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ACCURACY AND INTEROBSERVER- INTRAOBSERVER AGREEMENT IN THE RADIOLOGIC DIAGNOSIS OF AMELOBLASTOMA AND ODONTOGENIC KERATOCYST

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Abstract

º´¸®Á¶Á÷ÇÐÀûÀ¸·Î ¹ý¶û¸ð¼¼Æ÷Á¾°ú Ä¡¼º°¢È­³¶À¸·Î Áø´ÜµÈ Áõ·ÊÁß¿¡¼­ ¹æ»ç¼±ÇÐÀûÀ¸·Î ½±
°Ô Áø´ÜÇÒ ¼ö ¾ø¾ú´ø 13 ¿¹ÀÇ ¹ý¶û¸ð¼¼Æ÷Á¾°ú 8 ¿¹ÀÇ Ä¡¼º°¢È­³¶À» Æǵ¶ °æÇèÀÌ ´Ù¾çÇÑ 6¸í
ÀÇ Æǵ¶ÀÚ°¡ Æǵ¶ÇÑ ÈÄ¿¡ ±× °á°ú¸¦ ÀÌ¿ëÇÏ¿© Æǵ¶ÀÇ Á¤È®µµ, Æǵ¶ÀÚ°£ ÀÏÄ¡À², Æǵ¶ÀÚ³» ÀÏ
Ä¡À²À» ±¸ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. Æǵ¶ÀÚ 6ÀÎÀÇ Æǵ¶ÀÇ Á¤È®µµ´Â ÃÖ°í 0.81¿¡¼­ ÃÖÀú 0.48À̾úÀ¸¸ç Æò±Õ 0.61À̾ú´Ù.
2. ¹ý¶û¸ð¼¼Æ÷Á¾¿¡ ´ëÇÑ Æǵ¶ÀÇ Á¤È®µµ´Â 0.55·Î Ä¡¼º°¢È­³¶ÀÇ °æ¿ìÀÎ 0.70¿¡ ºñÇØ ¸Å¿ì
³·¾Ò´Ù.
3. ¸ðµç Æǵ¶ÀÚÀÇ Æǵ¶ÀÌ ÀÏÄ¡ÇÑ °æ¿ì´Â 1Â÷ Æǵ¶½Ã¿¡ 14.3%, 2Â÷ Æǵ¶½Ã¿¡ 19.0%·Î ¸Å¿ì
³·¾Ò´Ù.
4. 6ÀÎÀÇ Æǵ¶ÀÚ³» ÀÏÄ¡À²Àº kappa index -0.14 ¿¡¼­ 0.64±îÁö ¸Å¿ì ´Ù¾çÇÏ¿´À¸¸ç Àüü ÀÏ
Ä¡À²Àº 0.29·Î ¸Å¿ì ³·¾Ò´Ù.
5. ¹ý¶û¸ð¼¼Æ÷Á¾¿¡ ´ëÇÑ Æǵ¶ÀÚ³» ÀÏÄ¡À²Àº ka-ppa index -0.07¿¡¼­ 0.65, Ä¡¼º°¢È­³¶ÀÇ
°æ¿ì´Â -0.25¿¡¼­ 1.00À¸·Î ¸Å¿ì ´Ù¾çÇÏ¿´À¸¸ç Àüü ÀÏÄ¡À²Àº °¢°¢ 0.27, 0.26À¸·Î ¸Å¿ì À¯»ç
ÇÏ¿´´Ù.
6. Æǵ¶ÀÇ Á¤È®µµ¿Í Æǵ¶ÀÚ³» ÀÏÄ¡À²Àº ³ôÀº »ó°ü°ü°è¸¦ ³ªÅ¸³»¾ú´Ù (r=0.6370).
#ÃÊ·Ï#
six observers with different amount of experience in the field of Oral and Maxillofacial
Radiology interpreted the radiographs of 13 cases of ameloblastoma and 8 cases of
odontogenic keratocyct which were confirmed histopathologically and showed
pseudo-multilocular appearance and scalloped border radiographically. The authors
examined the accuracy of radiologic diagnoses, interobserver agrement and intraobserver
agreement.
The obtained results were as follows;
1. The accuracy of radiologic diagnosis ranged from 0.48 to 0.81. The average value
was 0.61.
2. The accuracy of radiologic diagnosis for ameloblastoma(0.55) was lower than that
for odontogenic keratocyst(0.70) (P<0.05).
3. The overall agreement among the 6 observers was 14.3% at the first interpretation
and 19.0% at the sescond interpretation.
4. The intraobserver agreement of each observer expressed in kappa index ranged
from -0.14 to 0.64. The overall intraobserver agreement was 0.29.
5. The intraobserver agreement of each observer for ameloblastoma and odontogenic
keratocyst ranged from -0.07 to 0.65 and from -0.25 to 1.00, respectively. The overall
intraobserver agreement for ameloblatoma and odontogenic keratocyst were 0.27 and
0.26, respectively.
6. The diagnostic accuracy highly correlated to the intraobserver agreement(r=0.6370).

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