Department of Cardiology, Cleveland Clinic, Cleveland, Ohio, USA.
Catheter Cardiovasc Interv. 2011 May 1;77(6):860-5. doi: 10.1002/ccd.22740. Epub 2011 Mar 8.
To establish the feasibility of fusion of a 3-dimensional computed tomography (3D CT) dataset to the routine fluoroscopic image in the cardiac catheterization laboratory.
Routine fluoroscopic imaging in the cardiac catheterization laboratory often does not provide adequate anatomic detail for structural cardiac interventions. The modern C-arm is capable of acquiring CT-like 3D images (Syngo DynaCT), and the overlay of CT-acquired details on the fluoroscopic image may be useful. The feasibility of this new technology has not yet been reported.
Three patients (presenting with three different clinical indications) were selected, all of whom had previously undergone contrast-enhanced chest CT. Anatomic details of interest were marked on the preprocedural CT, and the CT was registered to a DynaCT acquired in the catheterization laboratory. The CT:CT registration was then fused to the "real-time" fluoroscopic image.
Fusion of the CT to the fluoroscopic image was successful in these three patients and provided a substantial degree of anatomic guidance for catheter and device manipulation.
We have demonstrated the ability to delineate cardiovascular structures of interest on the "real-time" fluoroscopic image using CT fusion. Future studies should address whether this technology can reduce overall contrast administration and radiation dose.
确定将三维计算机断层扫描（3D CT）数据集与心脏导管实验室中的常规透视图像融合的可行性。
心脏导管实验室中的常规透视成像通常无法为结构性心脏介入提供足够的解剖细节。现代 C 臂可获取类似 CT 的 3D 图像（Syngo DynaCT），将 CT 获取的细节叠加到透视图像上可能会很有用。这项新技术的可行性尚未得到报道。
选择了 3 名患者（具有 3 种不同的临床指征），他们都曾接受过增强胸部 CT 检查。在术前 CT 上标记感兴趣的解剖细节，并将 CT 与导管实验室中获取的 DynaCT 进行配准。然后，将 CT 与 CT 配准融合到“实时”透视图像中。
在这 3 名患者中，CT 与透视图像的融合均取得成功，为导管和器械操作提供了很大程度的解剖指导。
我们已经证明了使用 CT 融合在“实时”透视图像上描绘心血管感兴趣结构的能力。未来的研究应探讨这项技术是否可以减少整体对比剂用量和辐射剂量。
