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Evaluation of renal dysfunction using texture analysis based on DWI, BOLD, and susceptibility-weighted imaging

DOI:10.1007/s00330-018-5911-3 期刊:European Radiology 出版年份:2018 更新时间:2025-09-04 15:30:14
摘要: Objective To explore the value of texture analysis based on diffusion-weighted imaging (DWI), blood oxygen level–dependent MRI (BOLD), and susceptibility-weighted imaging (SWI) in evaluating renal dysfunction. Methods Seventy-two patients (mean age 53.72 ± 13.46 years) underwent MRI consisting of DWI, BOLD, and SWI. According to their estimated glomerular filtration rate (eGFR), the patients were classified into either severe renal function impairment (sRI, eGFR < 30 mL/min/1.73 m2), non-severe renal function impairment (non-sRI, eGFR ≥ 30 mL/min/1.73 m2, and < 80 mL/min/1.73 m2), or control (CG, eGFR ≥ 80 mL/min/1.73 m2) groups. Thirteen texture features were extracted and then were analyzed to select the most valuable for discerning the three groups with each imaging method. A ROC curve was performed to compare the capacities of the features to differentiate non-sRI from sRI or CG. Results Six features proved to be the most valuable for assessing renal dysfunction: 0.25QuantileDWI, 0.5QuantileDWI, HomogeneityDWI, EntropyBOLD, SkewnessSWI, and CorrelationSWI. Three features derived from DWI (0.25QuantileDWI, 0.5QuantileDWI, and HomogeneityDWI) were smaller in sRI than in non-sRI; EntropyBOLD and CorrelationSWI were smaller in non-sRI than in CG (p < 0.05). 0.25QuantileDWI, 0.5QuantileDWI, and HomogeneityDWI showed similar capacities for differentiating sRI from non-sRI. Similarly, EntropyBOLD and CorrelationSWI showed equal capacities for differentiating non-sRI from CG. Conclusion Texture analysis based on DWI, BOLD, and SWI can assist in assessing renal dysfunction, and texture features based on BOLD and SWI may be suitable for assessing renal dysfunction during early stages.
作者: Jiule Ding,Zhaoyu Xing,Zhenxing Jiang,Hua Zhou,Jia Di,Jie Chen,Jianguo Qiu,Shengnan Yu,Liqiu Zou,Wei Xing
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To explore the value of texture analysis based on diffusion-weighted imaging (DWI), blood oxygen level–dependent MRI (BOLD), and susceptibility-weighted imaging (SWI) in evaluating renal dysfunction.

Texture analysis based on DWI, BOLD, and SWI can assist in assessing renal dysfunction, and texture features based on BOLD and SWI may be suitable for assessing renal dysfunction during early stages.

1. Small sample size in the eGFR ranges of 30 to 60 mL/min/1.73 m2, and 60 to 80 mL/min/1.73 m2. 2. A bi-exponential fitting model is not performed on free-breathing DWI with multiple b-factors. 3. While the biomarker-based eGFR was based on bilateral renal function, the texture features were measured for the right kidney. 4. The cost and time effectiveness of MRI was relatively low in assessing renal dysfunction.

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