What type of ultrasound is primarily used for obstetric imaging?

The primary type of ultrasound used for obstetric imaging is standard 2D ultrasound. This technique provides detailed images of the developing fetus and the surrounding structures within the uterus. It allows for the assessment of the fetus's growth, development, and overall health. Standard 2D ultrasound is commonly employed during routine prenatal visits to evaluate fetal anatomy, detect potential abnormalities, and monitor the progression of the pregnancy.

In contrast, while 3D ultrasound can provide a more comprehensive view of the fetus by creating volumetric images, it is typically used as a supplemental tool rather than the primary method. Color Doppler ultrasound focuses on assessing blood flow, which is important in some aspects of obstetrics but not the primary imaging method for general fetal assessment. Transvaginal ultrasound is often utilized in early pregnancy or specific situations, but for routine obstetric imaging, standard 2D ultrasound remains the standard choice due to its effectiveness in capturing vital information about the fetus and pregnancy progression.