If you have a thick abdominal wall in mid-pregnancy and are unable to have a 4D, you can have an MRI to evaluate the development of the fetus and to see if there are any abnormalities. Fetal MRI can be performed in sagittal, coronal, and transverse axial views of the developing fetus, and is not affected by the thickness of the abdominal wall. Fetal MRI is usually performed after 20 weeks of gestation. Due to the individual differences in the fetus and placenta, there is no standardized scanning baseline and frequency direction. There is no standardized scanning baseline and frequency direction, so the scanning can be reasonably positioned according to the part of the fetus that needs to be observed, and it can clearly show small fetal structures and malformations, such as the fetal central nervous system, heart, chest, gastrointestinal tract, kidneys, and bones. Although a thick abdominal wall in mid-pregnancy can be assessed by fetal MRI for fetal malformations, it is also important for proper diet and weight management during pregnancy. If the abdominal fat is too thick during pregnancy, you need to consult the nutrition department of the hospital in time, and under the guidance of the nutritionist, you should have a reasonable diet, appropriate exercise, weight control, and prevention of pregnancy comorbidities.