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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö > Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö B

Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö B

Current Result Document : 2 / 2 ÀÌÀü°Ç ÀÌÀü°Ç

ÇѱÛÁ¦¸ñ(Korean Title) K-Æò±Õ Ŭ·¯½ºÅ͸µ°ú ±×·¡ÇÁ Ž»öÀ» ÅëÇÑ ½ÉÀå ÀÚ±â°ø¸í¿µ»óÀÇ ÁÂ½É½Ç ÀÚµ¿ºÐÇÒ ¾Ë°í¸®Áò
¿µ¹®Á¦¸ñ(English Title) Automatic Left Ventricle Segmentation Algorithm using K-mean Clustering and Graph Searching on Cardiac MRI
ÀúÀÚ(Author) Á¶Çö¿ì   ÀÌÇØ¿¬   Hyun-Wu Jo   Hae-Yeoun Lee  
¿ø¹®¼ö·Ïó(Citation) VOL 18-B NO. 02 PP. 0057 ~ 0066 (2011. 04)
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(Korean Abstract)
½ÉÀå ÁúȯÀ» ¿¹¹æÇϱâ À§Çؼ­´Â Á¤±âÀûÀÎ °ËÁøÀ» ÅëÇØ ½ÉÀå ±â´ÉÀ» ºÐ¼®ÇÏ°í °üÂûÇÏ´Â °ÍÀÌ Áß¿äÇÏ´Ù. Á¤±âÀûÀÎ °ËÁø¿¡¼­ ½ÉÀå ±â´ÉÀº ½ÉÀåÀ» ÃÔ¿µÇÑ ÈÄ¿¡ °üÃøÀÚ°¡ À̸¦ ¼öÀÛ¾÷À» ÅëÇÏ¿© ó¸®ÇÏ¿© Ç÷·ù·®°ú ½É¹Ú±¸Ãâ·ü µîÀ» ºÐ¼®ÇÔÀ¸·Î¼­ ÀÌ·ç¾îÁö³ª, ½Ã°£µµ ¿À·¡ °É¸®¸ç °üÃøÀÚ¿¡ µû¸¥ º¯À̼ºÀÌ ¹®Á¦°¡ µÈ´Ù. º» ³í¹®¿¡¼­´Â ½ÉÀå ´ÜÃà ÀÚ±â°ø¸í¿µ»ó¿¡¼­ ÁÂ½É½Ç ¿µ¿ªÀ» ºÐÇÒÇÏ´Â ÀÚµ¿È­µÈ ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÑ´Ù. ÄÚÀÏ À§Ä¡¿¡ µû¸¥ ¿Ö°îÀ» º¸Á¤ÇÏ°í, K-Æò±Õ Ŭ·¯½ºÅ͸µ ±â¹ýÀ» ÀÌ¿ëÇÏ¿© ÁÂ½É½Ç ³»ºÎ¸¦ ºÐÇÒÇÑ´Ù. ¿µ»óÀÇ ¿Ö°î ¹× ÀâÀ½¿¡ ÀÇÇÏ¿© ¹ß»ýÇÏ´Â ºÐÇÒ ¿À·ù´Â ±×·¡ÇÁ Ž»ö ±â¹ýÀ» Àû¿ëÇÏ¿© ¼öÁ¤ÇÏ¿´´Ù. Á¦¾ÈÇÏ´Â ¾Ë°í¸®ÁòÀÇ ¼º´ÉÀ» Æò°¡Çϱâ À§ÇÏ¿© 38¸íÀÇ Áö¿øÀÚ ±×·ì¿¡ ´ëÇÏ¿© Ç÷·ù·®°ú ½É¹Ú±¸Ãâ·üÀ» °è»êÇÏ¿´°í, Àü¹®°¡¿¡ ÀÇÇÑ ¼öµ¿À±°û°ËÃâ °á°ú¿Í GE MASS ¼ÒÇÁÆ®¿þ¾î¿Í ºñ±³ÇÏ¿´´Ù. °á°ú¿¡ µû¸£¸é Á¦¾ÈÇÑ ¾Ë°í¸®ÁòÀÇ ¼öµ¿À±°û°ËÃâ°ú Ç÷·ù·®ÀÇ Â÷ÀÌ´Â Æò±ÕÀûÀ¸·Î À̿ϱ⿡ 6.2mL¡¾5.6 ¹× ¼öÃà±â¿¡ 2.9mL¡¾3.0, ½É¹Ú±¸Ãâ·üÀÇ Â÷ÀÌ´Â 2.1%¡¾1.5·Î ³ôÀº Á¤È®¼ºÀ» º¸¿´´Ù. ƯÈ÷ Á¦¾ÈÇÑ ¾Ë°í¸®ÁòÀº ±âÁ¸ ¾Ë°í¸®Áò¿¡¼­ ¹ß»ýÇÏ´ø »ç¿ëÀÚ °£¼··üÀ» ÃÖ¼ÒÈ­ÇÏ¿© ÀÚµ¿È­ ¼º´ÉÀ» Çâ»óÇÏ¿´´Ù.

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(English Abstract)
To prevent cardiac diseases, quantifying cardiac function is important in routine clinical practice by analyzing blood volume and ejection fraction. These works have been manually performed and hence it requires computational costs and varies depending on the operator. In this paper, an automatic left ventricle segmentation algorithm is presented to segment left ventricle on cardiac magnetic resonance images. After coil sensitivity of MRI images is compensated, a K-mean clustering scheme is applied to segment blood area. A graph searching scheme is employed to correct the segmentation error from coil distortions and noises. Using cardiac MRI images from 38 subjects, the presented algorithm is performed to calculate blood volume and ejection fraction and compared with those of manual contouring by experts and GE MASS software. Based on the results, the presented algorithm achieves the average accuracy of 6.2mL¡¾5.6, 2.9mL¡¾3.0 and 2.1%¡¾1.5 in diastolic phase, systolic phase and ejection fraction, respectively. Moreover, the presented algorithm minimizes user intervention rates which was critical to automatize algorithms in previous researches.
Å°¿öµå(Keyword) ½ÉÀåºÐÇÒ   K-Æò±Õ Ŭ·¯½ºÅ͸µ   ±×·¡ÇÁ Ž»ö   ÀÚ±â°ø¸í¿µ»ó   Cardiac Segmentation   K-mean clustering   Graph Searching   Magnetic Resonance Imaging  
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