Role of ultrasound biomicroscopy (UBM) in the detection and localisation of anterior segment foreign bodies
Sujata GUHA; Muna BHENDE; Mani BASKARAN; Tarun SHARMA.
Annals of the Academy of Medicine, Singapore
; : 536-545, 2006.
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| WPRIM | ID: wpr-275311
<p><b>INTRODUCTION</b>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).</p><p><b>MATERIALS AND METHODS</b>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.</p><p><b>RESULTS</b>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.</p><p><b>CONCLUSION</b>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.</p>
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