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Article: Liquid flow has a cooling effect on ultrasound-induced heating in study models.
- Article from:
- Medical Devices & Surgical Technology Week
- Article date:
- October 19, 2003
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2003 OCT 19 - (NewsRx.com & NewsRx.net) -- Liquid flow has a cooling effect on ultrasound-induced heating in study models.
"There is a need to investigate the thermal effects of diagnostic ultrasound (US) to assist the development of appropriate safety guidelines for obstetric use. The cooling effect of a single liquid How channel was measured in a model of human fetal brain and skull bone heated by a focused beam of simulated pulsed spectral Doppler US," researchers in Australia reported.
"Insonation conditions were 5,7 micros pulses, repeated at 8 kHz from a focused transducer operating with a center frequency of 3.5 MHz, producing a beam of -6 dB ...