Calculate percentiles and z-scores of fractional arm volume (AVol) and fractional thigh volume (TVol) measurements to compare them with normal ranges during pregnancy. Serial biometry can be graphed by entering multiple data points.
Calculate estimated fetal weight based on sonographic measurements, such as abdominal circumference, as well as soft tissue parameters such as fractional arm volume (AVol) or fractional thigh volume (TVol).
Calculate z-scores for echocardiographic measurements based on z-score ranges using femoral diaphysis length, menstrual age, or biparietal diameter as independent variables.
Documents, references, and external links related to the application of z-scores to the study of fractional limb volume and fetal echocardiographic measurements. This material includes a Quicktime Videoclip demonstration of the fractional limb volume technique and free software called Individualized Fetal Growth Assessment (iGAP) that simplifies the analysis of fetal growth by specifying 2nd trimester size models that are used to personalize assessment of 3rd TM growth.
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Although every effort has been made to ensure that the calculations are accurate when issued, the Authors do not accept any liability for the consequences of any inaccurate or misleading data related to the use of these formulae. This online calculator is also not intended to establish a legal standard of care because some devations are expected and dependent on individual circumstances and available resources.