Dynamic Three-Dimensional Echocardiography

概要

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Conventional three-dimensional(3D)ultrasound imaging equipment for diagnosis requires much time to reconstruct 3D images or fix the view point for observing the 3D image.Thus, it is inconvenient for cardiac diagnosis.In this paper, we propose a new dynamic 3D echocardiography system.The system produces 3D images in real-time and permits changes in view point. This system consists of ultrasound diagnostic equipment, a digitizer and a computer.B-mode images are projected to a virtual 3D space by referring to the position of the probe of the ultrasound diagnosis equipment.The position is obtained by the digitizer to which the ultrasound probe is attached.The 3D cardiac image is constructed from B-mode images obtained simultaneously in the cardiac cycle.To obtain the same moment of heartbeat in the cardiac cycle, this system uses the electrocardiography derived from the diagnosis equipment. The 3D images, which show various scenes of the stage of heartbeat action, are displayed sequentially.The doctor can observe 3D images cut in any plane by pushing a button of the digitizer and zooming with the keyboard.We evaluated our prototype system by observation of a mitral valve in motion.
社団法人応用物理学会の論文
2000-08-15