Thakkar Rashmi S, Subhawong Ty, Carrino John A, Chhabra Avneesh
Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University-School of Medicine, Baltimore, MD 21287, USA.
Top Magn Reson Imaging. 2011 Apr;22(2):71-81. doi: 10.1097/RMR.0b013e318259ff95.
Magnetic resonance imaging (MRI) remains the imaging modality of choice for morphological and compositional evaluation of the articular cartilage. Accurate detection and characterization of cartilage lesions are necessary to guide the medical and surgical therapy and are also critical for longitudinal studies of the cartilage. Recent work using 3.0-T MRI systems shows promise in improving detection and characterization of the cartilage lesions, particularly with increasing use of high-resolution and high-contrast 3-dimensional sequences, which allow detailed morphological assessment of cartilage in arbitrary imaging planes. In addition, implementation of biochemical sequences in clinically feasible scan times has a potential in the early detection of cartilage lesions before they become morphologically apparent. This article discusses relative advantages and disadvantages of various commonly used as well as experimental MRI techniques to directly assess the morphology and indirectly evaluate the biochemical composition of the articular cartilage.
磁共振成像(MRI)仍然是用于关节软骨形态和成分评估的首选成像方式。准确检测和表征软骨损伤对于指导医学和手术治疗是必要的,并且对于软骨的纵向研究也至关重要。最近使用3.0-T MRI系统的研究在改善软骨损伤的检测和表征方面显示出前景,特别是随着高分辨率和高对比度三维序列的使用增加,这允许在任意成像平面中对软骨进行详细的形态学评估。此外,在临床可行的扫描时间内实施生化序列在软骨损伤在形态上变得明显之前的早期检测方面具有潜力。本文讨论了各种常用以及实验性MRI技术直接评估关节软骨形态和间接评估生化成分的相对优缺点。