KITTY&mimmy
but sometimes I will feel too many celebrations la. . . . with U freinds, with 2nd sch friends, with family members . . . .then no world of 2 la. (or world of 3-4)
What are "AC", "BPD", "FL" and "HC" in ultrasound measurements?
Abdominal Circumference 腹圍(AC) measures the mother's belly in cross section. Especially later in pregnancy, it is used as an indicator of fetal weight and growth. Sometimes, serial measurements are taken to ensure an accurate reading.
BPD 胎頭雙頂徑stands for Biparietal Diameter and is an ultrasound measurement taken of the baby's head (from side to side). Along with the Femur Length 股骨長(FL) and Abdominal Circumference (AC), it is used to estimate the fetal weight.
Femur Length (FL) often is measured along with AC and BLD measurements. The femur is the longest bone in the body and measurement of this bone is taken to estimate fetal growth.
AC, BPD and FL are combined in a formula to estimate fetal weight. While most ultrasound machines contain calculators, here is the formula used to figure the fetal weight: 1.4 X BPD X FL X AC (all in centimeters) - 200 = Fetal weight. (This is an estimate and becomes less accurate as baby gets farther from about 5.5 lbs.)
HC頭圍 indicates Head Circumference. Babies of the same weight can have different head sizes.