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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) ¹«¸­ ÀÚ±â°ø¸í¿µ»ó¿¡¼­ Áö¿ªÀû È®·ü ¾ÆƲ¶ó½º Á¤·Ä ¹× ¹Ýº¹Àû ±×·¡ÇÁ ÄÆÀ» ÀÌ¿ëÇÑ Àü¹æ½ÊÀÚÀÎ´ë ºÐÇÒ
¿µ¹®Á¦¸ñ(English Title) Anterior Cruciate Ligament Segmentation in Knee MRI with Locally-aligned Probabilistic Atlas and Iterative Graph Cuts
ÀúÀÚ(Author) ÀÌÇÑ»ó   È«Çï·»   Han Sang Lee   Helen Hong  
¿ø¹®¼ö·Ïó(Citation) VOL 42 NO. 10 PP. 1222 ~ 1230 (2015. 10)
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(Korean Abstract)
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(English Abstract)
Segmentation of the anterior cruciate ligament (ACL) in knee MRI remains a challenging task due to its inhomogeneous signal intensity and low contrast with surrounding soft tissues. In this paper, we propose a multi-atlas-based segmentation of the ACL in knee MRI with locally-aligned probabilistic atlas (PA) in an iterative graph cuts framework. First, a novel PA generation method is proposed with global and local multi-atlas alignment by means of rigid registration. Second, with the generated PA, segmentation of the ACL is performed by maximum-aposteriori(MAP) estimation and then by graph cuts. Third, refinement of ACL segmentation is performed by improving shape prior through mask-based PA generation and iterative graph cuts. Experiments were performed with a Dice similarity coefficients of 75.0%, an average surface distance of 1.7 pixels, and a root mean squared distance of 2.7 pixels, which increased accuracy by 12.8%, 22.7%, and 22.9%, respectively, from the graph cuts with patient-specific shape constraints.
Å°¿öµå(Keyword) ¹«¸­ ÀÚ±â°ø¸í¿µ»ó   Àü¹æ½ÊÀÚÀδ렠 ¿µ»óºÐÇÒ   ´ÙÁß ¾ÆƲ¶ó½º ºÐÇÒ   knee MRI   anterior cruciate ligament   image segmentation   multi-atlas segmentation  
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