Àá½Ã¸¸ ±â´Ù·Á ÁÖ¼¼¿ä. ·ÎµùÁßÀÔ´Ï´Ù.

³»À̵µ ±âÀúºÎ ½Å°æ°üµéÀÇ °íÇØ»ó ÃøµÎ°ñ CT ¼Ò°ß Nerve Canals at the Fundus of the Internal Auditory Canal on High-Resolution Temporal Bone CT

´ëÇѹæ»ç¼±ÀÇÇÐȸÁö 2001³â 45±Ç 6È£ p.565 ~ 570
¼Ò¼Ó »ó¼¼Á¤º¸
ÁöÁØÇÏ/Joon Ha Ji À±Àº°æ/±è½Âö/Eun Kyung Youn/Seung Chul Kim

Abstract

¸ñÀû:°íÇØ»óµµ ÃøµÎ°ñ CT¿¡¼­ °üÂûµÉ ¼ö ÀÖ´Â ³»À̵µ ±âÀúºÎ ½Å°æ°üµéÀÇ Á¤»ó ¼Ò°ßÀ» ¾Ë¾Æº¸
±â À§ÇØ º» ¿¬±¸¸¦ ½Ç½ÃÇÏ¿´´Ù.
´ë»ó°ú ¹æ¹ý:°ú°Å·Â»ó ¼ö¼úÀ̳ª ¿Ü»óÀÌ ¾øÀÌ ÃøµÎ°ñ CT¸¦ ½Ç½ÃÇÏ¿´´ø 150¸íÀÇ È¯ÀÚ¸¦ ´ë»óÀ¸
·Î,ÇÕº´ÁõÀÌ ¾ø´Â ÁßÀÌ¿° ȯÀÚ´Â Æ÷ÇÔ½ÃÅ°°í,Çö±âÁõ,°¨°¢½Å°æ¼º ³­Ã»,¾È¸é½Å°æ ¸¶ºñ°¡ ÀÖ´Â
ȯÀÚ´Â ´ë»ó¿¡¼­ Á¦¿Ü½ÃÄÑ ÃÑ 253°³ÀÇ °íÇØ»óµµ(1mm µÎ²²¿Í °£°ÝÀ¸·Î ¿¬¼Ó ÃÔ¿µÇÑ)ÃøµÎ°ñ
CT¸¦ ÈÄÇâÀûÀ¸·Î °üÂûÇÏ¿´´Ù.3¸íÀÇ ¹æ»ç¼±°ú Àǻ簡 ³»À̵µ ±âÀúºÎ¿¡¼­ ¾È¸é½Å°æÀÇ ¹Ì·ÎºÎ
ºÐÀý,¿Í¿ì½Å°æ,»óÀüÁ¤½Å°æ,ÇÏÀüÁ¤½Å°æÀÇ ±¸Çü³¶ ºÐÁö ¹× ÈÄÆØ´ëºÎ ½Å°æÀÌ Áö³ª°¡´Â ½Å°æ°üµé
ÀÌ °üÂûµÇ´Â ºóµµ¿Í À§Ä¡¸¦ È®ÀÎÇÏ¿´´Ù.
°á°ú:³»À̵µ ±âÀúºÎ¿¡¼­ ¸ðµÎ 5°³ÀÇ ½Å°æ°üµéÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù.ƯÀÌ°üÀ» Á¦¿ÜÇÑ 4°³ÀÇ ½Å
°æ°üµéÀº Ãà»ó¸é ¿µ»ó¿¡¼­ 100%°üÂûÀÌ °¡´ÉÇÏ¿´°í,ƯÀÌ°üÀº 68%¿¡¼­¸¸ °üÂûÀÌ °¡´ÉÇÏ¿´´Ù.
°ü»ó¸é ¿µ»ó¿¡¼­´Â ¾È¸é½Å°æ°üÀÇ ¹Ì·ÎºÎ ºÐÀý ½Å°æ°ü°ú »óÀüÁ¤½Å°æ°üÀº 100%È®ÀÎÀÌ °¡´ÉÇÏ
¿´Áö¸¸,¿Í¿ì½Å°æ°ü°ú ÇÏÀüÁ¤½Å°æÀÇ ±¸Çü³¶ ºÐÁö°ü ¹× ÈÄÆØ´ëºÎ ½Å°æ°üÀº °¢°¢ 90.1%,87.4%,
78%¿¡¼­¸¸ °üÂûÀÌ °¡´ÉÇÏ¿´´Ù.½Å°æ°üÀÌ °üÂûµÇ¾ú´ø °æ¿ìÀÇ Àü·Ê¿¡¼­ ¾È¸é½Å°æÀÇ ¹Ì·ÎºÎ ºÐ
Àý ½Å°æ°üÀº ±âÀúºÎÀÇ Àü»ó¹æ¿¡¼­ Àü¿Ü¹æÀ¸·Î ÇâÇÏ´Â °üÀ¸·Î °üÂûµÇ¾ú°í,¿Í¿ì½Å°æ°üÀº ±× Á÷
ÇϹ濡¼­ ¿Í¿ì¿Í ¿¬°áµÇ´Â °üÀ¸·Î º¸¿´À¸¸ç,»óÀüÁ¤½Å°æ°üÀº ÀÌ µÎ ½Å°æ°üµéÀÇ ¹Ù·Î µÚÂÊ¿¡¼­
ÀüÁ¤ÀÇ À­ºÎºÐÀ¸·Î ÇâÇÏ´Â °üÀ¸·Î¼­ °üÂûµÇ¾ú´Ù.ÇÏÀüÁ¤½Å°æÀÇ ±¸Çü³¶ ºÐÁö°üÀº »óÀüÁ¤½Å°æ°ü
ÀÇ ¹Ù·Î ÇϹ濡 À§Ä¡ÇÏ°í ÀÖ¾ú°í,ÈÄÆØ´ëºÎ ½Å°æÀÌ Áö³ª°¡´Â ƯÀÌ°üÀº ±¸Çü³¶ ºÐÁö°üÀÇ ÈÄÇϹæ
¿¡¼­ ¼öÆòÀ¸·Î ¶Ç´Â ÈÄÇϹæÀ¸·Î ÁÖÇàÇÏ´Â °ÍÀÌ °üÂûµÇ¾ú´Ù.
°á·Ð:°íÇØ»óµµ CT»ó ³»À̵µ ±âÀúºÎ¿¡ ÀÖ´Â 5°³ÀÇ ½Å°æ°üµéÀº ƯÀÌ°üÀ» Á¦¿ÜÇÏ°í´Â ¾ÆÁÖ ³ôÀº
ºóµµ·Î °üÂûÀÌ °¡´ÉÇϹǷÎ,À̵éÀÇ À§Ä¡¸¦ Á¤È®È÷ ÆľÇÇÏ¿© °ñÀý·Î ¿ÀÀÎÇÏÁö ¸»¾Æ¾ß Çϸç,¾ç
ÂÊÀ» ºñ±³ÇÏ¿© È®Àå µîÀÇ ÀÌ»ó¼Ò°ßÀ» º¸ÀÏ °æ¿ì À̸¦ ÀÎÁöÇÏ¿© MR µî Ãß°¡ °Ë»ç¸¦ ÇØ¾ß ÇÑ´Ù.

Purpose: To identify and evaluate the normal anatomy of nerve canals in the fundus of the internal auditory
canal which can be visualized on high-resolution temporal bone CT.
Materials and Methods: We retrospectively reviewed high-resolution (1 mm thickness and interval contiguous
scan) temporal bone CT images of 253 ears in 150 patients who had not suffered trauma or undergone surgery.
Those with a history of uncomplicated inflammatory disease were included, but those with symptoms of verti-go,
sensorineural hearing loss, or facial nerve palsy were excluded. Three radiologists determined the de-tectability
and location of canals for the labyrinthine segment of the facial, superior vestibular and cochlear
nerve, and the saccular branch and posterior ampullary nerve of the inferior vestibular nerve.
Results: Five bony canals in the fundus of the internal auditory canal were identified as nerve canals. Four
canals were identified on axial CT images in 100% of cases; the so-called singular canal was identified in only
68%. On coronal CT images, canals for the labyrinthine segment of the facial and superior vestibular nerve
were seen in 100% of cases, but those for the cochlear nerve, the saccular branch of the inferior vestibular
nerve, and the singular canal were seen in 90.1%, 87.4% and 78% of cases, respectively. In all detectable cas-es,
the canal for the labyrinthine segment of the facial nerve was revealed as one which traversed anterolater-ally,
from the anterosuperior portion of the fundus of the internal auditory canal. The canal for the cochlear
nerve was located just below that for the labyrinthine segment of the facial nerve, while that canal for the su-perior
vestibular nerve was seen at the posterior aspect of these two canals. The canal for the saccular branch
of the inferior vestibular nerve was located just below the canal for the superior vestibular nerve, and that for
the posterior ampullary nerve, the so-called singular canal, ran laterally or posteolaterally from the posteroin-ferior
aspect of the canal for the saccular branch.
Conclusion: Five bony nerve canals in the fundus of the internal auditory canal were detected by high-fre-quency
on high-resolution temporal bone CT. Familiarity with these structures can prevent confusion with, or
misinterpretation as, a fracture line, and further study such as MR imaging may be required when any en-largement
or erosion of these nerve canals is present.

Å°¿öµå

Ear; CT; Ear; anatomy; Temporal bone; CT;

¿ø¹® ¹× ¸µÅ©¾Æ¿ô Á¤º¸

µîÀçÀú³Î Á¤º¸

KoreaMed
KAMS