Feasibility of Ultra-Short Echo Time (UTE) Magnetic Resonance Imaging for Identification of Carious Lesions
Feasibility of Ultra-Short Echo Time (UTE) Magnetic Resonance Imaging for Identification of Carious Lesions
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DOI：
10.1002/mrm.22828
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发表时间：
2011-08-01
影响因子：
3.3
通讯作者：
Rasche, Volker
中科院分区：
文献类型：
--
作者：
Bracher, Anna-Katinka;Hofmann, Christian;Rasche, Volker
本研究的目的是调查的潜力，超短回波时间成像评估龋齿病变和早期脱矿。12例疑似龋齿病变的患者进行了牙科磁共振成像研究，包括超短回波时间成像（回波时间= 50 μ s）和自旋回波成像。在牙科磁共振成像之前，所有患者都进行了常规的临床牙科调查，包括牙齿的视觉评估以及牙科X射线成像。所有在X线检查中可识别的病变都可以在超短回波时间图像中清楚地识别，但只有约19%的病变在自旋回波图像中可见。在19%的所有病变中，病变在超短回波时间图像中比在X线图像中更清楚地描绘。继发性病变尤其如此。与X线图像直接比较，所有病变在牙科磁共振成像数据中明显更大。所提供的数据提供的证据表明，龋齿病变可以确定在超短回波时间磁共振成像具有高灵敏度。牙齿磁共振成像中明显较大体积的病变可能归因于脱矿区域中的液体积聚，而没有实质性的矿物结构破坏。Magn Reson Med 66：538-545，2011. (C)2011 Wiley-Liss，Inc.
The objective of this study was to investigate the potential of ultra short echo time imaging for the assessment of caries lesions and early demineralization. 12 patients with suspected caries lesions underwent a dental magnetic resonance imaging investigation comprising ultra short echo time imaging (echo time = 50 mu s) and spin echo imaging. Before the dental magnetic resonance imaging, all patients underwent a conventional clinical dental investigation including visual assessment of the teeth as well as dental x-ray imaging. All lesions identifiable in the x-ray could be clearly identified in the ultra short echo time images, but only about 19% of the lesions were visible in the spin echo images. In 19% of all lesions, the lesions could be more clearly delineated in the ultra short echo time images than in the x-ray images. This was especially the case for secondary lesions. In direct comparison with the x-ray images, all lesions appeared substantially larger in the dental magnetic resonance imaging data. The presented data provide evidence that caries lesions can be identified in ultra short echo time magnetic resonance imaging with high sensitivity. The apparent larger volume of the lesions in dental magnetic resonance imaging may be attributed to fluid accumulation in demineralized areas without substantial breakdown of mineral structures. Magn Reson Med 66:538-545, 2011. (C) 2011 Wiley-Liss, Inc.