CT与调整后的MRI评估鼻窦手术关键标志的比较

R. Landsberg, S. Schneider, M. Masalha, A. Margulis, M. Guindy, J. Luckman
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引用次数: 0

摘要

背景:鼻窦CT是计划鼻窦内窥镜手术(ESS)的首选成像技术。虽然MRI有较好的软组织显示,但由于骨骼显示不理想,因此不常用于ESS。我们假设调整某些MRI参数可以更好地显示骨骼,并使外科医生能够充分识别手术标志。方法:20例确定为ESS候选者的患者接受了鼻窦CT和调整后的MRI检查(共40例)。在每位患者的CT和MRI中,鼻科医生和神经放射科医生独立比较并分级了46个骨结构(每侧23个)。每位观察者共对920个解剖结构进行评分(共1840个结构)。统计分析包括每个观察者的总体和每个变量的评分分布,以及总体一致性。结果:鼻内科医生和神经放射科医生分别对66.8%和86.4%的结构进行评估,MRI图像等于或优于CT。观察者之间的总体一致(77%)是中等的。结论:鼻内科医生更倾向于CT显示骨结构,而神经放射科医生更倾向于MRI。尽管如此,在本研究中使用的MRI方案中,根据两者,大多数骨骼结构都可以通过MRI很好地显示。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparison of CT and adjusted MRI for evaluating paranasal sinuses surgical key landmarks
Background: Sinus CT is the imaging technique of choice for planning endoscopic sinus surgery (ESS). Although MRI has a better soft tissue demonstration, it is not commonly used for ESS due to suboptimal bone demonstration. We hypothesised that adjustment of certain MRI parameters, would allow better demonstration of bones and enable the surgeon to adequately identify surgical landmarks. Methodology: Twenty patients identified as candidates for ESS underwent CT and adjusted MRI exams of the paranasal sinuses (40 in total). rhinologist and a neuroradiologist independently compared and graded 46 bony structures (23 on each side) in each patient's CT and MRI. Overall, 920 anatomical structures were graded by each observer (1840 structures in total). Statistical analysis included overall and per variable grading distribution for each observer, and overall agreement. Results: MRI images were equal, or superior to CT for assessing paranasal anatomy in 66.8% and 86.4% of structures evaluated by the rhinologist and neuroradiologist, respectively. Overall agreement between observers (77%) was moderate. Conclusion: The rhinologist prefers CT demonstration of bony structures, while the neuroradiologist prefers MRI. Still, with the MRI protocol used in this study, according to both, most bony structures are well demonstrated by MRI.
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