常见眼内疾病的三维超声表现初探

Preliminary study on three-dimensional ultrasonographic features of ocular diseases

目的探讨眼内常见疾病的三维超声图像特征表现.方法应用三维超声重建技术对常见眼内疾病进行三维超声成像并描述其成像特征.图像采集方式为无定位系统的自由臂扫查,扫查时间为3～5 s.结果 48只患眼中46只获得较为满意的三维图像,患眼内视网膜脱离、脉络膜脱离、玻璃体内机化物的立体形态及范围,晶状体脱离及玻璃体内异物的空间位置,球内肿瘤的立体结构、表面及内部的特征均清晰可见.结论三维超声不但具有采集时间短的优点,而且所重建图像形象、直观、立体感强、空间位置关系明确,同时可观察到病变的表面及内部的细微结构特征,弥补了二维超声的不足,为眼内疾病的诊断提供了更多的信息.

Objective To explore three-dimensional ultrasonographic features of common ocular diseases. Methods To acquire the data, the free-hand scanning without positioning system was employed in 3 to 5 seconds. Following or after acquisitions, the data were processed and 3D image was reconstructed. Then three-dimensional ultrasonographic features of ocular diseases were characterized. Results 3D images were rendered successfully on 46 eyes of 48 ones. The reconstruction of 3D ultrasonography provided clear stereo images in which shape, dimension, structure, location of retinal detachment, choroidal detachment, vitreous fibrous membrane, lens dislocation, intraocular foreign body and intraocular trauma could be clearly demonstrated. Conclusions 3D ultrasonography needs much shorter scanning time with good space visualization. In the diagnosis of ocular diseases 3D ultrasonic reconstruction can provide more useful information than traditional 2D ultrasonography.