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扫描位置对侧直肠-上直肠带的可视化特征的影响,使用高分辨率磁共振成像

Nicholas Tomaras¹, Burce Ozgen¹, Rishi Patel¹

¹From the College of Medicine (N.T.), Radiology (B.O., R.P.) and Ophthalmology and Visual Sciences (N.A., M.C.M.), University of Illinois at Chicago, Chicago, IL.

AJNR. American journal of neuroradiology

|February 16, 2026

概括

侧直肠-上直肠 (LR-SR) 带最好在前部MRI扫描上看到,而后部扫描显示了更多的退行性变化. 标准化成像改善了LR-SR频段分析.

科学领域:

眼科医生眼科眼科
放射学放射学是一门学科.
人体解剖学解剖学解剖学

背景情况:

侧直肠-上直肠 (LR-SR) 带是轨道内的一个重要的解剖结构.
在磁共振成像 (MRI) 上了解其成像特征对于准确诊断至关重要.

研究的目的:

在不同的轨道扫描位置使用MRI分析LR-SR频段的成像特征.
确定最佳扫描位置以可视化LR-SR频段及其特征.

主要方法:

26名患者的48个轨道的高分辨率MRI扫描被两个独立的读者评估.
评估了LR-SR带的特征 (可见性,连续性,超时弓) 在三个预定义的区域相对于光球-光神经结:前部 (区域I),在 (区域II) 和后部 (区域III).

主要成果:

区域I (89.6%) 的LR-SR带可视化最高,其次是区域II (79.2%) 和区域III (47.9%).
带连续性在I区 (94.7%) 最常见,在II区 (68.4%) 和III区 (52.2%) 减少.
在后面,超时弓的增加,从I区的21.1%增加到III区的56.5%. 在前部扫描位置的可复制性更高.

结论:

LR-SR带在冠状MRI上最一致地可视化,它位于地球光神经结合前面.
后部扫描位置更容易显示LR-SR频段的退行性变化.
建议使用标准化冠状图像平面来提高LR-SR频段的可重现性和临床解释.

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