ARDMS (American Registry for Diagnostic Medical Sonography) Practice Test

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What is the primary use of 3D ultrasound in obstetrics?

To determine fetal heart rate
To visualize the anatomy of the fetus in greater detail
To assess placental location
To monitor fetal movement

The correct answer is: To visualize the anatomy of the fetus in greater detail

The primary use of 3D ultrasound in obstetrics is to visualize the anatomy of the fetus in greater detail. This advanced imaging technique provides a more comprehensive view of the fetal structures compared to traditional 2D ultrasound. It allows for the assessment of facial features, organ development, and anatomical anomalies, which can be invaluable for early diagnosis and management of potential issues. While other forms of ultrasound can be effective in determining fetal heart rate, assessing placental location, and monitoring fetal movement, they do not offer the same level of detailed anatomical visualization that 3D ultrasound provides. This capability is particularly important for understanding complex fetal conditions and ensuring appropriate prenatal care, making it a central application of 3D imaging in obstetrics.