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Article

Using Non-Contrast MRA to Discriminate between Obstructive and Nonobstructive Venous Diseases of the Legs

1
Department of Diagnostic Radiology, Chia Yi Chang Gung Memorial Hospital and Chang Gung University, Chiayi 61363, Taiwan
2
Division of Thoracic and Cardiovascular Surgery, Chia Yi Chang Gung Memorial Hospital and Chang Gung University, Taoyuan 33323, Taiwan
3
Department of Cardiology, Chia Yi Chang Gung Memorial Hospital and Chang Gung University, Taoyuan 33323, Taiwan
4
Institute of Imaging and Biomedical Photonics, National Yang Ming Chiao Tung University and Department of Medical Research, Chi-Mei Medical Center, Tainan 71004, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Denisa Muraru
Diagnostics 2021, 11(8), 1392; https://doi.org/10.3390/diagnostics11081392
Received: 16 April 2021 / Revised: 25 July 2021 / Accepted: 29 July 2021 / Published: 31 July 2021
(This article belongs to the Special Issue New Trends in Vascular Imaging)
Background: Venous interventions of the legs are less predictable owing to a lock of objective tools. Methods: One hundred and twenty patients with lower extremity venous disease were evaluated anatomically using TRANCE MRI. Then, a QFlow analysis was performed in 53 patients with only one leg affected for hemodynamic evaluation. Those patients with complete QFlow were classified into obstructive and nonobstructive. Results: The QFlow—namely, stroke volume, forward flow volume, mean flux, stroke distance (SD), and mean velocity (MV) in the external iliac vein (EIV), femoral vein (FV), popliteal vein (PV), and great saphenous vein (GSV). The obstructed group had a shorter SD and lower MV in the EIV, EIV/FV, and GSV/PV (SD: p-values of 0.025, 0.05, and 0.043, respectively; MV: p-values of 0.02, 0.05, and 0.048, respectively). A good performance in discriminating obstructive venous disease was reported for SD in the EIV (area under the curve (AUC) = 67.9%, 95% confidence interval (CI) = 53.2–82.7%), EIV/FV (AUC = 72.4%, 95% CI = 58.2–86.5%), and GSV/PV (AUC = 67.9%, 95% CI = 51.7–84.1%). The SD in the EIV, EIV/FV, and GSV/PV had the ability to discriminate between obstructive and nonobstructive diseases (p-values of 0.025, 0.005, and 0.043). The MV in the EIV, EIV/FV, and GSV/PV had ability to discriminate between obstructive and nonobstructive venous diseases (p-values of 0.02, 0.005, and 0.048). Conclusions: The SD and MV were lower for obstructive than nonobstructive disease in the EIV. View Full-Text
Keywords: veins; magnetic resonance imaging (MRI); obstructive; not contrast media; MTS veins; magnetic resonance imaging (MRI); obstructive; not contrast media; MTS
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MDPI and ACS Style

Chen, C.-W.; Tseng, Y.-H.; Wong, M.Y.; Lin, Y.-H.; Yang, T.-Y.; Hsu, Y.-C.; Lin, B.-S.; Huang, Y.-K. Using Non-Contrast MRA to Discriminate between Obstructive and Nonobstructive Venous Diseases of the Legs. Diagnostics 2021, 11, 1392. https://doi.org/10.3390/diagnostics11081392

AMA Style

Chen C-W, Tseng Y-H, Wong MY, Lin Y-H, Yang T-Y, Hsu Y-C, Lin B-S, Huang Y-K. Using Non-Contrast MRA to Discriminate between Obstructive and Nonobstructive Venous Diseases of the Legs. Diagnostics. 2021; 11(8):1392. https://doi.org/10.3390/diagnostics11081392

Chicago/Turabian Style

Chen, Chien-Wei, Yuan-Hsi Tseng, Min Y. Wong, Yu-Hui Lin, Teng-Yao Yang, Yin-Chen Hsu, Bor-Shyh Lin, and Yao-Kuang Huang. 2021. "Using Non-Contrast MRA to Discriminate between Obstructive and Nonobstructive Venous Diseases of the Legs" Diagnostics 11, no. 8: 1392. https://doi.org/10.3390/diagnostics11081392

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