There are multiple definitions:

1. ultrasonography(English)

   • role in screening of spinal dysraphism in infants at risk
   • ARM, CSD, LSS, OSD, SD, VACTERL
   • Ultrasound, Screening
   • https://doi.org…055-022-00722-2

2. urine-specific gravity(English)

   • HDM, TDF, TWI, WFF
   • Clinical chemistry, Water, Potassium, Sodium
   • https://doi.org…55/2022/9436186