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A compilation of reports of biological effects and related ultrasound exposure levels can be useful in the identification of trends in effects data that may be developing in the literature. The exposures in the experiments reviewed were at frequencies used in medicine. For short (10 minutes or...
The celiac axis could be visualized with ultrasound in 140 out of 166 cases (84%). Failure to identify the celiac axis was associated with extensive metastases to the celiac lymph nodes in 73% (19/26) of these cases. The location of lymph nodes in this region could be determined using the celiac...
Doppler blood velocity waveforms were analyzed from the umbilical artery as an indication of fetal well‐being. Since the ratio of systolic to diastolic peak flows (A/B) reflects placental vascular resistance, an abnormality of this value may accurately predict compromised fetuses. Twenty‐one...
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