가상 유양동삭개술 모델에서 유양동 기체 생리의 변화

정대한; 정훈; 류은웅; 박철언; 변재용; 여승근; 박문서

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자료유형: 학술저널

저자정보: 정대한 정훈 류은웅 박철언 변재용 여승근 박문서

저널정보: 대한이비인후과학회 대한이비인후-두경부외과학회지 대한이비인후과학회지 두경부외과학 제53권 제5호

발행연도: 2010.1

수록면: 284 - 289 (6page)

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연구주제

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연구배경

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연구방법

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연구결과

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Background and ObjectivesZZIt is essential to understand gas physiology of mastoid cavity to study the pathophysiology of middle ear diseases, and the surface area and volume of mastoid mucosa are important parameters for evaluating gas physiology. However, the surface area and mastoid volume of the mastoid cavity have not been practically measured yet. Therefore, we measured and compared surface area and volume of the mastoid cavity before and after mastoidectomy using a virtual mastoidectomy model. Subjects and MethodZZWe performed a virtual mastoidectomy using 10 cases of temporal bone CT indicating pneumatic mastoid. First, we removed all air cells after outlining with irregular AOI function after loading axial CT images to Image-Pro Plus 4.0. Then we filled the removed area with equal planes using local equalization filter. Finally, we calculated and compared the total surface area, volume and area to volume (A/V) ratio by estimating their circumference and area. ResultsZZThe mean surface area of pneumatized mastoid cavity was 127.8 cm2 (range: 94.2-165.3 cm2), and the mean volume was 7.1 cm3 (range: 5.2-11.0 cm3). The mean surface area and volume were altered to 42.8 cm2 (range: 35.9-55.0 cm2) and 12.6 cm3 (range: 10.3-18.7cm3), respectively, after virtual mastoidectomy. As a result, the A/V ratio decreased from 18 to 3.4 after a virtual mastoidectomy in the pneumatic mastoid cavity. ConclusionZZWhen a complete mastoidectomy is performed in the pneumatic mastoid, the surface area is decreased by one third compared to a relatively minor increase in volume. Therefore,the surface area per unit volume is expected to greatly decrease after mastoidectomy. Some physiologic problems occurring after mastoidectomy could be more accurately explained using a virtual mastoidectomy model. Korean J Otorhinolaryngol-Head Neck Surg 2010;53:284-9

#Mastoid·Mastoidectomy·Surface area·Volume.

참고문헌 (14)

참고문헌 신청

Ars B / 1997 / Histomorphometric study of the normal middle ear mucosa. Preliminary results supporting the gas-exchange function in the postero-superior part of the middle e

Austin DF / 1977 / On the function of the mastoid / Otolaryngol Clin North Am 10 (3) : 541 ~ 547

Colhoun EN / 1988 / A comparison between area and volume measurement of the mastoid air spaces in normal temporal bones / Clin Otolaryngol Allied Sci 13 (1) : 59 ~ 63

Doyle WJ / 2003 / Rate of nitrous oxide exchange across the middle ear mucosa in monkey before and after blockage of the mastoid antrum / Otolaryngol Head Neck Surg 128 (5)

Frisberg K / 1965 / The size of mastoid air cell system. Planim etry--direct volume determination / Acta Otolaryngol 60 : 23 ~ 29

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