Robertson D D, Sutherland C J, Chan B W, Hodge J C, Scott W W, Fishman E K
Mallinckrodt Institute of Radiology, Washington University Medical Center, St. Louis, MO 63110, USA.
J Comput Assist Tomogr. 1995 Nov-Dec;19(6):967-74. doi: 10.1097/00004728-199511000-00024.
The goal of this study was to demonstrate the feasibility and test the diagnostic performance of a new technology, 3D volumetric holography, for imaging pelvic fractures. The management of pelvic fractures may be complex, and advanced imaging studies such as CT are frequently indicated. Multiplanar CT reformations and 3D renderings provide clinically useful and complementary display of the directly acquired CT data. With the recent availability of volumetric multiple exposure holograms, produced from serial image data, it is now possible to produce true 3D images of the pelvis. In the hologram, one may view the CT data in 3D or as individual planar slices constituting the whole 3D pelvis. The diagnostic performance of the volumetric multiple exposure holograms was tested against routine radiography, CT, and 3D volumetric CT reconstructions.
Routine radiography and CT were performed in 15 patients with suspected pelvic fractures. Volumetric multiple exposure holograms and 3D volumetric CT reconstructions were created from the CT data. Axial and multiplanar reformation CT images were used as the standard for fracture, diastasis, and intraarticular fragment detection.
Radiograms detected 39 of 50 of the fractures and diastases and no intraarticular fragments. The 3D CT reconstructions and the holograms viewed as 3D objects alone missed two small fractures of the anterior column and one hip with intraarticular bone fragments. When the volumetric multiple exposure holograms were viewed as a 3D object and as individual planar slices constituting the whole, their results were the same as the standard.
Volumetric multiple exposure holograms were as sensitive and specific as axial CT and multiplanar reformations in detecting fracture pathology. By containing and making available, from one image, both planar and 3D information, volumetric multiple exposure holograms detected subtle anatomical features that were hidden by overlapping structures in the radiographs and the 3D CT images.
本研究的目的是证明一种新技术——三维体积全息术用于骨盆骨折成像的可行性，并测试其诊断性能。骨盆骨折的处理可能很复杂，通常需要进行诸如CT等先进的影像学检查。多平面CT重建和三维渲染为直接获取的CT数据提供了临床有用且互补的显示。随着近期从序列图像数据生成体积多重曝光全息图的实现，现在有可能生成骨盆的真实三维图像。在全息图中，可以以三维方式查看CT数据，也可以将其视为构成整个三维骨盆的各个平面切片。针对常规X线摄影、CT和三维体积CT重建，测试了体积多重曝光全息图的诊断性能。
对15例疑似骨盆骨折的患者进行了常规X线摄影和CT检查。从CT数据创建了体积多重曝光全息图和三维体积CT重建。轴位和多平面重建CT图像用作骨折、分离和关节内碎片检测的标准。
X线片检测出50处骨折和分离中的39处，未检测到关节内碎片。单独将三维CT重建和全息图视为三维物体时，漏诊了前柱的两处小骨折和一处有关节内骨碎片的髋关节骨折。当将体积多重曝光全息图既视为三维物体又视为构成整体的各个平面切片时，其结果与标准相同。
体积多重曝光全息图在检测骨折病变方面与轴位CT和多平面重建一样敏感和特异。通过在一幅图像中包含并提供平面和三维信息，体积多重曝光全息图检测到了X线片和三维CT图像中因重叠结构而隐藏的细微解剖特征。
