研究目的
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.
研究成果
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.
研究不足
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.
1:Experimental Design and Method Selection:
The study involved 72 patients who underwent MRI consisting of DWI, BOLD, and SWI. Patients were classified based on their estimated glomerular filtration rate (eGFR) into severe renal function impairment (sRI), non-severe renal function impairment (non-sRI), or control (CG) groups.
2:Sample Selection and Data Sources:
Patients with arterial hypertension or diabetes with or without chronic kidney disease (CKD) were included. Exclusion criteria included presence of kidney lesions, breath-hold time < 13 s, under 18 years old, and acute renal function impairment.
3:List of Experimental Equipment and Materials:
MRI images were acquired using a
4:0 T Magnetom Verio (Siemens Healthineers). Experimental Procedures and Operational Workflow:
Texture analysis was conducted on the open-source software platform of Imaging Biomarker EXplorer (IBEX). Texture features from the gray-level histogram and the gray-level co-occurrence matrix (GLCM) were extracted.
5:Data Analysis Methods:
Statistical analysis included Pearson correlation, random forest plot, one-way analysis of variance (ANOVA), and receiver operating characteristic curve (ROC) analysis.
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