Ultrasound abbreviations - what do they mean?

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During pregnancy visits, an ultrasound is performed, an examination during which the doctor makes various measurements. The most commonly measured is head size, abdomen, femur length. Giving individual results, the gynecologist uses certain abbreviations. Their meaning is described below. Not all of these terms are of course used in every test. Some are evaluated only at certain stages of pregnancy. It should also be remembered that the framework in which the "norm" is located is quite wide, which is why each result should first be evaluated by an experienced gynecologist.

Basic ultrasound shortcuts

AC - baby belly circumference
AIF - amniotic fluid indicator
ASP - fetal heart rate
BPD - two-head dimension, i.e. the width of the head from parietal to parietal
AUA - average age of pregnancy according to ultrasound
CERIUM - cerebellar transverse dimension
CRL - parieto-sitting length, i.e. from the top of the head to the end of the child's torso, and specifically to the coccyx
EDD - approximate date of delivery
EFW - approximate weight of the child
FHR - baby's heartbeat measured in beats per minute
FL - femur length
GA - gestational age by last menstrual period
GS - gestational sac diameter
HC - head circumference
HL - humerus length
LMP - date of last menstrual period
LV - lateral ventricle width
NB - the nasal bone
NF neck crease
NT - neck translucency
OFD - occipital-frontal dimension
OHM - last menstrual period
TCD - transverse dimension of the cerebellum
TP - date of delivery
YS - yolk sac

Less often during the ultrasound examination the following abbreviations are used: APAD - anteroposterior dimension of the abdomen, Aptd - antero-posterior dimension of the chest, TIB - tibia length, ulna - ulnar bone length.