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ÇѱÛÁ¦¸ñ(Korean Title) |
Á¶¿µÁõ° ÃÊÀ½ÆÄ Áø´Ü¿¡¼ È£Èí¿¡ ÀÇÇÑ ¿òÁ÷ÀÓ º¸Á¤ ±â¹ý |
¿µ¹®Á¦¸ñ(English Title) |
Respiratory Motion Correction in Contrast-Enhanced Ultrasonography |
ÀúÀÚ(Author) |
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SoJeong Park
Seung-Kang Lee
Ho-Joon Kim
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¿ø¹®¼ö·Ïó(Citation) |
VOL 40 NO. 03 PP. 0176 ~ 0181 (2013. 03) |
Çѱ۳»¿ë (Korean Abstract) |
º» ¿¬±¸¿¡¼´Â ÀÇ·á Áø´Ü ÃÊÀ½ÆÄ Áø´Ü°úÁ¤¿¡¼ È£ÈíÀ¸·Î ÀÎÇÑ Èçµé¸² Çö»óÀ» º¸Á¤ÇÏ´Â ROI ÃßÀû ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¶¿µÁõ° ÃÊÀ½ÆÄ Áø´Ü¿¡¼ Á¶¿µÈ¿°úÀÇ ÀüÀ̽ð£(transit time)Àº °£ ¼¶À¯È Á¤µµ¸¦ ÆǺ°ÇÏ´Â Áß¿äÇÑ ÆĶó¹ÌÅÍ·Î »ç¿ëµÈ´Ù. Á¶¿µÁõ° ÃÊÀ½ÆÄ µ¥ÀÌÅÍ¿¡¼ ³ªÅ¸³ª´Â ¸¶ÀÌÅ©·Î ¹öºí ÇüÅÂÀÇ ³ëÀÌÁî¿Í È£Èí¿¡ ÀÇÇÑ Èçµé¸² Çö»óÀº Çȼ¿´ÜÀ§ÀÇ ¿µ»ó󸮰úÁ¤À» ¾î·Æ°Ô ÇÒ »Ó¸¸ ¾Æ´Ï¶ó À¯»çµµ(similarity) Æò°¡¸¦ ±â¹ÝÀ¸·Î ÇÏ´Â ROI ÃßÀû °úÁ¤¿¡¼ ¼º´ÉÀúÇÏÀÇ ¿øÀÎÀÌ µÈ´Ù. À̸¦ À§ÇÏ¿© ÃÊÀ½ÆÄ Áø´Ü µ¥ÀÌÅÍ¿¡¼ Á¶¿µÁ¦ È®»êÈ¿°úÀÇ ÃøÁ¤ °î¼±À» 4°³ÀÇ ´Ü°è·Î ±¸ºÐÇÏ°í, ´Ü°èÀÇ Æ¯¼º°ú È£ÈíÁֱ⿡ µû¸¥ ¿òÁ÷ÀÓ¿¡ ´ëÇÑ ¸ð¸àÅÒ ¿ä¼Ò¸¦ °í·ÁÇÏ¿© µ¿Àû °¡ÁßÄ¡¸¦ Á¤ÀÇÇÏ¿´´Ù. Á¦¾ÈµÈ ¹æ¹ýÀÌ ÃÊÀ½ÆÄ Áø´Ü¿¡¼ È£Èí¿¡ ÀÇÇÑ Èçµé¸²À» º¸Á¤ÇÔÀ¸·Î½á °£ ¼¶À¯È Áø´Ü°úÁ¤¿¡¼ ½Å·Úµµ¸¦ Çâ»ó½Ãų ¼ö ÀÖÀ½À» ½ÇÇèÀ» ÅëÇÏ¿© °íÂûÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In this paper, we propose a ROI tracking method for correcting the respiratory motion in ultrasonography. The transit time of contrast-enhanced ultrasound is an important parameter to assess the stages of liver fibrosis in patients with liver disease. Respiratory motion and micro-bubble noise in the ultrasound data may bring some difficulties in pixel-based image processing and may be the cause of performance degradation in similarity-based ROI tracking processes. We have classified the time-intensity curve into four stages and defined the dynamic weights which reflect the momentum of the respiratory motion. Through the experiments, we have shown that the proposed method improves the reliability of the liver-fibrosis assessment process by compensating the respiratory motion in ultrasonography.
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Å°¿öµå(Keyword) |
Á¶¿µÁõ°ÃÊÀ½ÆÄ
È£Èí¿òÁ÷ÀÓ
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contrast-enhanced ultrasonography
respiratory motion
motion correction
timeintensity curve
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