岩尖积液的CT及MRI表现

发布时间：2018-02-08 23:19

本文关键词： 岩骨尖炎症体层摄影术 X线计算机磁共振成像　出处：《广东医学》2014年17期 　论文类型：期刊论文

【摘要】：目的通过观察岩尖积液的CT、MRI征象,分析岩尖积液的影像学特征及CT、MRI的诊断价值。方法收集有CT和(或)MRI资料的岩尖积液患者24例。在图像上观察病灶的形态、大小、密度或信号特点、强化模式及与周围组织的关系等影像表现。结果 24例中岩尖积液累及多个气房21例,单个气房病变3例。其中13例行CT检查的患者中,与脑灰质相比,病变呈低密度8例,呈等密度4例,不同气房内分别呈等密度和低密度1例,各气房内病灶密度均匀;12例病变周边骨质有硬化,1例无明显硬化边。15例患者行MRI检查,与脑灰质相比,T1WI呈低信号8例,呈等信号7例;T2WI均呈高信号;T1WI、T2WI信号均匀。其中9例行增强扫描,病变气房、岩尖及其周围脑膜均未见异常强化。所有病变侧岩尖均无骨质破坏,骨皮质无中断,无膨胀表现。结论岩尖积液典型表现为单侧岩尖多个或单个气房内密度增高,T1WI呈低或等信号,T2WI呈高信号,增强扫描无强化,无骨质破坏,岩尖无膨胀。
[Abstract]:Objective to analyze the imaging features of petroclival effusion and the diagnostic value of CT MRI by observing the CT MRI features of the petrosal apical effusion. Methods 24 patients with petroclival effusion with CT and / or MRI data were collected, and the shape and size of the lesions were observed on the images. Results in 24 cases, the petroclival effusion involved multiple gas chambers in 21 cases, and single gas chamber lesions in 3 cases. Among them, 13 cases with CT examination were compared with gray matter. The lesions showed low density in 8 cases, isodensity in 4 cases, and isodensity and low density in different air chambers respectively. MRI examination was performed in 12 cases with homogeneous density and 12 cases with sclerotic bone around the lesion. 15 cases had no obvious sclerosing edge. Compared with gray matter, 8 cases showed hypointensity on T1WI, 7 cases showed iso-signal on T2WI, all of them showed homogeneous signal intensity on T2WI. Among them, 9 cases showed enhanced scanning, no abnormal enhancement was found in the gas chamber, petrosal apex and the surrounding meninges, and no bony destruction was found in all the lesions. Conclusion the typical manifestations of petrosal apical effusion are high signal intensity on T1WI with low or equal signal intensity on T1WI, no enhancement on enhanced scan, no bone destruction and no expansion of petrosal apex on T1WI.
【作者单位】：广东省人民医院(广东省医学科学院)放射科;
【分类号】：R764;R445.2;R816.96

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