Development and evaluation of a real-time three-dimensional CT (4D-CT) scanner

Yasuo Saito; Hiroshi Aradate; Hiroaki Miyazaki; Yoji Kudo; Kazuhiko Tsujita; Nobuhisa Shimadu; Yuji Sawanaga

doi:10.1117/12.465631

3 May 2002 Development and evaluation of a real-time three-dimensional CT (4D-CT) scanner

Yasuo Saito, Hiroshi Aradate, Hiroaki Miyazaki, Yoji Kudo, Kazuhiko Tsujita, Nobuhisa Shimadu, Yuji Sawanaga

Proceedings Volume 4682, Medical Imaging 2002: Physics of Medical Imaging; (2002) https://doi.org/10.1117/12.465631
Event: Medical Imaging 2002, 2002, San Diego, California, United States

Abstract

4D-CT scanner is a high-speed cone-beam CT with good low- contrast detectability. In a single rotation, a voxel data set with higher spatial resolution over a wide z-axis can be obtained. Using continuous rotation, temporarily continuous voxel data sets and 3D dynamic images can be acquired. We have developed a 4D-CT prototype system using a large area 2D detector with high speed rotating gantry. The key technologies for 4D-CT scanner are a large area 2D detector, high-speed and continuous rotating gantry with high-speed data transfer. The full size 2D detector for prototype system has 912 channels, 256 detector rows for 0.5 mm slice thickness, and the sampling speed is 900 view/s. The rotation speed of the gantry is 1.0 s/rotation, and the speed of the data transfer system must be more than 5Gbps. The data transfer system consists of laser diode and photo diode. We have got real-time volume images of crayfish, moving jaw and breathing lung. We will start clinical research at next stage, and continue to improve the image quality.

Citation Download Citation

Yasuo Saito, Hiroshi Aradate, Hiroaki Miyazaki, Yoji Kudo, Kazuhiko Tsujita, Nobuhisa Shimadu, and Yuji Sawanaga "Development and evaluation of a real-time three-dimensional CT (4D-CT) scanner", Proc. SPIE 4682, Medical Imaging 2002: Physics of Medical Imaging, (3 May 2002); https://doi.org/10.1117/12.465631

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