الفهرس 
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Abstract
Both fetal macrosomia and intrauterine growth restriction increase the risk of perinatal mortality and morbidity, so it is important to have an accurate estimation of fetal weight. Radiological methods of fetal weight estimation include (2D &3D ultrasonography) and MRI.
Antenatal ultrasound used several equations for estimating fetal weight. Most of these equations even the commonly used ones have variable degrees of error.
Incorporation of fetal soft tissue parameters in fetal weight estimation can improve accuracy and reduce the degree of error these parameters are numerous and include mid-thigh soft tissue thickness, cheek to cheek diameter, fetal subscapular subcutaneous tissue thickness, humeral soft tissue thickness and the parameter included in our study (fetal abdominal subcutaneous tissue thickness).
A prospective observational study was conducted in the department of diagnostic radiology, Menoufia University Hospital, Egypt to assess the accuracy of fetal abdominal subcutaneous tissue thickness as an indicator of fetal birth weight after approval from faculty of medicine ethical committee,100 patients enrolled in the study according to inclusion criteria (Singleton pregnancy, gestational age between 37 and 42 weeks) and exclusion criteria (Multiple gestations, pregnant women who delivered after more than one week from the last fetal biometry and fetal congenital anomalies).
Patients were subjected to history taking, ultra-sonographic examination including (fetal biometric measures, fetal weight estimation and fetal abdominal subcutaneous tissue thickness measurement) and post-natal assessment. Data were collected, tabulated, statistically analyzed using a personal computer with SPSS 20.