Eley Karen A, Watt-Smith Stephen R, Golding Stephen J
*Department of Radiology, Addenbrookes Hospital, Cambridge †Department of Surgical Sciences, University of Oxford, Oxford ‡Eastman Dental Institute, University College London, London §University College, University of Oxford, Oxford, UK.
J Craniofac Surg. 2017 Mar;28(2):463-467. doi: 10.1097/SCS.0000000000003219.
Three-dimensional (3D) reconstructed computed tomography (CT) imaging has become an integral component of craniomaxillofacial patient care. However, with increasing concern regarding the use of ionizing radiation, particularly in children with benign conditions who require repeated examinations, dose reduction and nonionizing alternatives are actively being sought. The "Black Bone" magnetic resonance imaging (MRI) technique provides uniform contrast of the soft tissues to enhance the definition of cortical bone. The aim of this study was to develop methods of 3D rendering of the craniofacial skeleton and to ascertain their accuracy. "Black Bone" MRI datasets acquired from phantoms, adult volunteers and patients were segmented and surface and/or volume rendered using 4 commercially available or open source software packages. Accuracy was explored using a custom phantom (permitting direct measurement), CT and MRI. "Black Bone" MRI datasets were successfully used to create 3D rendered images of the craniofacial skeleton in all 4 software packages. Comparable accuracy was achieved between CT and MRI 3D rendered images of the phantom. The "Black Bone" MRI technique provides a viable 3D alternative to CT examination when imaging the craniofacial skeleton.
三维（3D）重建计算机断层扫描（CT）成像已成为颅颌面患者护理中不可或缺的一部分。然而，随着人们对电离辐射使用的日益关注，尤其是在需要反复检查的良性疾病儿童中，正在积极寻求降低剂量和非电离替代方案。“黑骨”磁共振成像（MRI）技术可提供软组织的均匀对比度，以增强皮质骨的清晰度。本研究的目的是开发颅面骨骼的3D渲染方法并确定其准确性。从体模、成年志愿者和患者获取的“黑骨”MRI数据集使用4个商用或开源软件包进行分割以及表面和/或体积渲染。使用定制体模（允许直接测量）、CT和MRI来探究准确性。在所有4个软件包中，“黑骨”MRI数据集均成功用于创建颅面骨骼的3D渲染图像。体模的CT和MRI 3D渲染图像之间实现了相当的准确性。在对颅面骨骼进行成像时，“黑骨”MRI技术为CT检查提供了一种可行的3D替代方法。
