A Characteristic of Angiographic Cone-beam CT
| Autor: | Tadashi Takase, Katsunori Kinouchi, Toshio Take, Yasuo Nakazawa |
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| Rok vydání: | 2009 |
| Předmět: |
Phantoms
Imaging business.industry Computer science Image quality Radiotherapy Planning Computer-Assisted Angiography Image processing General Medicine Cone-Beam Computed Tomography Radiography Interventional computer.software_genre Flat panel detector Voxel Mockup Tomography Nuclear medicine business Projection (set theory) Rotation (mathematics) computer Biomedical engineering |
| Zdroj: | Japanese Journal of Radiological Technology. 65:755-764 |
| ISSN: | 1881-4883 0369-4305 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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