在单边尿路阻塞模型中,评估功能与intravoxel不连贯运动
Lingtao Zhang1, Zhihua Zhang2, Wenfeng Mai1
1Medical Imaging Center, The First Affiliated Hospital of Jinan University, Guangzhou, China.
Current urology
|February 11, 2026
概括
内素不连贯运动 (IVIM) 参数可以在没有对比剂的情况下评估功能. 皮层 perfusion 分数 (f) 有效地表明膜过率 (GFR) 在阻塞和恢复期间的变化.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 放射学 放射学是一门学科.
- 医疗成像医学成像
背景情况:
- 对比增强成像对患有损伤的患者构成风险.
- 需要使用非侵入性方法来评估功能并预防损伤.
- 内素不连贯运动 (IVIM) 成像提供了一个潜在的无对比方法.
研究的目的:
- 评估IVIM衍生参数,以评估大鼠模型中的功能.
- 为了将IVIM发现与单光子发射计算机断层扫描 (SPECT) 和膜过率 (GFR) 进行比较.
主要方法:
- 两组大鼠经历了单边的尿路阻塞和随后的释放.
- 测量了IVIM和SPECT参数,包括表面扩散系数 (ADC),纯分子扩散 (D),伪扩散 (D*) 和 perfusion 分数 (f).
- 进行了组织病理学分析和GFR测量;使用ANOVA和Pearson相关性分析数据.
主要成果:
- GFR与ADC和D正相关 (p <0.05).GFR与ADC和D正相关 (p <0.05).
- 皮层 perfusion 分数 (f) 与 GFR 呈现显著的正相关性 (r = 0.841,p < 0.05).
结论:
- IVIM成像有效地跟踪阻塞和再通道化期间的GFR变化.
- 皮层 perfusion 分数 (f) 是一个有前途的非侵入性生物标志物用于GFR评估.
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