|Quantitative Estimation of Renal Function with Dynamic Contrast-Enhanced MRI Using a Modified Two-Compartment Model|
|Chen, Bin1; Zhang, Yudong2; Song, Xiaojian1,3; Wang, Xiaoying1,2; Zhang, Jue1,4; Fang, Jing1,4|
|WOS标题词||Science & Technology|
|研究领域[WOS]||Science & Technology - Other Topics|
|关键词[WOS]||GLOMERULAR-FILTRATION-RATE ; NEPHROGENIC SYSTEMIC FIBROSIS ; FRACTIONAL VASCULAR VOLUME ; PATLAK PLOT TECHNIQUE ; COMPUTED-TOMOGRAPHY ; MAGNETIC-RESONANCE ; COMPARTMENT MODEL ; GRADIENT-ECHO ; HUMAN KIDNEY ; DCE-MRI|
Objective: To establish a simple two-compartment model for glomerular filtration rate (GFR) and renal plasma flow (RPF) estimations by dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI). Materials and
Methods: A total of eight New Zealand white rabbits were included in DCE-MRI. The two-compartment model was modified with the impulse residue function in this study. First, the reliability of GFR measurement of the proposed model was compared with other published models in Monte Carlo simulation at different noise levels. Then, functional parameters were estimated in six healthy rabbits to test the feasibility of the new model. Moreover, in order to investigate its validity of GFR estimation, two rabbits underwent acute ischemia surgical procedure in unilateral kidney before DCE-MRI, and pixel-wise measurements were implemented to detect the cortical GFR alterations between normal and abnormal kidneys.
Results: The lowest variability of GFR and RPF measurements were found in the proposed model in the comparison. Mean GFR was 3.03 +/- 1.1 ml/min and mean RPF was 2.64 +/- 0.5 ml/g/min in normal animals, which were in good agreement with the published values. Moreover, large GFR decline was found in dysfunction kidneys comparing to the contralateral control group.
Conclusion: Results in our study demonstrate that measurement of renal kinetic parameters based on the proposed model is feasible and it has the ability to discriminate GFR changes in healthy and diseased kidneys.
|作者单位||1.Peking Univ, Coll Engn, Beijing 100871, Peoples R China|
2.Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China
3.Peking Univ, Hosp 1, Dept Radiol, Beijing 100871, Peoples R China
4.Chengdu Univ Informat Technol, Dept Elect Engn, Chengdu, Sichuan, Peoples R China
|Chen, Bin,Zhang, Yudong,Song, Xiaojian,et al. Quantitative Estimation of Renal Function with Dynamic Contrast-Enhanced MRI Using a Modified Two-Compartment Model[J]. PLOS ONE,2014,9(8).|
|APA||Chen, Bin,Zhang, Yudong,Song, Xiaojian,Wang, Xiaoying,Zhang, Jue,&Fang, Jing.(2014).Quantitative Estimation of Renal Function with Dynamic Contrast-Enhanced MRI Using a Modified Two-Compartment Model.PLOS ONE,9(8).|
|MLA||Chen, Bin,et al."Quantitative Estimation of Renal Function with Dynamic Contrast-Enhanced MRI Using a Modified Two-Compartment Model".PLOS ONE 9.8(2014).|