MRI三维重建及旋转分割法对膝关节骨性关节炎患者半月板形态、位置变化的临床对比研究

doi:10.13418/j.issn.1001-165x.2015.04.008

Abstract

Abstract:

Objective　Using the magnetic resonance imaging 3D reconstruction and rotation segmentation methods to measure the meniscuses of patients with knee osteoarthritis and normal adults, and the morphological and positional changes of the meniscus on patients with osteoarthritis and its clinical significance were explored.　Methods　20 cases of patients with knee osteoarthritis (II, III grade) involving 20 knee joints were selected from our hospital as osteoarthritis group between January 2013 to February 2014. The other,10 cases of normal people, involving 10 knee joints were chosen as a normal group. The age, sex, body mass index were matched between the two groups. Firstly, all subjects were scanned using thin slices of MRI, and the images obtained were then transferred for the post-processing workstation of Siemens for three-dimensional reconstruction and segmentation of the images using the method of range radials. Lastly, the meniscus was measured in the images we segmented. The entire width of meniscus, the width covering the tibia platform of the meniscus and the thickness of the meniscus were measured for quantitative indicators to study.　Results　No significant differences was found between the two groups in the entire width of medial meniscus in all directions, whereas, the width covering the tibia platform of the meniscus from 60° to 120° was smaller in OA than in non-OA knees (P＜0.05) and the thickness of the medial meniscus from 60 °to 130 ° was thicker in OA than in non-OA knees (P＜0.05). There were significant differences in measurement of the lateral meniscus between the two groups. The entire width and the width covering the tibia platform of lateral meniscus from 10° to 50° and 10° to 50° were greater in OA than in non-OA knees (P＜0.05) and the thickness of the lateral meniscus from 120° to 170° were thicker in OA than in non-OA knees (P＜0.05). Conclusions　The study provides a new check method and train of thought for display and diagnosis of the meniscus with MRI. It is found that the morphology and positions of the meniscus in patients with osteoarthritis have changed and this changes are associated with knee osteoarthritis.

Key words: Meniscus, Quantitative measurement, Magnetic resonance imaging, Radial ranges, Osteoarthritis

References

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Clinical comparative study on morphology and positional changes of meniscus in patients with knee osteoarthritis-By Magnetic resonance imaging 3D reconstruction and rotation segmedtation methods

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