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Journal of Medical Ultrasonics

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1991 - Vol.18

Vol.18 No.01

Original Article(原著)

(0093 - 0098)


Ultrasonographic Images of the Diaphragm and Respiratory Changes on Their Thickness

谷口 信行1, 3, 都田 潤一郎2, 伊東 紘一1, 福井 順一1, 中村 みちる1, 鈴木 修1

Nobuyuki TANIGUCHI1, 3, Junichiro MIYAKODA2, Kouichi ITOH1, Junichi FUKUI1, Michiru NAKAMURA1, Osamu SUZUKI1

1自治医科大学 臨床病理学教室, 2国立米子病院, 3国保名和診療所

1Department of Clinical Pathology, Jichi Medical School, 2Yonago National Hospital, 3Nawa Town Clinic

キーワード : Biometry, Diaphragm, Respiration, Thickness, Diagnostic ultrasound

We studied the structure and thickness of diaphragms by using an ultrasonic 7.5 MHz transducer. The diaphragms of healthy individuals and those with non-respiratory diseases had 5 layers: a pleural layer of high echo intensity, a muscle layer of low echo intensity, a connective tissue layer of high echo between two muscle layers, a muscle layer of low echo intensity, and a peritoneal layer of high echo intensity. Diaphragm thickness in the supine position was 2.0±0.5 mm (mean±SD, n=62) at resting exspiratory position, 4.3±1.1 mm (n=61) at maximal inspiratory position, and 1.8±0.4 mm (n=61) at maximal expiratory position. Values obtained from these three levels differed significantly from one another. Diaphragm thickness at resting expiratory position correlated with body weight and body height, but not with age.