title: [A characteristic of angiographic cone-beam CT].
abstract: Angiographic cone-beam CT, called DynaCT by SIEMENS, is a 3D imaging tool reconstructed from projection data by a rotational C-arm with a flat panel detector. It can visualize low-contrast objects such as soft tissue or small vessels as well as high-contrast structures such as enhanced vessels or bone. We need to understand its image characteristics and dose distribution during 200 degree rotation around a patient. In this research, we evaluated fundamental characteristics and dose effectiveness for optimized clinical images. DynaCT, including soft tissue information and isochronal voxel data along the z-axis, could provide enough CT-like image quality for IVR use. In addition, evaluation of accumulated dose distribution helped us to predict and avoid the occurrence of radiodermatitis. Thus, DynaCT is useful as a support and navigation tool for IVR.
authors: Department of Radiology, Showa University Hospital.
authors: Tadashi
authors: T
authors: Takase
authors: Katsunori
authors: K
authors: Kinouchi
authors: Toshio
authors: T
authors: Take
authors: Yasuo
authors: Y
authors: Nakazawa
mesh_terms: D000792:Angiography / Q000295:instrumentation / Q000379:methods; D054893:Cone-Beam Computed Tomography / Q000295:instrumentation / Q000379:methods; D019047:Phantoms, Imaging; D015641:Radiography, Interventional / Q000295:instrumentation / Q000379:methods; D011880:Radiotherapy Planning, Computer-Assisted