What does the abbreviations mean on ultrasound?

Ultrasound abbreviations

* 2D: Two-dimensional ultrasound

* 3D: Three-dimensional ultrasound

* 4D: Four-dimensional ultrasound

* AC: Abdominal circumference

* AFP: Alpha-fetoprotein

* BPD: Biparietal diameter

* CRL: Crown-rump length

* EDD: Estimated due date

* FHR: Fetal heart rate

* FT: Femur length

* GD: Gestational age

* HC: Head circumference

* LMP: Last menstrual period

* NT: Nuchal translucency

* OFD: Occipitofrontal diameter

* TVS: Transvaginal ultrasound

* US: Ultrasound