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The Accuracy of Sonoelastography in a Fatty Degeneration of Supraspinatus: A Comparison with Magnetic Resonance Images through Quantitative Assessment
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¼Áß¹è(Seo Joong-Bae) - ´Ü±¹´ëÇб³ Àǰú´ëÇÐ Á¤Çü¿Ü°úÇб³½Ç
À¯À缺(Yoo Jae-Sung) - ´Ü±¹´ëÇб³ Àǰú´ëÇÐ Á¤Çü¿Ü°úÇб³½Ç
·ùÁö¿ø(Ryu Jee-Won) - ´Ü±¹´ëÇб³ Àǰú´ëÇÐ Á¤Çü¿Ü°úÇб³½Ç
Abstract
¸ñ Àû: º» ¿¬±¸ÀÇ ¸ñÀûÀº ÀÚ±â°ø¸í¿µ»óÀ» ±âÁØÀ¸·Î ±Ø»ó±ÙÀÇ Áö¹æº¯¼ºÀ» Æò°¡ÇÔ¿¡ ÀÖ¾î ź¼ºÃÊÀ½ÆÄÀÇ Á¤È®µµ¿¡ ´ëÇØ ¾Ë¾Æº¸°íÀÚ ÇÑ´Ù.
´ë»ó ¹× ¹æ¹ý: °ß°üÀý ÀÚ±â°ø¸í¿µ»ó°ú ź¼ºÃÊÀ½ÆÄ¸¦ ½ÃÇàÇÏ¿´´ø 126¸í(131¿¹)ÀÇ °ß°üÀýÀ» ´ë»óÀ¸·Î ÈÄÇâÀû ºÐ¼®À» ÇÏ¿´´Ù. ź¼ºÃÊÀ½ÆÄ¸¦ ÀÌ¿ëÇØ ±Ø»ó±ÙÀÇ »çÀ§ ½Ã»ó¸é ¿µ»óÀ» ¾ò¾úÀ¸¸ç, ź¼ºÃÊÀ½ÆÄ ¿µ»óÀº 256´Ü°èÀÇ »öÁ¶Áöµµ¿µ»óÀ» ÀÌ¿ëÇØ µÎ ¸íÀÇ Á¤Çü¿Ü°úÀǻ翡 ÀÇÇØ Æò°¡µÇ¾ú´Ù.
°á °ú: ±Ø»ó±ÙÀÇ Áö¹æº¯¼ºÀ» ÀÚ±â°ø¸í¿µ»óÀ» ±âÁØÀ¸·Î ÇßÀ» ¶§, ź¼ºÃÊÀ½ÆÄÀÇ ¹Î°¨µµ´Â 89.47%, ƯÀ̵µ 92.85%, Á¤È®µµ 91.60%¿´´Ù. ź¼ºÃÊÀ½ÆÄ¿µ»óÀÇ °üÂûÀÚ °£ ÀÏÄ¡µµ´Â almost perfect agreement·Î weighted kappa coefficient´Â 0.81À̾ú´Ù. ÀÚ±â°ø¸í¿µ»ó°ú ź¼ºÃÊÀ½ÆÄÀÇ µî±ÞÀº ¾çÀÇ »ó°ü°ü°è(r=0.85, p¡Â0.001)¸¦ º¸¿´´Ù. Occupation ratio¿Í blue region area ratio ¿ª½Ã ¾çÀÇ »ó°ü°ü°è(r=0.69, p¡Â0.001)¸¦ º¸¿´´Ù.
°á ·Ð: ź¼ºÃÊÀ½ÆÄ´Â ±Ø»ó±ÙÀÇ Áö¹æº¯¼ºÁ¤µµÀÇ Á¤·®Àû Æò°¡¿¡¼ ³ôÀº Á¤È®µµ¿Í ÀÚ±â°ø¸í¿µ»ó°úÀÇ ÀÏÄ¡µµ, °üÂûÀÚ °£ ÀÏÄ¡µµ¸¦ º¸¿© ±Ø»ó±ÙÀÇ Áö¹æº¯¼º Æò°¡¿¡ À¯¿ëÇÑ ¹æ¹ýÀÌ µÉ ¼ö ÀÖÀ» °ÍÀÌ´Ù.
Purpose: Using magnetic resonance imaging (MRI) as the standard of reference, the purpose of this study was to evaluate the accuracy of sonoelastography (SE) for assessment of fatty degeneration of suprasupinatus (SSP).
Materials and Methods: A retrospective analysis was conducted in 131 shoulders of 126 consecutive patients who underwent shoulder MRI, and SE. Oblique sagittal images of SSP were obtained using SE; the SE images were evaluated by two orthopedic surgeons using a 256 degree color map image.
Results: When the supraspinatus fatty degenerations were based on MRI findings, the sensitivity of SE was 89.47%, specificity 92.85%, and accuracy 91.60%. The interobserver reliability of the SE findings was ¡¯almost perfect agreement¡¯ with a weighted kappa coefficient of 0.81. By comparison of MRI with the SE findings, the grades of MRI and SE showed positive correlation (r=0.85, p¡Â0.001). In addition, the occupation ratio and blue region area ratio also showed positive correlation (r=0.69, p¡Â0.001).
Conclusion: SE is valuable in quantitative assessment of the severity of fatty atrophy of the supraspinatus and has excellent accuracy, excellent correlation with MRI and conventional ultrasonography, and excellent interobserver reliability.
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±Ø»ó±Ù, Áö¹æº¯¼º, ÃÊÀ½ÆÄ, ź¼ºÃÊÀ½ÆÄ
supraspinatus, fatty degeneration, ultrasonography, sonoelastography
KMID :
0361620140490030223
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