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Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
Ç÷°ü ³» ÃÊÀ½ÆÄ ¿µ»ó¿¡¼ ³»° °æ°è¸é ÀÚµ¿ ºÐÇÒ |
¿µ¹®Á¦¸ñ(English Title) |
Automatic Identification of the Lumen Border in Intravascular Ultrasound Images |
ÀúÀÚ(Author) |
¹ÚÁØ¿À
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Jun-Oh Park
ByoungChul Ko
Hee-Jun Park
Jae-Yeal Nam
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¿ø¹®¼ö·Ïó(Citation) |
VOL 19-B NO. 03 PP. 0201 ~ 0208 (2012. 06) |
Çѱ۳»¿ë (Korean Abstract) |
Ç÷°ü ³» ÃÊÀ½ÆÄ ¿µ»ó(IVUS: Intravascular ultrasoundimages)¿¡¼ ³»°(Lumen) °æ°è ¿µ¿ªÀ» °ËÃâÇÏ´Â °ÍÀº ȯÀÚÀÇ ½ÉÇ÷°ü »óŸ¦ ÆľÇÇÏ´Â µ¥ Áß¿äÇÑ Á¤º¸¸¦ Á¦°øÇϸç, À̸¦ ÅëÇØ ½ÉÇ÷°ü°è ÁúȯÀ» ¿¹ÃøÇÏ°í Áø´ÜÇÒ ¼ö ÀÖ´Ù. µû¶ó¼ Á¤È®ÇÏ°Ô ³»° °æ°è¸¦ ºÐÇÒÇÏ´Â °ÍÀº ¸Å¿ì Áß¿äÇÑ ´Ü°èÀÌ´Ù. º» ³í¹®¿¡¼´Â ºñ¸ð¼öÀû È®·ü ¹Ðµµ ÇÔ¼ö¿Í ½º¹«µù ÇÔ¼ö¸¦ »ç¿ëÇÏ¿© ÀÚµ¿À¸·Î ³»° ¿µ¿ªÀ» ºÐÇÒÇÏ´Â ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. °¢°¢ÀÇ Ç÷°ü ³» ÃÊÀ½ÆÄ ¿µ»óµéÀ» ±ØÁÂÇ¥ À̹ÌÁö·Î º¯È¯ ÈÄ ¿þÀÌºí¸´ º¯È¯À» Àû¿ëÇÏ¿© Ãʱ⠰ü½É Á¡µéÀ» °ËÃâÇÑ´Ù. Ãʱ⠰ü½ÉÁ¡µé Áß¿¡¼ ÀâÀ½°ú Ä®½·¿¡ ÀÇÇØ ¹ß»ýµÈ Æ¢´Â Á¡µéÀ» Á¦°ÅÇϱâ À§ÇØ ºñ¸ð¼öÀû ¹Ðµµ ÇÔ¼ö¿Í ½º¹«µù ÇÔ¼ö¸¦ ÀÌ¿ëÇÏ¿© Æ¢´Â Á¡µéÀ» Á¦°ÅÇÏ°í °æ°è¸é¿¡ ÇØ´çÇÏ´Â Áß¿ä °ü½É Á¡ ¸¸À» ³²±ä´Ù. ¸¶Áö¸·À¸·Î, ´ÙÇ×°î¼± Á¢ÇÕ(Polynomial curve fitting) ÇÔ¼ö¸¦ Á¤ÀÇÇÏ°í ´ÙÇ׽İú ½ÇÁ¦ ³»° °æ°è¼±¿¡ Á¢ÇÕµÈ °ü½É Á¡À» ÀÌ¿ëÇÏ¿© ÀÚ¿¬½º·¯¿î ³»° °æ°è¸éÀ» ÃßÁ¤ÇÑ´Ù. º» ³í¹®¿¡¼ Á¦¾ÈÇÑ ¹æ¹ýÀ» ´Ù¾çÇÑ ÃÊÀ½ÆÄ ¿µ»ó¿¡ ´ëÇØ ½ÇÇèÇÑ °á°ú, ±âÁ¸¿¡ Á¦¾ÈµÈ ¹æ¹ý º¸´Ù Á¤È®ÇÏ°Ô °æ°è¸éÀ» °ËÃâÇÔÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.
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¿µ¹®³»¿ë (English Abstract) |
Accurately segmenting lumen border in intravascular ultrasound images (IVUS) is very important to study vascular wall architecture for diagnosis of the cardiovascular diseases. After each of IVUS image is transformed to a polar coordinated image, initial points are detected using wavelet transform. Then, lumen border is initialized as the set of important points using non parametric probability density function and smoothing function by removing outlier initial points occurred by noises and artifacts. Finally, polynomial curve fitting is applied to obtain real lumen border using filtered important points. The evaluation of proposed method was performed with related method and the proposed method produced accurate lumen contour detection when compared to another method in most types of IVUS images.
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Å°¿öµå(Keyword) |
Ç÷°ü ³» ÃÊÀ½ÆÄ ¿µ»ó
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½º¹«µù ÇÔ¼ö
´ÙÇ×°î¼± Á¢ÇÕ ÇÔ¼ö
IVUS
Wavelet Transform
Non Parametric Probability Density Function
Smoothing Function
Polynomial Curve Fitting
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