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Estimated fetal weight ultrasound calculator

Fetal Growth Calculator NICHD - Eunice Kennedy Shriver

Estimation of Fetal Weight - Perinatology

This calculator uses the most common ultrasound formula; proposed by Shephard et al. Estimated fetal weight (eFW in Kg, BPD and AC in mm): Log 10 (eFW)= -1.7492+(0.0166*BPD)+(0.0046*AC)-2.646*(BPD*AC)/100 To calculate your due date using the Flo calculator, follow these steps: 1. Insert the date when you had your ultrasound in the Date of ultrasound field. 2. Insert the week and day of your pregnancy that was estimated by the ultrasound — this is the gestational age of the fetus or how far you are in your pregnancy The Fetal Growth Velocity Calculator. The NICHD Fetal Growth Studies velocity calculator is designed to estimate fetal growth velocity between 11 0/7 to 41 6/7 weeks of gestation for one baby. Four estimates of estimated fetal weight (EFW) percentiles can be obtained and depend on the ultrasound measurements entered, including head.

Shepard formula is used to ultrasound estimate of fetal weight using BPD and AC parameters (Biparietal Diameter of your baby's head and Abdominal Circumference) Log 10 (fetal weight) = -1.7492+ 0.166BPD +0.046AC - 2.646(ACBPD)/1,000 These parameters are considered to be more accurate and simpler than others. Significant errors in. Estimating Fetal Weight. The software uses fetal biometric measurements (in mm) of biparietal diameter (B), head circumference (H), abdominal circumference (A) and femur length (F) obtained from ultrasound measurements to calculate the estimated fetal weight (in grams). Please enter only one of the following combinations: A, AF, AFH, AFB or. The birth weight is plotted on the reference range for gestational age derived from the formula reported by: Nicolaides KH, Wright D, Syngelaki A, Wright A, Akolekar R. Fetal Medicine Foundation fetal and neonatal population weight charts. Ultrasound Obstet Gynecol 2018; doi:10.1002/uog.19073 Estimated fetal weight calculator. This calculator uses the most common ultrasound formula; proposed by Shephard et al. Doing an ultrasound to estimate fetal weight near term is a very common practice, one still employed by many OBs, especially with large mothers. However, research clearly shows that this is a very questionable practice

Accuracy of fetal weight estimation is of key importance in antenatal care, as well as in the planning and management of labour and mode of delivery [1,2,3,4,5,6,7,8,9].In order to achieve more accurate prenatal fetal weight estimations and align these with a risk-optimizing mode of delivery, additional tools supporting the standard of use with ultrasound are needed To validate our new formula we used the formula-evaluation group, seen between 1999 and 2003 in the same setting, with an estimated fetal weight (EFW) of ≤ 1600 g, and studied prospectively (n = 87). Weight calculation with our new formula was also tested against established equations 1, 5-8. Patients gave their verbal consent to this part of. Ultrasound is estimated to predict within 8-15% of true birth weight. It was also easier for doctors to identify babies who might be bigger than 8.8 pounds, a weight at which the risk of delivery.

Fetal Growth Calculator - SRH

  1. The estimated fetal weight is plotted on the reference range for gestational age derived from the formula reported by: Nicolaides KH, Wright D, Syngelaki A, Wright A, Akolekar R. Fetal Medicine Foundation fetal and neonatal population weight charts. Ultrasound Obstet Gynecol 2018; doi:10.1002/uog.19073
  2. ers with differing skill levels. Ultraschall Med 2008; 29:159
  3. However, Plus Size Pregnancy reports that in many cases, ultrasound fetal weight estimates are no more accurate than those provided by a doctor 1. The calculations required to estimate your baby's weight will most likely by done by a doctor or ultrasound technician. In most cases, estimated weights that are considered low or high during.

The accuracy within 10% of actual birth weights was 69.5% and 72% for both clinical estimation of fetal weight and ultrasound, respectively, and the difference was not statistically significant . The accuracy of fetal weight estimation using Dare's formula is comparable to ultrasound estimates for predicting birth weight at term. 1. Introductio Because the estimated fetal weight (EFW) is critical for management decisions, including timing of delivery, it is important to determine the combination of biometric measurements that most accurately estimate the fetal weight in these fetuses. The standard formula of Hadlock et al 2 incorporates the BPD, HC, AC, and FL to estimate fetal weight.

Background: Accurate estimation of fetal weight is needed for growth monitoring and decision-making in obstetrics; the INTERGROWTH project developed an estimated fetal weight formula to construct new intrauterine growth standards. Objective: We sought to compare the accuracy of the Hadlock and INTERGROWTH formulas for the estimation of fetal weight among preterm infants Accuracy of sonographic fetal weight estimation of fetuses with a birth weight of 1500g or less. Eur J Obstet Gynecol Reprod Biol. 2010;153(2):131-7. Article Google Scholar 61. Dudley N. A systematic review of the ultrasound estimation of fetal weight. Ultrasound Obstet Gynecol. 2005;25(1):80-9 The measurement of fetal biometry in the second and third trimesters is an important part of these examinations and biometric measurements are combined routinely in order to calculate the estimated fetal weight (EFW) 5. EFW is a useful parameter with which to predict birth weight and outcome when it is calculated a few days before delivery The NICHD Fetal Growth Studies velocity calculator is designed to estimate fetal growth velocity between 11 0/7 to 41 6/7 weeks of gestation for singleton gestations (one baby). Four estimates of Estimated Fetal Weight (EFW) percentiles can be obtained depending upon the ultrasound measurements entered for a gestational age. These measurements include: head circumference (HC), biparietal. New fetal weight estimation models have been finalized and this calculator allows the user to enter sonographic measurements for EFW that is based on 2D and 3D parameters. Ultrasound Obstet Gynecol, in press.-Derivation Model 1 (AVol) Ln EFW = 4.9588-0.0526(Ln AVol)(Ln AVol)+1.0721(Ln AVol).

Estimated fetal weight centiles. ×. Adaptation to the population of Vall d'Hebron Hospital according to Mikolajczyk et al. A Global Reference for Fetal-Weight and Birthweight Percentiles.. The Lancet 377 (9780): 1855-61. Growth curves of estimated fetal weight based on low risk pregnancies in Vall d''Hebron Hospital Estimating Fetal Weight. The software uses fetal biometric measurements of abdominal circumference, femur length and head circumference obtained from ultrasound to calculate the estimated fetal weight Get Fetal Weight Calculator - Estimate Weight and Growth Percentile for iOS latest version. The Fetal Weight Calculator helps physicians, nurses, midwives, medical residents, students and other medical professionals quickly compute prenatal weight estimates by using one or more key measurements from a fetal sonogram (ultrasound) The software uses fetal biometric measurements of abdominal circumference, femur length and head circumference obtained from ultrasound to calculate the estimated fetal weight. The calculator is based on Campbell's (A) formula [1] and Hadlock's (H, A and F) formula [2], where: A = Abdominal circumference; F = Femur length; H = Head circumferenc The Fetal Weight Calculator helps physicians, nurses, midwives, medical residents, students and other medical professionals quickly compute prenatal weight estimates by using one or more key.

The Estimated Fetal Weight Calculator is an Excel-based application. It produces centiles and z-scores for these measurements based on the INTERGROWTH-21 st Estimated Fetal Weight Standards. Excel-based EFW Calculator. N/A. Centiles and z-scores of large datasets can also be calculated. Symphysis-Fundal Height For preterm fetuses delivered at less than 37 weeks' gestation, the 1-way accuracy of such sonographic fetal biometric classifications of clinically significant birth weight deviations (ie, low birth weight) is better; the positive predictive value of a sonographic estimate of fetal weight less than 2500 grams is 87% for preterm fetuses, with. 2.Estimated fetal weight -( HC, AC and FL or AC and FL Charts-Hadlock et al 1985) 3.A weight percentile calculated from the estimated weight and gestational age (CGC) Third Trimester growth scan BMI ≥ 35 should be referred for serial assessment of fetal size using ultrasound. The Fetal Weight Calculator helps physicians, nurses, midwives, medical residents, students and other medical professionals quickly compute prenatal weight estimates by using one or more key measurements from a fetal sonogram (ultrasound) Ultrasound estimation of fetal weight before birth is today very widely used in clinical practice, and, while essential for the identification and management of high-risk pregnancies, the current reference ranges used worldwide are largely based on single populations from a few high-income countries and are therefore of uncertain general.

OBSONO.org: Estimated Fetal Weight, Fetal Cardiac Dimensions, and Individualized Growth Assessment. Selected Calculator: Fractional Limb Volume - Percentiles and Z Scores EFW Using 2D Biometry with Fractional Limb Volume Fetal Heart Biometry - Z Scores Based on FDL, Menstrual Age, or BPD. Fractional Limb Volume Z-Score Calculator Excel-based Estimated Fetal Weight Calculator. Training & Resources. Study Protocol . Ultrasound operations manual. Fetal Growth Longitudinal Study Operation Manual. INTERGROWTH-21 st course on maternal, fetal and newborn growth monitoring - Module 3: Monitoring of fetal growth by ultrasound (in development The accuracy within 10% of actual birth weights was 69.5% and 72% for both clinical estimation of fetal weight and ultrasound, respectively, and the difference was not statistically significant . The accuracy of fetal weight estimation using Dare's formula is comparable to ultrasound estimates for predicting birth weight at term. 1. Introductio However, Plus Size Pregnancy reports that in many cases, ultrasound fetal weight estimates are no more accurate than those provided by a doctor 1. The calculations required to estimate your baby's weight will most likely by done by a doctor or ultrasound technician. In most cases, estimated weights that are considered low or high during. Fetal Weight Chart Early on during their development, babies will grow at varying rates so it is important to keep in mind that the fetal weight chart only lists averages. If your baby is significantly larger or smaller on an ultrasound, this should not be cause for alarm unless your doctor says so

Fetal Weight Calculator babyMed

Calculated optimal birth weight at term = gm 10th to 90th centile gm. Enter specific gestation to obtain estimated optimal fetal weight at that gestation. GESTATION Weeks = + days = is gm 10th to 90th centile gm. Expected fundal height cms 10th to 90th centiles. References Gardosi J, Mongelli M, Chang A Results: The mean absolute errors ± standard deviation of ultrasound fetal weight estimations performed by maternal-fetal medicine subspecialists and obstetrics and gynaecology residents were 5.89% ± 5.10% and 7.77% ± 5.72%, respectively (p=0.03). The percentage of correctly estimated fetal weights (defined as <10% difference fro This free pregnancy calculator provides an estimated pregnancy schedule based on due date, last period date, ultrasound date, conception date, or IVF transfer date. Track important milestones within the first, second, and third trimesters of pregnancy, or explore hundreds of other calculators addressing health, fitness, math, finance, and more The easiest way to use the gestational calculator is to simply enter the first day of your last period. If you don't know when the first day of your last period was, you can use these other ways: Probable Delivery Date (or DPP) : knowing when your baby's expected date of birth is, just put that day on the calculator Estimate pregnancy due date using ultrasound results. Become a Contributor. Support. Login. Sign Up. Back to all calculators. Calculator References. Back to all calculators. Calculator References. The Due Date by Ultrasound calculator is created by QxMD. Created by on . 28/07/201

Fetal Weight Percentile Calculator Fetal Growt

Formula for Estimate Fetal Weight The evidence for the calculation of estimated fetal weight (EFW) was summarised and circulated in February 2003. The recommended EFW formula is that of Hadlock for HC, AC, and FL, as it appears to perform best across a range of different populations and fetal weights Fetal Length Calculator. * Femur Length (FL) - Measures the longest bone in the body and reflects the longitudinal growth of the fetus. It increases from about 1.5 cm at 14 weeks to about 7.8 cm at term. The Fetal Length Calculator calculates the length of a baby in the womb according to the length of a baby's femur The ultrasound estimated fetal weight correlated with the actual birth weight. Ultrasound estimation of fetal weight should be done when indicated to aid the clinician in making decisions concerning routes of delivery. 1. Introduction. In utero estimation of fetal weight is an important component of management of pregnancy Fetal growth percentile software: a tool to calculate estimated fetal weight percentiles for 6 standards June 2, 2020 Over the years, several fetal growth standards were proposed, based on either fetal or neonatal data, and they include 1) one-size-fits-all; 2) customized by race/ethnic group and other maternal and fetal characteristics; and 3.

METHODS: Upon admission, the mother's opinion about fetal weight was recorded. Symphyseal-fundal height and abdominal girth were measured and two formulas were used to calculate fetal weight. An ultrasound scan was then performed by a specialist to estimate fetal weight. The four estimates were compared with the birth weight This free pregnancy conception calculator estimates a range of conception dates based on a provided due date, last period date, or ultrasound date. Determine the most probable conception dates, and explore a number of other pregnancy calculators, as well as hundreds of other calculators addressing health, fitness, finance, math, and more.

Calculation of the weight of a fetus is done using ultrasound, which can monitor both the growth and the weight of the fetus. Discover how to calculate the w.. Interactive Estimated Fetal Weight Calculation within the Babson and Benda's chart for pre-term infants. Use of the Hadlock, Campbell, Warsoff, and Ott formulas to calculate and plot the Estimated Fetal Weight(EFW) as a function of any EGA week using the Babson and Benda's chart Analysis the growth of a fetus is essential and most important at pregnancy time. For this, we have to consider the fetal biometric measurements. Normally to check the growth of a fetus we used to measure weight of the fetal. The weight estimation i Search Results. 500 results found. Showing 1-25: ICD-10-CM Diagnosis Code P07.0. Extremely low birth weight newborn. low birth weight due to slow fetal growth and fetal malnutrition (P05.-); Newborn birth weight 999 g. or less. ICD-10-CM Diagnosis Code P07.0. Extremely low birth weight newborn Twin growth discordance is a term used in obstetric imaging to describe a significant size or weight difference between the two fetuses of a twin pregnancy.To be classified as a growth discordance, some consider that the estimated fetal weight (EFW) of the smaller twin should fall under the 10 th centile

As ultrasound technology improved, it was possible to estimate fetal weight using mathematical modeling by measuring certain fetal characteristics as described previously in this chapter. In 1991, Ott and coworkers compared birth weight percentile at various gestational ages as determined by an ultrasound-derived EFW curve versus a standard BW. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators. Kiserud T, Piaggio G, Carroli G, Widmer M, Carvalho J, Neerup Jensen L, et al. (2017) The World Health Organization Fetal Growth Charts: A Multinational Longitudinal Study of Ultrasound Biometric Measurements and Estimated Fetal Weight The accurate estimation of fetal weight by ultrasound is important in the treatment of many complications in pregnancy. When complications occur at the limits of fetal viability, knowledge of fetal weight will help to assess the likelihood of neonatal survival and hence determine whether to prolong the pregnancy with conservative treatment or to deliver the fetus. 1 Small for gestational age.

Fetal Percentile Ultrasound Measurements Calculator

The estimated weight that is calculated is just an estimate based upon the size (or mass) of the baby. But since those extra factors (bone density, etc.) cannot be evaluated with ultrasound, the TRUE weight of the baby cannot be measured with 100% accuracy 1. BMC Pregnancy Childbirth. 2018 May 2;18(1):118. doi: 10.1186/s12884-018-1772-7. Accuracy of immediate antepartum ultrasound estimated fetal weight and its impact on mode of delivery and outcome - a cohort analysis

Top OB U/S apps: Obstetric Ultrasound Scan Protocols

Fetal Biometry Calculator I

Ultrasound estimated fetal weight is increasingly being used in the monitoring of fetal growth. Differences between estimated fetal weight formulae, curves and measurement methods could lead to significant differences in results. The aim of this study was to investigate the potential impact of these differences on estimated fetal weight and its. Pregnancy care has advanced tremendously in the last 200 years, but most due date calculators are based on a simple formula called Naegele's Rule popularized in 1812. The simple formula does not take into account that the length of pregnancy changes based on the mother's and baby's characteristics Next, we multiplied fetal-weight estimates based on Hadlock's reference for each gestational week by this ratio and obtained mean fetal-weight estimates across gestation for the specific country. Finally, we used the estimate of SD from the sample of births at 40 weeks of gestation to obtain weight percentiles across gestation Estimated fetal weight was calculated using the Hadlock formula. Published estimates of fetal growth rate were used to establish a projected estimated fetal weight at birth from the final growth ultrasound, and the percent difference between projected estimated fetal weight at birth and actual birthweight was calculated Prior to delivery, the fetal weight is often estimated either by feeling the maternal abdomen or by ultrasound. There are many studies describing the accuracy of these methods. In this study, we took a unique look at this issue and calculated the likelihood an ultrasound showing a large fetal weight was over- or under-estimating the true weight

Fetal Growth Calculator babyMed

***EFW - Estimated Fetal Weight 2. Establish a fetal ultrasound database to dynamically observe fetal growth curves. [Features] Feature 1: Fully compatible with high-end ultrasound instrument data standards. Feature 2: The text combined with the chart shows the analysis results, easy to understand, simple and clear Fetal growth restriction (FGR) is a condition in which an unborn baby (fetus) is smaller than expected for the number of weeks of pregnancy (gestational age). It's often described as an estimated weight less than the 10th percentile. This means that the baby weighs less than 9 out of 10 babies of the same gestational age Sonographic estimation of fetal weight: comparison of bias, precision and consistency using 12 different formulae. Ultrasound Obstet Gynecol. 2007; 30(2):173-9 (ISSN: 0960-7692) Anderson NG; Jolley IJ; Wells J Shepard MJ, Richards VA, Berkowitz RL et al: An evaluation of two equations of predicting fetal weight by ultrasound. Am J Obstet Gynecol 142: 47, 1982 : 34. Hadlock FP, Hardst RB, Sharman RS et al: Estimation of fetal weight with the use of head, body, and femur measurements-a prospective study. Am J Obstet Gynecol 151: 333, 1985 : 3 Jeanty P, Cantraine F, Cousaert E et al: The binocular distance: A new way to estimate fetal age. J Ultrasound Med 3: 241, 1984 : 43. Goldstein I, Reece EA, Pilu et al: Cerebellar measurements with ultrasonography in the evaluation of fetal growth and development. Am J Obstet Gynecol 156: 1065, 1987 : 4

Estimating Fetal Weight via Ultrasound babyMed

Estimated fetal weight calculator Enter a BPD and AC in mm: gram The Fetal Weight Calculator helps physicians, nurses, midwives, medical residents, students and other medical professionals quickly compute prenatal weight estimates by using one or more key measurements from a fetal sonogram (ultrasound). Weight estimates can provide helpful guidance during a mother's pregnancy and can also be used to help. Hiwale S, Misra H, Ulman S. Fetal weight estimation by ultrasound: development of Indian population-based models. Ultrasonography. 2019 Jan;38(1):50-57. Introduction The accurate estimation of intrapartum fetal weight is very important for clinical management, as it is very closely linked with the survival and well-being of a fetus Estimated Date of Delivery Calculator (EDD) There are two main techniques for obtaining the EDD. Both are common medical practice, and both are used in this Estimated Date of Delivery calculator. In essence, the first one is based on the date of your Last Menstrual Period, and the second one relies on the results of an Ultrasound.

Estimation of Fetal WeightThe World Health Organization Fetal Growth Charts: A

Fetal weight estimation methods have been discussed by various authors. Tactile assessment of foetal size Dare et al used this technique by multiplying the abdominal girth (cm) with symphysiofundal height (cm) and calculated the estimated foetal weight in grams (21).However, this is les Calculate estimated fetal weight given abdominal circumference and head circumference Usage. 1. calculate_efw (ac = NULL, hc = NULL) Arguments. ac: Abdominal circumference in centimetres. Use measurements made between 22+0 and 40+0 gestational weeks only. hc: Head circumference in centimetres. Use measurements made between 22+0 and 40+0.

Fetal Birth Weight Calculator Percentile Charts EFW Graphs

DOI: 10.1016/j.ajog.2012.06.065 Corpus ID: 39933032. Estimated fetal weight by ultrasound: a modifiable risk factor for cesarean delivery? @article{Little2012EstimatedFW, title={Estimated fetal weight by ultrasound: a modifiable risk factor for cesarean delivery?}, author={S. Little and A. Edlow and A. Thomas and N. A. Smith}, journal={American journal of obstetrics and gynecology}, year={2012. Ultrasound measurement of the embryo or fetus in the first trimester (up to and including 13 6/7 weeks of gestation) is the most accurate method to establish or confirm gestational age. If pregnancy resulted from assisted reproductive technology (ART), the ART-derived gestational age should be used to assign the estimated due date (EDD) Pregnancy Calendar and Due Date Calculator. Calculate Based On: Last Period Conception Date Due Date. Your Due Date *. Calculate! Your Conception Date *. Calculate! This is not a diagnosis. The calculations that are provided are estimates based on averages The objective of this study is to assess the ultrasound accuracy in fetal weight estimation related to the time distance between the actual weight recorded at delivery and the period of sonography among normal and overweight/obese pregnant women within 3 weeks prior birth at term. Four-hundred and ninety patients with healthy pregnancy were studied in a cohort study The MCA peak systolic velocity increases by 0.2 cm/s with every 100g (3.5 ounces) of fetal weight gain. An increased velocity of blood flow through the middle cerebral artery (and/or dilatation) may be indicative of hypoxia, with a redirection of blood flow to vital organa, such as brain, heart and lungs

Crown rump length is a method that is commonly used to determine the length of the fetus or baby. It is calculated by using a Crown Rump Length calculator / CRL calculator. From the top of the head to buttocks the length is measured, except yolk sac or the limbs. CRL is measured throughout all weeks of pregnancy starting from 7 weeks to 14 weeks The CRL is measured from the outer edge of the cephalic pole to the outer edge of the fetal rump. One must be careful not to include the yolk sac in the measurement 9 ( Fig. 12-1 ). The CRL can be used to assess the gestational age between 6 and 14 weeks ( Table 12-2 ). Its best accuracy is from 6 to 10 weeks, during which time it has an.

3. Kurmanavicius J et al. Ultrasonographic fetal weight estima-tion: accuracy of formulas and accuracy of examiners by birth weight from 500 to 5000 g. Journal of perinatal medicine, 2004, 32:155-61. 4. Ben-Haroush A et al. Accuracy of sonographically estimated fetal weight in 840 women with different pregnancy complica Gynecological ultrasound; Pregnancy calculator; Contact. Femicare, s.r.o. MUDr. František Grochal Kollárova 17A 036 01 Martin Slovakia ID: 45 313 776 Tax ID: 2022930041 . phone: +421 43 4134668 mobile phone: +421 907 828 604 e-mail: femicare@femicare.org web: www.femicare.org. let´s run togethe Fetal weight (FW) estimation in late pregnancy is an important guide in obstetric care. Amniotic fluid protects the fetus against traumatic and infective insults. There possibly exists a relationship between FW and amniotic fluid index (AFI) that can be estimated by ultrasonography

Impact of Ultrasound Training and Experience on Accuracy

The length of gestation age is calculated as 280 days from the last menstrual period and 266 days from conception. There is another method by Naegele. In this method estimated due date can be calculated by adding 7 days with LMP and subtracting 3 months. Gestational age calculation from the first day of the last period can differ in many cases Julia Milner, Jane Arezina, The accuracy of ultrasound estimation of fetal weight in comparison to birth weight: A systematic review, Ultrasound, 10.1177/1742271X17732807, 26, 1, (32-41), (2018). Crossre Health care providers generally measure fetal age through ultrasounds. An ultrasound lets them measure the size of your baby's head, abdomen, and thigh bone, which together indicate fetal age. Estimated due date. In order to estimate your baby's due date, physicians look at your LMP and first ultrasound examination. They'll generally add.

Background. Birth weight differences of more than 20% in twins is associated with poor outcomes for the mother and baby. Clinicians measure the estimated fetal weight differences by ultrasound before birth and compare it to differences in birth weight after the babies are born formula are used for fetal weight estimation. Ultrasonography Several formulae have been developed for estimating fetal weight by ultrasound [4,7-10]. These formulae involve a variety of sonographically obtained biometric measurements. The most popular formulae are Shepard, Warsof's with Shepard's modification and Hadlock's

The estimation of fetal weight by computer-assisted analysis. Am J Obstet Gynecol 1977; 128:881. Shepard MJ, Richards VA, Berkowitz RL, et al. An evaluation of two equations for predicting fetal weight by ultrasound. Am J Obstet Gynecol 1982; 142:47. Pinette MG, Pan Y, Pinette SG, et al. Estimation of fetal weight: mean value from multiple. These visual weight estimates (VWEs) may be imprecise and can lead to dosing errors. We have identified an objective method of estimating Bwt that involves extrapolating prenatal ultrasound estimated fetal weight (UEFW) percentiles onto the modified Fenton growth curve (MFGC) Estimate the fetal head area roughly. =>Estimate the center position of cranium using the brightness and structural information expected to be seen in a typical cranium. Estimate the fetal head area in detail. =>Search for a high brightness circular structure based on the estimated center using dynamic programming Keywords Ultrasound Estimation of fetal weight Sonographic estimation of fetal weight (EFW) is widely used in obstetrics as a valuable information for planning the mode of delivery and management of labor. Notwith-standing extensive researches in the past years, very littl when to refer to Ultrasound for a growth scan 3. DEFINITIONS BMI Body mass index Centile lines The lines of growth on the customised growth chart are estimated fetal weight centile lines, 10th, 50th and 90th. EDD Estimated date of delivery EFW Estimated Fetal Weight FH Fundal Heigh