[Technique of radiologic measurements for the inner ear structures using computed tomography].
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
; 44(7): 551-4, 2009 Jul.
Article
en Zh
| MEDLINE
| ID: mdl-19957651
OBJECTIVE: The aim of this study was to find an accurate and feasible measurement technique for the inner ear structures using computed tomography and to check the inter-observer agreement METHODS: Sixty patients without abnormal structure of temporal bones confirmed by means of high-resolution computed tomography were included in this study. The multi-planar reformations (MPR) were performed to show the maximum profile of cochlear, and to measure the height and width of cochlear. Areas of bony island encircled by three semicircular canals were measured on the MPR images that could show the whole canal. The data measured by two readers independently was compared to check the inter-observer agreement. RESULTS: The application of MPR yielded satisfactory anatomic presentation of inner ear for radiologic measurements. There was good inter-observer agreement revealed by the paired t-test and correlation analysis (P>0.05, r>0.9). The height of cochlear (x+/-s) was (4.26+/-0.28) mm while the width of cochlear was (7.03+/-0.39) mm. The areas of bony islands encircled by the anterior, posterior and lateral semicircular canals were (25.49+/-3.84) mm2, (20.07+/-2.93) mm2 and (11.50+/-1.94) mm2, respectively. CONCLUSIONS: MPR can display structures of cochlear and semicircular canals on planes along their central axis. Normative measurements on these MPR images derive excellent repeatability and provide reliable morphologic parameters of inner ear structures.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Tomografía Computarizada por Rayos X
/
Oído Interno
Tipo de estudio:
Evaluation_studies
Límite:
Adolescent
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Adult
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Aged
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Child
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Female
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Humans
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Male
/
Middle aged
Idioma:
Zh
Revista:
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Año:
2009
Tipo del documento:
Article
País de afiliación:
China
Pais de publicación:
China