30 May 2001 Development of a fast ultrasonic three-dimensional imaging system for diagnosing blood vessels of artificial-kidney-dialyzed patients
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Abstract
It is very important to observe the vessels of the patient who are dialyzed artificially. An X-ray examination using contrast medium injected to the patient has been used for this purpose up to the present, but sometimes the examination has a risk of radiation damage. Therefore, we developed a safe and easy-to-use system in which 3D images of the vessels in the patients are reconstructed very quick from ultrasonic echoes. In this system, a view point for 3D rendering is set on the above position of the ultrasonic transducer, and a ray for the rendering is coincided with an ultrasonic beam. These features enable 3D images to be gradually reconstructed in real time while the echoes are being received. A magnetic position sensor system and a special 3D scanner which was developed were adopted for acquiring 3D echo data. In signal processing, intensity inversion technology is carried out before the 3D rendering process in order to detect and emphasize the vessels. With this system, we have acquired echo signals from the vessels in the arm of kidney dialyzed patients and made similar 3D images of X-ray angiography with the echoes in a short time such as 4 to 8 seconds.
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Mutsuhiro Akahane, Takashi Mochizuki, Yuko Yamashita, Chihiro Kasai, Masayuki Kobayashi, Osamu Kishino, Tomoya Ogawa, "Development of a fast ultrasonic three-dimensional imaging system for diagnosing blood vessels of artificial-kidney-dialyzed patients", Proc. SPIE 4325, Medical Imaging 2001: Ultrasonic Imaging and Signal Processing, (30 May 2001); doi: 10.1117/12.428218; https://doi.org/10.1117/12.428218
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