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Abstract Title:

Ultrasound-induced temperature increase in guinea-pig fetal brain in utero: third-trimester gestation.

Abstract Source:

Ultrasound Med Biol. 1998 Nov;24(9):1501-10. PMID: 10385971

Abstract Author(s):

M M Horder, S B Barnett, G J Vella, M J Edwards, A K Wood

Article Affiliation:

Department of Veterinary Clinical Sciences, University of Sydney, NSW Australia.

Abstract:

Temperature increase was measured at various depths in the brain of living fetal guinea pigs during in utero exposure to unscanned pulsed ultrasound at ISPTA 2.8 W/cm2. Mean temperature increases of 4.9 degrees C close to parietal bone and 1.2 degrees C in the midbrain were recorded after 2-min exposures. When exposures were repeated on the same sites in each fetus after death, the corresponding mean temperature increases were 4.9 degrees C and 1.3 degrees C, respectively. Cerebral blood perfusion had little cooling effect on ultrasound-induced heating in the guinea pig fetus of 57-61 days gestational age.

Study Type : Animal Study
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Sayer Ji
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