[A characteristic of angiographic cone-beam CT].
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.
Takase
Tadashi
T
Department of Radiology, Showa University Hospital.
Kinouchi
Katsunori
K
Take
Toshio
T
Nakazawa
Yasuo
Y
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