Online Journal
IF値: 1.878(2021年)→1.8(2022年)


Journal of Medical Ultrasonics

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1993 - Vol.20

Vol.20 No.06

Original Article(原著)

(0349 - 0355)

Absorption of Ultrasound by Normal and Pathological Human Gonadal Tissues in vitro

Hiroshi INOUE2, Kay I. CARNES1, Floyd DUNN1

1Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois, 2Department of Electrical and Electronic Engineering, Mining College, Akita University

キーワード : Ultrasonic absorption, Gonads, Cancer

The transient thermoelectric method was employed to determine the ultrasonic absorption coefficient α of normal and pathological excised human ovary and testis at 1 and 3.25 MHz. At 1 MHz, α of normal ovary ranged from 0.016 for follicle to 0.046 Np/cm for the tunica albuginea, while the studied pathologies ranged from 0.02 to 0.123 Np/cm. The α increased from 0.018 Np/cm for normal testis from 0.024 to 0.048 Np/cm for the pathological organs studied. The observed changes in the absorption coefficient, of the pathologies from normal, are consistent with the attending changes in water and protein content. The frequency dependence for testis is f1.4 and increases with the studied pathologies, while that for ovary is f1.6 and decreases with the studied pathologies.