed to measure the quantitative changes in images according to the use of compressed sensing in expressing the slow flow rate in TOF MRA test using magnetic resonance imaging. This study set different blood flow rate sections by using auto-injector and flow phantom and compared changes in the SNR, CNR, SSIM, and RMSE measurements by different CS factors between TOF with CS and TOF without CS. One-way ANOVA was performed to test the effect on the image induced by the increase of the CS factor. The results revealed that TOF MRA with CS significantly decreased scan time without significantly affecting SNR and CNR compared to TOF MRA with CS. On the other hand, the differences in SSIM and RMSE between TOF with CS and TOF without CS increased as the CS factor increased. Therefore, it is necessary to efficiently reduce scan time by adapting the CS technique while considering the appropriate range of the CS factor. Additionally, more studies are needed to evaluate CS factors and the similarity precision of images further.
Keywords
Compressed sensing; 3D TOF MRA; Hemodynamics; MR flow effect;
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