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논문 기본 정보

자료유형
학술저널
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대한이비인후과학회 Clinical and Experimental Otorhinolaryngology Clinical and Experimental Otorhinolaryngology 제1권 제3호
발행연도
2008.1
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139 - 142 (4page)

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Objectives. The goals of the study were to compare the middle ear (ME) volumes from both normal and lesioned ears, and these ME volumes were measured by a digital image processing computed tomography (CT) program in patients with unilateral chronic otitis media, and we wanted to compare the ME volumes of the lesioned ears by comparing the ME volumes obtained by tympanometry with those ME volumes measured by the digital image processing CT program. Methods. Forty-four patients who had unilateral chronic otitis media (COM) and contralateral normal tympanic membranes (TM) and 100 subjects with normal TMs were included in the study. The normal volumes of the external auditory canal (EAC) were measured in the normal group. The tympanometric ME volumes in the ears with a perforated TM were calculated as the difference of the tympanometric volumes measured from the both ears in patients with unilateral COM. The CT ME volumes were measured by a digital image processing program. Results. The tympanometric volumes of the EACs in the ears with normal TMs were 1.4±0.3 mL. There were no significant differences according to gender, age and the side of the face the ear was on. The tympanometric volumes of the EAC in the normal-side ear of the patients with unilateral COM showed no significant differences when compared with those from the normal group. The ME volumes of the intact ears, as measured by CT, showed significantly higher values than those ME volumes of the lesioned ears. The ME volumes of the lesioned ears, as measured by tympanometry, showed a strong, significant linear correlation with those ME volumes calculated by CT; however, the ME volumes of the lesioned ears, as measured by tympanometry (1.5±1.4 mL), were significantly larger than those ME volumes measured by CT (1.1±0.8 mL). Conclusion. Our results show that chronic otitis media causes reduced ME volumes compared to those ME volumes of the contralateral normal ears. Tympanometry can provide a valuable estimation of the ME volumes in chronic ears, although it tends to overestimate the ME volumes, and especially for the ears with a larger ME volume.
#Mastoid #Tomography #Imaging #Three-dimensional #Acoustic impedance tests

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참고문헌 (10)

참고문헌 신청
Aktas D / 2000 / The relationship between traumatic tympanic membrane perforations and pneumatization of the mastoid / ORL J Otorhinolaryngol Relat Spec 62 (6) : 311 ~ 315 google schola Koc A / 2003 / Evaluation of the mastoid air cell system by high resolution computed tomography: three-dimensional multiplanar volume rendering technique / J aryngol Otol 117 google schola Lee DH / 2005 / Volume variation of mastoid pneumatization in different age groups: a study by three-dimensional reconstruction based on computed tomography images / Surg Rad google schola Lindeman P / 1981 / Measurement of middle ear volume using the impedance audiometer / Am J Otol 2 (4) : 301 ~ 303 google schola Mehta RP / 2006 / Determinants of hearing loss in perforations of the tympanic membrane / Otol Neurotol 27 (2) : 43 ~ 136 google schola

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