台灣未成年者之顳骨氣化發育狀況

The Pneumatization of Taiwanese Non-adult Temporal Bones

陳建志(Jiann-Jy Chen) ； 鄒永恩(Yung-An Tsou) ； 張馨丰(Hsin-Feng Chang) ； 陳登郎(Dem-Lion Chen)

《台灣耳鼻喉頭頸外科雜誌》 49卷4期 (2014/12) Pp. 197-203

https://doi.org/10.6286/2014.49.4.197

摘要

背景：若欲研究過去中耳炎及其併發症的可能盛行率，勢必瞭解顳骨氣房的發育狀況。本文以未成年人之腦部電腦斷層為題材，設法瞭解本國人實際的顳骨氣房發育狀況。方法：在2013年8月五2014年2月間，共計546名未滿20歲者（男327，女219）曾於中台灣某醫學中心接受腦部電腦斷層。把軸狀切面及冠狀切面設定為骨視窗（中心值400HU，窗幅值2,000HU）進行判讀。結果：在剛出生後0～6個月，整個顳骨內只有乳突竇，尚無氣房發育。乳突竇周圍的氣房發育最早始於7個月大。鱗狀部或乳突部出現氣房最早始於13個月大，岩尖部位出現氣房最早始於20個月大。整塊顳骨充滿氣房最早始於6歲。在3歲以前，氣房發育程度與成長月數呈現明顯的相關與迴歸；在4歲後，氣房發育程度與成長年齡呈現明顯的相關，卻無明顯的迴歸。結論：大體而言，在顳骨氣房的發育過程中，傾向於兩側封稱。期待本文結果，能有利於吾人了解顳骨內氣房的發育狀況，有助於中耳炎及其併發症的流行病學研究。

關鍵字

顳骨 ； 氣房發育 ； 腦部電腦斷層 ； 青春期 ； 乳突竇

並列摘要

BACKGROUND: To investigate the prevalence of otitis media and its complication, it is necessary to understand the air cellularity of temporal bone. In this study, we survey brain computed tomographies and try to understand the air cellularity of temporal bone in Taiwanese non-adults. METHODS: Between August 2013 and February 2014, 546 non-adult persons (＜ 20 years old), including 327 men and 219 women, received brain computed tomographies at a medical center in Mid-Taiwan. We reviewed each axial and coronal section under bone windows (center 400 HU, width 2,000 HU). RESULTS: The temporal bone has only mastoid antrum rather than any air cellularity at 0-6 months old. The earliest air cellular development around the mastoid antrum was noted at 7 months. The earliest air cellular development in the squamous or mastoid part was noted at 13 months; and, in the petrous apex, at 20 months. Temporal bone with fully-developed air cellularity could be noted as early as 6 years old. Before 3 years old, there are significant correlations and regressions between air cellularity and months of life; however, after 4 years old, there is a significant correlation rather than a significant regression between air cellularity and years of life. CONCLUSIONS: In general, the development of air cellularity of temporal bone tends to be symmetrical bilaterally. We hope the above results provide a thorough understand of the air cell cellularity development and a useful survey of the epidemiology of otits media and its complication.

並列關鍵字

temporal bone ； air cellularity ； brain CT ； adolescent ； mastoid antrum