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Accuracy of Automatic Cephalometric Analysis Programs on Lateral Cephalograms of Preadolescent Children

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¼Û¹Î¼± ( Song Min-Sun ) - Yonsei University College of Dentistry Department of Pediatric Dentistry
±è¼º¿À ( Kim Seong-Oh ) - Yonsei University College of Dentistry Department of Pediatric Dentistry
±èÀÍȯ ( Kim Ik-Hwan ) - Yonsei University College of Dentistry Department of Pediatric Dentistry
°­Á¤¹Î ( Kang Chung-Min ) - Yonsei University College of Dentistry Department of Pediatric Dentistry
¼ÛÁ¦¼± ( Song Je-Seon ) - Yonsei University College of Dentistry Department of Pediatric Dentistry

Abstract

ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº ¼Ò¾Æ ȯÀÚµéÀÇ Ãø¸ð¹æ»ç¼± »çÁøÀ» ´ë»óÀ¸·Î ½ÃÆǵǴ 3Á¾ÀÇ ÀÚµ¿ °èÃøÁ¡ ½Äº° ÇÁ·Î±×·¥ÀÇ Á¤È®¼ºÀ» Æò°¡ÇÏ°í ¼Ò ¾ÆÄ¡°ú ÀÓ»ó¿¡¼­ÀÇ »ç¿ë °¡´É¼ºÀ» ¿¹ÃøÇÏ´Â °ÍÀÌ´Ù. ¿µ±¸ ÁßÀýÄ¡°¡ ¸ÍÃâÇÑ ¸¸ 7 - 12¼¼ °Ç°­ÇÑ ¾î¸°ÀÌ 60¸íÀÇ Ãø¸ð¹æ»ç¼± »çÁø¿¡ 14°³ÀÇ °èÃøÁ¡À» Ç¥½ÃÇÏ¿´´Ù. 1¸íÀÇ °Ë»çÀÚ°¡ 3ȸ ¹Ýº¹ ÃøÁ¤ÇÑ °á°úÀÇ Æò±ÕÀ» ±âÁØÁ¡À¸·Î Á¤ÀÇÇÏ¿© ÀÚµ¿À¸·Î ½Äº°µÈ °èÃøÁ¡°úÀÇ °Å¸® Â÷À̸¦ °èÃøÇÏ¿´´Ù. 3Á¾ÀÇ ÀÚµ¿ °èÃøÁ¡ ½Äº° ÇÁ·Î±×·¥Àº Æò±Õ 2.53 mmÀÇ ¿ÀÂ÷¸¦ ³ªÅ¸³Â´Ù. Orbitale°ú GonionÀ» Á¦¿ÜÇÑ 12°³ÀÇ °èÃøÁ¡¿¡¼­ 3Á¾ÀÇ ÇÁ·Î ±×·¥ »çÀÌ¿¡ À¯ÀǹÌÇÑ Â÷ÀÌ´Â ¾ø¾úÀ¸³ª, °Ë»çÀÚ°¡ ¸ðµç °èÃøÁ¡¿¡¼­ 3Á¾ÀÇ ÇÁ·Î±×·¥º¸´Ù À¯ÀǹÌÇÏ°Ô ³ôÀº Á¤È®µµ¸¦ º¸¿´´Ù. ÀÌ ¿¬±¸¸¦ ÅëÇÏ¿© »çÃá±â Àü ¼Ò¾ÆÀÇ Ãø¸ð¹æ»ç¼± ºÐ¼® ½Ã ÀÚµ¿ °èÃøÁ¡ ½Äº° ÇÁ·Î±×·¥ÀÌ °Ë»çÀÚ¸¦ ´ëüÇÒ Á¤µµ´Â ¾Æ´Ï³ª ªÀº ¼Ò¿ä½Ã°£°ú ÀÓ»ó Çã ¿ë °¡´ÉÇÑ ¹üÀ§ À̳»ÀÇ Á¤È®µµ¸¦ °®´Â È¿°úÀûÀÎ Áø´Ü º¸Á¶±â±¸ÀÓÀ» ¾Ë ¼ö ÀÖ´Ù.

The aim of this study was to evaluate the accuracy of 3 different automatic landmark identification programs on lateral cephalgrams and the clinical acceptability in pediatric dentistry. Sixty digital cephalometric radiographs of 7 to 12 years old healthy children were randomly selected. Fourteen landmarks were chosen for assessment and the mean of 3 measurements of each landmark by a single examiner was defined as the baseline landmarks. The mean difference between an automatically identified landmark and the baseline landmark was measured for each landmark on each image. The total mean difference of 3 automatic programs compared to the baseline landmarks were 2.53 ¡¾ 1.63 mm. Errors among 3 programs were not significantly different for 12 of 14 landmarks except Orbitale and Gonion. The automatic landmark identification programs showed significant higher mean detection errors than the manual method. The programs couldn¡¯t be used as the 1st tool to replace human examiners. But considering short consuming time, these results indicate that all 3 programs have sufficient validity to be used in pediatric dental clinic.

Å°¿öµå

Automatic identification; Landmark; Accuracy; Cephalometric analysis; Preadolescent children

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