Sharma Sanjay, Gogia Varun, Garg Prerna, Venkatesh Pradeep, Gupta Shikha, Sharma Yograj
*Department of Radiology, All India Institute of Medical Sciences, New Delhi, India; and †Department of Ophthalmology, Dr. Rajendra Prasad Centre for Ophthalmic Science, All India Institute of Medical Sciences, New Delhi, India.
Retina. 2015 Aug;35(8):1656-61. doi: 10.1097/IAE.0000000000000516.
To describe the role of multiplanar reconstruction and three-dimensional volume-rendered imaging in the assessment of silicon-based scleral buckle (SB)-related complications.
Five eyes of five patients with SB-related complications where the history, surgical notes, and clinical examination proved inconclusive were included. Unenhanced axial orbital computed tomography images of all patients were acquired parallel to orbitomeatal line, and images were reviewed in orthogonal planes. The volume rendition of the imaged volume was evaluated in various tilts, with special reference to the spatial relationship of the band-buckle to the globe and bony orbit. All patients underwent imaging-assisted SB removal.
Imaging assisted in in vivo localization of the obscure band or buckle in all five eyes. Band was seen as hyperdense structure encircling whole of the globe, whereas buckle was seen as segmental, broad, hyperdense structure with scleral indentation. Presence of SB was identified in three patients, and globe integrity was shown in the other two. Abnormal anterior displacement of band and buckle was demonstrated in three cases on volume-rendered imaging in relation to lateral orbital rim. Focal exuberant soft-tissue proliferation around the buckle was present in all patients, suggesting chronic inflammation and infection. Successful removal of band and buckle could be achieved, and all patients were relieved of their preoperative complaints. No complication occurred during intraoperative and postoperative period.
Use of multiplanar reconstruction and three-dimensional volume-rendered computed tomography imaging played a pivotal role in surgical success.
描述多平面重建和三维容积再现成像在评估硅基巩膜扣带术(SB)相关并发症中的作用。
纳入5例患有SB相关并发症的患者的5只眼,这些患者的病史、手术记录和临床检查结果均不明确。所有患者均获取了与眶耳线平行的未增强眼眶轴位计算机断层扫描图像,并在正交平面上进行图像分析。对成像容积进行不同倾斜角度的容积再现评估,特别关注带-扣与眼球和眼眶骨的空间关系。所有患者均接受了成像辅助下的SB移除术。
成像有助于对所有5只眼中隐匿的带或扣进行体内定位。带被视为环绕整个眼球的高密度结构,而扣则被视为具有巩膜压痕的节段性、宽阔、高密度结构。3例患者发现存在SB,另外2例显示眼球完整。在容积再现成像中,3例患者的带和扣相对于眶外侧缘出现异常向前移位。所有患者在扣周围均存在局灶性软组织增生,提示慢性炎症和感染。成功移除了带和扣,所有患者术前的不适症状均得到缓解。术中及术后均未发生并发症。
多平面重建和三维容积再现计算机断层扫描成像的应用对手术成功起到了关键作用。