The fetal head. The standard axial fetal brain planes include the biparietal diameter, the transventricular plane and the cerebellar plane (Figures 1–3). Many of the fetal measurements are taken from these planes including the BPD and HC. Measurements of the Cerebellum, Cisterna Magna and Nuchal fold can be useful.

2024年8月21日 · Head ultrasound has the advantages of: accessibility. mobility, i.e. bedside scanning at the NICU and neonatal ward. requiring no sedation. enabling serial scans, e.g. for assessing brain maturation and/or lesion evolution. no ionizing radiation. Doppler ultrasound may also be used to visualize anterior and middle cerebral arteries 5,6 ...

2023年5月22日 · There are specific indications for using ultrasound in each trimester and assessing both the fetus and the mother by ultrasonography. Based on maternal and fetal risk factors, ultrasound timing and frequency are individualized to evaluate the fetal components at the highest risk for fetal anomalies.

Fetal images demonstrate the methodology for obtaining accurate fetal measurements. Above. Crown rump length at 11 weeks. The first trimester crown rump length (CRL) is the most accurate method to determine gestational age and once established should not be changed. The CRL is defined as the longest embryo length excluding the limbs and yolk sac.

In this expert review we summarize the indications, technique, and clinical role of intrapartum sonographic evaluation of fetal head position and attitude.

2017年2月23日 · Assessment of the fetal skull and face is an integral part of the sonographic fetal anatomy examination. Ultrasound (US) is an accurate tool with which to detect craniofacial malformations prenatally 1. In a routine scan, the skull dimensions are measured and the head's shape and integrity are assessed subjectively.

Simplified approach to scanning of fetal skull and cranium scan during routine fetal anomaly scan

Biparietal Diameter and Head Circumference (BPD AND HC): The fetal head measurement must be taken in a cross sectional approach to include the skull, thalamus, cavum septi pellucidi and it must be symmetrical. The fetal head should be imaged laterally through the parietal bone. The measurement is from the outer edge to the inner edge of the ...

2016年8月27日 · Standard fetal biometry includes the following measurements: biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur length (FL). 75 – 80 Other measurements that are commonly performed as a part of a routine examination in some centers are the humerus length (HL) and the transcerebellar diameter (TCD). 81 ...

2018年10月5日 · If ever in doubt as to whether findings are ‘within normal’, refer for specialized (also known as targeted or detailed) ultrasound ACOG/ SMFM recommends offering invasive testing using microarray for fetal structural anomalies detected on prenatal ultrasound