2 May 1997 Image-intensifier-based volume tomographic angiography imaging system
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An image intensifier-based rotational volume tomographic digital angiography (VTDA) imaging system has been constructed. The system consists of an x-ray tube and an image intensifier that are separately mounted on a gantry. This system uses an image intensifier coupled to a charge coupled device camera as a 2D detector so that a set of 2D projection can be acquired for a direct 3D reconstruction. This paper presents the results of the system evaluation and preliminary animal studies using the volume tomographic system. The results indicate that the system has isotropic resolution of 0.5-1.0 1p/mm in the x, y and z directions, and the contrast resolution of the current system is 150 Hounsfield Unit for a 2mm vessel at 806 mR exposure. The results from the animal studies demonstrate that VTDA only needs a single injection of contrast and volume scanning to provide adequate image contrast and resolution for quantitative assessment of vascular anatomy.
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Ruola Ning, Ruola Ning, Xiaohui Wang, Xiaohui Wang, David L. Conover, David L. Conover, Xiangyang Tang, Xiangyang Tang, } "Image-intensifier-based volume tomographic angiography imaging system", Proc. SPIE 3032, Medical Imaging 1997: Physics of Medical Imaging, (2 May 1997); doi: 10.1117/12.273989; https://doi.org/10.1117/12.273989

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