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目的:探索三维超声成像技术在临床上评估和测量青少年特发性脊柱侧凸(AIS)患者椎体侧凸角度的可行性;通过与磁共振成像(MRI)的测量方法比较,评价三维超声测量结果的信度与效度。方法:16例AIS女性患者在同一上午进行三维超声和MRI的全脊柱扫描。将三维超声和MRI的图像进行随机分配,两位评测者随机抽取图像进行测量;所有图像均需进行3次测量,每次测量间隔1周,且测量过程中对两位评测者采取盲法。在冠状面上,三维超声成像采用椎板中心法(COL)测量AIS的椎体侧凸角度;而MRI成像采用Cobb方法。通过计算组内相关系数(ICC[2,k])评价三维超声测量方法的信度;通过与MRI测量结果比较,采用配对t检验及Pearson相关系数,评价三维超声测量方法的效度。结果:在冠状面上,三维超声成像COL测量方法评估AIS患者椎体侧凸角度具有较高的评测者内和评测者间信度(ICC[2,K]>0.9,P<0.05)。三维超声成像COL测量方法和MRI成像Cobb测量方法评估AIS椎体侧凸角度的结果之间没有显著性差异(P<0.05);两种测量方法具有较高的相关性(r>0.9)。结论:三维超声成像技术可用于评估AIS患者椎体在冠状面上的侧凸角度,具有较高的信度和效度。
OBJECTIVE: To explore the feasibility of three-dimensional ultrasound imaging in the clinical assessment and measurement of vertebral body angle in adolescent idiopathic scoliosis (AIS). By comparing with magnetic resonance imaging (MRI) The reliability and validity of the results. METHODS: Sixteen AIS female patients underwent full three-dimensional ultrasound and MRI scans on the same morning. Three-dimensional ultrasound and MRI images were randomly assigned and the two evaluators randomly selected images for measurement. All images were subjected to three measurements at a time interval of one week, and blinded the two evaluators during the measurement. In the coronal plane, vertebral body center angle (COL) was used to measure the vertebral body flank angle in three-dimensional echocardiography; Cobb imaging was used for MRI imaging. The reliability of three-dimensional ultrasound was evaluated by calculating the intraclass correlation coefficient (ICC [2, k]). The validity of three-dimensional ultrasound was evaluated by comparing with MRI measurement, paired t-test and Pearson correlation coefficient. Results: In the coronal plane, the three-dimensional ultrasound imaging COL measurement method for assessing the angle of vertebral body in patients with AIS had a higher interobserver and interobserver reliability (ICC [2, K]> 0.9, P <0.05). There was no significant difference (P <0.05) between the three-dimensional ultrasound imaging COL measurement and MRI imaging Cobb measurement method in evaluating the vertebral angle of AIS vertebrae. There was a high correlation between the two measurement methods (r> 0.9). Conclusion: Three-dimensional ultrasound imaging can be used to evaluate the coronal angle of vertebral body in AIS patients with high reliability and validity.