Where can 3VC be evaluated?

The evaluation of the three-vessel cord (3VC), which consists of two arteries and one vein, is most commonly assessed around the fetal bladder. This is because the location around the bladder provides an optimal view of the umbilical cord where the vessels are typically observed. When scanning in this region, sonographers focus on the cord's insertion point, which is crucial for correctly identifying the number and structure of the vessels.

In contrast, while other regions such as those around the liver, heart, or kidneys might provide useful views in a general ultrasound, they do not typically yield the comprehensive visualization required for accurately assessing the 3VC. The fetal bladder area is specifically chosen for such assessments due to the orientation of the umbilical cord and vessels as they relate to the bladder. This targeted approach ensures that sonographers can effectively confirm normal vascular patterns and identify any anomalies.