Real-time Virtual Sonography の
Real-time Virtual Sonography の
Real-time Virtual Sonography の
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CT<br />
<strong>Real</strong>-<strong>time</strong> <strong>Virtual</strong> <strong>Sonography</strong>XCT<br />
<br />
<br />
Ultrasound scanner is the imaging system for the anatomy of organs and the flow of blood vessels, by using reflected ultrasound<br />
signals. Because this method is noninvasive and convenient examination, hence it became very popular diagnosis method at<br />
the hospital and the private clinics. But, it is based on reflected ultrasound signals, so it is difficult to get the image of the<br />
organ through bones or gases in gastrointestinal tract. In addition, the ultrasound probe is manipulated by freehand during<br />
examination, so its cross section is less objective compared with other modality.<br />
We thought these issues should be improved, thus, we developed "<strong>Real</strong>-<strong>time</strong> <strong>Virtual</strong> <strong>Sonography</strong>". This newer system can<br />
display MPR (Multi-Planar Reconstruction) image, which indicates the same cross section as ultrasound image from CT volume<br />
data in real <strong>time</strong>. We believe that This is one of better ways to get more information which are contribute to diagnosis,<br />
by fusing together Ultrasound Imaging and CT imaging. Herein, we will describe about the background of development and the<br />
principle of our new technology, because other article will touch in the issue of clinical side.<br />
Key Words: Ultrasound, CT, <strong>Virtual</strong>, Fusion, <strong>Sonography</strong><br />
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1980<br />
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MEDIX VOL.40 31
CT<br />
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<strong>Real</strong>-<strong>time</strong> <strong>Virtual</strong> <strong>Sonography</strong>XCT<br />
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32 MEDIX VOL.40
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MEDIX VOL.40 33
TC<br />
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34 MEDIX VOL.40
<strong>Virtual</strong> <strong>Sonography</strong><br />
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3D<br />
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RFA<br />
CT<br />
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9<strong>Virtual</strong><br />
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8<br />
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<br />
1) James D. Fouley, and Andries Van Dam : "Fundamentals<br />
of Interactive Computer Graphics", Addison-<br />
Welsey Publishing Company, Inc. 253-274 , 1982.<br />
2) K. Oshio, and H. Shinmoto : "Simulation of US Imaging<br />
by Using a CT Data Set", 1996 Scientific Program of<br />
Radiological Society of North America, 517, 1996.<br />
3) N. Pagoulatos, D. R. Haynor, and Y. Kim : "Calibration<br />
and validation of free-hand 3D ultrasound systems<br />
based on DC magnetic tracking", in Proceedings of the<br />
SPIE, Vol. 3335, 59-71, 1998.<br />
2GHz4<br />
PC256 256<strong>Virtual</strong> <strong>Sonography</strong><br />
11/<br />
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<strong>Virtual</strong> <strong>Sonography</strong><br />
CT<br />
<br />
MEDIX VOL.40 35
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