Guha Sujata, Bhende Muna, Baskaran Mani, Sharma Tarun
Sankara Nethralaya, Vision Research Foundation, Chennai, Tamil Nadu, India.
Ann Acad Med Singap. 2006 Aug;35(8):536-45.
The aim of this study was to investigate the role of ultrasound biomicroscopy (UBM) in imaging anterior segment foreign bodies and compare it with conventional B-scan ultrasound and computed tomography (CT).
The charts of 18 eyes with anterior segment foreign bodies were reviewed. The rates of detection of foreign bodies using ultrasound, CT scan and UBM were compared.
The foreign body detection rates were 36.5% by ultrasound, 88.9% by CT scan, and 94.4% by UBM. The diagnosis of presence of a foreign body using UBM was made based on high reflective echoes causing shadowing or reverberations. In 7 eyes, UBM detected injury to the zonules, guiding the operative procedure. In the 8 eyes for which all tests were performed, rates of detection of foreign bodies were 25% (2/8) with ultrasound, 87.5% (7/8) with CT, and 100% (8/8) with UBM.
UBM is a valuable adjunct for the accurate localisation of small foreign bodies, including cilia. It offers a higher detection rate than that provided by ultrasound and CT scan.
本研究的目的是探讨超声生物显微镜（UBM）在眼前段异物成像中的作用，并将其与传统B超和计算机断层扫描（CT）进行比较。
回顾了18例眼前段异物患者的病历。比较了使用超声、CT扫描和UBM检测异物的比率。
超声检测异物的比率为36.5%，CT扫描为88.9%，UBM为94.4%。使用UBM诊断异物存在是基于高反射回声导致的阴影或混响。在7只眼中，UBM检测到悬韧带损伤，指导了手术操作。在所有检查均进行的8只眼中，超声检测异物的比率为25%（2/8），CT为87.5%（7/8），UBM为100%（8/8）。
UBM是准确定位包括睫毛在内的小异物的有价值辅助手段。它提供了比超声和CT扫描更高的检测率。
