Acoustic output as measured by mechanical and thermal indices during routine obstetric ultrasound examinations.

@article{Sheiner2005AcousticOA,
  title={Acoustic output as measured by mechanical and thermal indices during routine obstetric ultrasound examinations.},
  author={Eyal Sheiner and Jody K Freeman and Jacques Sylvian Abramowicz},
  journal={Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine},
  year={2005},
  volume={24 12},
  pages={1665-70}
}
OBJECTIVE The purpose of this study was to quantify the acoustic output of clinical ultrasound instruments, as expressed by the thermal index (TI) and mechanical index (MI), during routine obstetric examinations. METHODS A prospective, observational study was conducted. Sonographers were unaware of the data being sought. Data were collected regarding duration of the examination and specific duration spent at each MI and TI. RESULTS A total of 11 first-trimester, 14 second-trimester, and 12… CONTINUE READING

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