Magnetic resonance imaging of the knee with ultrashort TE pulse sequences
Magnetic resonance imaging of the knee with ultrashort TE pulse sequences
复制标题
DOI：
10.1016/j.mri.2004.08.018
复制
发表时间：
2004-10-01
影响因子：
2.5
通讯作者：
Bydder, GM
中科院分区：
文献类型：
--
作者：
Gatehouse, PD;Thomas, RW;Bydder, GM
背景：我们希望评估使用超短 TE (UTE) 脉冲序列对膝盖进行成像的可行性。 主题和方法：使用 UTE (TE=0.08 ms) 序列（包括后期回波）对 5 名志愿者和 16 名患者进行研究。传统的脂肪抑制图像和差异图像也是通过从第一个回波中减去后来的回波来产生的。采用钆双酰胺增强。结果：在肌腱、韧带、半月板和骨膜中获得高信号。在这些结构中可以看到正常的对比度增强。在关节软骨中可见深层和浅层。确定了软骨缺陷。红色区域可以与半月板的白色区域区分开。在减影图像上观察到半月板撕裂和变性，信号低。前交叉韧带和后交叉韧带以及相关疤痕组织内可见增强。结论：超短 TE 成像为可视化解剖结构、控制显着性、观察对比度增强和显示膝关节疾病提供了新的选择。 (C) 2004 Elsevier Inc. 保留所有权利。
Background: We wished to assess the feasibility of imaging the knee with ultrashort TE (UTE) pulse sequences.Subjects and Methods: Five volunteers and 16 patients were studied with UTE (TE=0.08 ms) sequences including later echoes. Conventional fat-suppressed images and difference images were also produced by subtracting a later echo from the first. Gadodiamide enhancement was used.Results: High signal was obtained in tendons, ligaments, menisci and periosteum. Normal contrast enhancement was seen in these structures. Deep and superficial layers were seen in the articular cartilage. Cartilage defects were identified. The red zone could be differentiated from the white zone of the meniscus. Meniscal tears and degeneration were observed with low signal on subtraction images. Enhancement was seen within the anterior and posterior cruciate ligaments and associated scar tissue.Conclusion: Ultrashort TE imaging provides new options to visualize anatomy, manipulate conspicuity, observe contrast enhancement and demonstrate disease of the knee. (C) 2004 Elsevier Inc. All rights reserved.