| 李明利,朱以诚,冯逢,有慧,胡凌,金征宇.三英寸表面线圈在磁共振颈动脉斑块成像中的应用[J].中国医学影像技术,2007,23(12):1809~1812 |
| 三英寸表面线圈在磁共振颈动脉斑块成像中的应用 |
| Carotid plaque imaging: high-resolution MR imaging with 3-inch surface coil |
| 投稿时间：2007-09-21 |
| DOI： |
| 中文关键词: 颈动脉 磁共振成像 三英寸表面线圈 |
| 英文关键词:Carotid artery Magnetic resonance imaging 3-inch surface coil |
| 基金项目: |
| 作者 | 单位 | E-mail | | 李明利 | 中国医学科学院,中国协和医科大学,北京协和医院放射科,北京 100730 | pumclml@126.com | | 朱以诚 | 中国医学科学院,中国协和医科大学,北京协和医院神经内科, 北京 100730 | | | 冯逢 | 中国医学科学院,中国协和医科大学,北京协和医院放射科,北京 100730 | | | 有慧 | 中国医学科学院,中国协和医科大学,北京协和医院放射科,北京 100730 | | | 胡凌 | 中国医学科学院,中国协和医科大学,北京协和医院放射科,北京 100730 | | | 金征宇 | 中国医学科学院,中国协和医科大学,北京协和医院放射科,北京 100730 | |
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| 中文摘要: |
| 目的 研究三英寸表面线圈应用于颈动脉斑块高分辨率MR成像的可行性及临床应用价值。 方法 对33例动脉粥样硬化的患者行MR成像(GE 1.5T)。使用两个3英寸线圈分别至于两侧颈动脉分叉处。成像序列包括横断面双翻转T1WI、快速自旋回波T2WI、PDWI,及3D TOF序列。由两位医师共同评价每个序列的图像质量并综合四个序列进行斑块成分分析,斑块成分的分析进行评价者之间的一致性检验。 结果 按图像质量分级评价系统(1~5分,5分为最好)对两侧颈动脉分别进行评价,共评价了264个序列图像,图像质量评分≤2分的序列27个(占10.2％)。评分≥4分的序列147个(55.7％)。将含一个序列≤2分的检查排除,共50支血管可用于斑块成分分析,显示了斑块32个(20例患者)。其中明确有脂核16个,出血10个,破裂纤维帽5个,钙化15个,一致性检验Kappa值分别是0.81(95％CI: 0.61 to 1.01);0.86(0.66 to 1.04);0.45 (0.05 to 0.85);0.87(0.70 to 1.00)。 结论 使用3英寸线圈进行颈动脉高分辨率磁共振成像可获得满意的图像质量,不同评价者进行斑块成分的分析具有较高的一致性,能够对斑块的组织成分作出较准确的判断。 |
| 英文摘要: |
| Objective To study the value of 3-inch surface coil in MR imaging of carotid plaques. Methods Thirty-three patients with atherosclerosis underwent MR imaging with a 1.5-T system (Signa Excite HD) and two 3-inch coil. A standardized protocol was performed to obtain 4 different contrast-weighted images (3D TOF, T1, and PD/T2-weighted) of the carotid arteries. An image-quality rating (5-point scale: 1=poor, 5=excellent) for each sequence was evaluated by two radiologists. Also 4 components of carotid plaque were analyzed based on 4 sequences. Results Totally 264 sequences (bilateral carotid arteries) were reviewed. Images with image quality≤2 were found in only 27 sequences (10.2%), and images with quality≥4 were found in 147 sequences (55.7%). Images with image-quality≥3 were included for plaque analysis, including 50 carotid arteries. Among them 32 plaques were found in 20 patients.Components analysis demonstrated 16 plaques with unambiguous lipid-rich/necrotic core (LR/NC), 10 plaques with hemorrhage, 15 plaques with calcification and 5 plaques with ruptured fibrous cap. The inter-reader agreement (Kappa, 95%CI) was excellent for evaluation of LR/NC (0.81; 0.61 to 1.01), hemorrhage (0.86; 0.66 to 1.04), calcification (0.87; 0.70 to 1.00), and moderate for evaluation of ruptured fibrous cap (0.45; 0.05 to 0.85). Conclusion High-resolution MR imaging with 3-inch surface coil are capable of obtaining satisfied image quality in most of the carotid arteries. The evaluation of imaging characteristics of different plaque components is accurate with an excellent to moderate inter-reader agreement. |
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