Use of ultrasonography broadened to the field of obstetrics in the 1950s and has since expanded to many other medical special-ties owing to ease of use, reproducibility, low cost, and lack of radiation. 
THERM
Use of ultrasonography broadened to the field of obstetrics in the 1950s and has since expanded to many other medical special-ties owing to ease of use, reproducibility, low cost, and lack of radiation. 
THERM
Use of ultrasonography broadened to the field of obstetrics in the 1950s and has since expanded to many other medical special-ties owing to ease of use, reproducibility, low cost, and lack of radiation. 
THERM