连续时间随机步行和分数顺序微积分模型的比较,用于描述乳腺病变,使用历史图分析
Caili Tang1, Feng Li2, Litong He1
1Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
Magnetic resonance imaging
|February 2, 2024
概括
与空间和时间异质性参数相比,扩散系数参数在区分良性和恶性乳腺病变方面表现出优异的诊断性能. 全瘤组图分析有助于乳腺病变的表征.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 在瘤学瘤学.
背景情况:
- 区分良性和恶性乳腺病变对于有效的患者管理至关重要.
- 扩散权重成像 (DWI) 提供了对组织微观结构的洞察.
- 数学模型和直方图分析可以增强DWI的诊断能力.
研究的目的:
- 为了比较不同的DWI数学模型的诊断性能.
- 评估空间和时间异质性参数是否在区分乳腺病变时比扩散系数提供更好的准确性.
- 为了进行这一比较,使用全瘤组图分析.
主要方法:
- 对146例乳腺损伤病例 (104例恶性,42例良性) 的回顾性分析.
- 乳房MRI使用3.0T扫描仪进行,同时使用多切片 (SMS) rs-EPI.
- 使用ROC曲线分析和比较了表面扩散系数 (ADC),连续时间随机步行 (CTRW) 和分数顺序微积分 (FROC) 衍生参数的直方体指标.
主要成果:
- DFROC-中位数显示了0.965的曲线下的最高面积 (AUC),用于区分乳腺病变.
- 时间异质性 (αCTRW-中位数,AUC=0.850) 显示出明显更好的性能比空间异质性 (βCTRW-中位数,AUC=0.741).
- 综合的CTRW参数略高于FROC参数 (AUC=0.971对比0.965),尽管不是显著的.
结论:
- 扩散系数参数表现出优越的诊断性能超过时空和空间异质性参数的乳腺损伤差异化.
- 对DWI参数的全瘤组图分析是特征性乳腺病变的宝贵工具.
- 进一步的研究可能会探索组合参数模型,以提高诊断准确度.
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