■ CTAR (Cardio-Thorax Area Ratio) This measurement is for comparing the sizes of the fetus’ chest and heart. The comparison is made by obtaining the ThD ap, ThD trans, HrtD ap, and HrtD trans values.
■ CTAR (Cardio-Thorax Area Ratio)This measurement is for comparing the sizes of the fetus’ chest and heart. The comparison is made by obtaining the ThD ap, ThD trans, HrtD ap, and HrtD trans values.