Normal Range for 4D Ultrasound Data at 23 Weeks
Aug 24, 2022
Source: Cainiu Health
Dr. Lv Aiming
Introduction
At 23 weeks of gestation, a 4D color Doppler ultrasound can clearly assess fetal development. General reference standards are as follows: fetal weight ≈ 420 g, crown-rump length ≈ 26 cm, biparietal diameter (BPD) = 5.80 ± 0.44 cm, and abdominal circumference (AC) = 17.90 ± 1.85 cm. However, these values may vary depending on the mother’s menstrual cycle; therefore, the reference ranges are not absolute. For personalized assessment, please follow your physician’s recommendations.
Clinical application of 4D medical ultrasound imaging technology provides richer imaging information for clinical ultrasound diagnosis, reduces missed diagnoses of lesions, and improves diagnostic accuracy. Particularly in obstetrics, it enables visualization of the fetus’s condition within the maternal uterus, facilitating early diagnosis of fetal developmental abnormalities and cardiovascular malformations. So, what are the normal reference ranges for 4D ultrasound measurements at 23 weeks’ gestation?
Normal Reference Ranges for 4D Ultrasound at 23 Weeks’ Gestation
At 23 weeks’ gestation, 4D color Doppler ultrasound can clearly assess fetal development. General reference standards include: fetal weight ≈ 420 g; crown-rump length (CRL) ≈ 26 cm; biparietal diameter (BPD) = 5.80 ± 0.44 cm; abdominal circumference (AC) = 17.90 ± 1.85 cm; and femur length (FL). Note that specific measurements may vary depending on the mother’s menstrual cycle; therefore, these reference values are not absolute, and clinical interpretation should always follow the physician’s professional judgment.
4D color Doppler ultrasound is a critically important examination throughout prenatal care. Physicians use this modality to evaluate the fetal head and face, spine, limbs, skeletal system, heart, and other structures to determine whether fetal development is proceeding normally. This examination is typically performed between 22 and 28 weeks’ gestation, with the optimal window being 23–24 weeks—when fetal size, amniotic fluid volume, and amniotic fluid clarity are most favorable for detailed imaging.
Due to individual variations in genetic background and maternal nutritional status, fetal size may differ by up to one week above or below the expected gestational age. In women with irregular menstrual cycles, discrepancies between ultrasound-derived fetal biometry and calculated gestational age may be even more pronounced. We hope this information has been helpful!
