Intraobserver and interobserver reproducibility of fetal biometry

Perni, Sriram C.; Chervenak, Frank A.; Kalish, Robin B.; Magherini-Rothe, S.; Predanić, Mladen; Streltzoff, Jane; Skupski, Daniel

doi:10.1002/uog.1717

Cited by 106 publications

(104 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The mean error and the error range found between the manual and automatic measurements are comparable with the inter-observer variability documented on high end ultrasound machine by Perni et al [9]. Their inter-observer variability was based on 122 images from singleton pregnancies acquired with Acuson 128 XP (Acuson Inc., Mountain View, CA, USA).…”

Section: N H Khan Et Alsupporting

confidence: 53%

“…The fetal dating process requires the localization of an ultrasound scan plane containing given anatomic landmarks and placement of measurement markers. The measurements are prone to both intra-and inter-observer variability [9]. In order to reduce these errors, the measurement process is repeated a number of times (typically three) and either the mean or the maximum value of these measurements is recorded.…”

Section: N H Khan Et Almentioning

confidence: 99%

See 1 more Smart Citation

Automatic Detection and Measurement of Fetal Biparietal Diameter and Femur Length —Feasibility on a Portable Ultrasound Device

Khan¹,

Tegnander²,

Dreier³

et al. 2017

OJOG

View full text Add to dashboard Cite

An automatic method able to recognize a presented section through the biparietal plane of the fetal head and a section through the fetal femur in ultrasound images is developed. Once the correct anatomical section for measurement is identified by the machine, the placement of the measurement calipers is automatically determined by fitting an active contour model to the structure of interest. The fetal biparietal diameter (BPD) and femur length (FL) are then measured automatically. The validation data set contained 167 and 197 Bmode images for BPD and FL measurements, respectively. The images were acquired using 4 different ultrasound scanners, which resulted in varied image quality and gain settings. The mean gestational age (GA) of the fetuses was 19.4 weeks, range 16 to 41 weeks. A measurement success rate of 90% was achieved for both BPD and FL. The correlation coefficients between the manual and automatic measurements were 0.995 (BPD) and 0.967 (FL), mean errors were 0.5 mm (BPD) and -1.7 mm (FL) and error range with 95% confidence interval (CI) were −3.8 -4.8 mm (BPD) and −11.4 -8.1 mm (FL). The automatic measurement results were consistent in both high and low gain settings. The intraclass correlation coefficients between manual and automatic measurements were 0.995 (95% CI; 0.981 -0.999) for BPD in high gain, 1.0 (95% CI; 0.998 -1.0) for BPD in low gain, 0.998 (95% CI; 0.991 -0.999) for FL in high gain and 0.999 (95% CI; 0.996 -1.0) for FL in low gain settings. The method was implemented on a prototype, portable ultrasound machine designed to be used in low-and middle-income countries (LMIC). The overall performance of the method supports our hypothesis that automated methods can be used and are beneficial in a clinical setting.

show abstract

Section: N H Khan Et Alsupporting

confidence: 53%

Section: N H Khan Et Almentioning

confidence: 99%

Automatic Detection and Measurement of Fetal Biparietal Diameter and Femur Length —Feasibility on a Portable Ultrasound Device

Khan¹,

Tegnander²,

Dreier³

et al. 2017

OJOG

View full text Add to dashboard Cite

show abstract

“…observers may obtain different results on the same still-image) for the manual measurements [12]. Health care workers trained in various parts of the world may not use the same zoom and gain settings.…”

Section: Discussionmentioning

confidence: 99%

“…Fetal measurement using ultrasound is dependent on the experience of the observer and therefore prone to human errors such as intra-and inter-observer variances [12]. In order to make the fetal measurement process more user-friendly and accurate, different research groups have proposed various automatic and semi-automatic measurement techniques [13]- [19].…”

Section: Introductionmentioning

confidence: 99%

Automatic Measurement of Fetal Abdominal Biometric Parameters—Feasibility on a Portable Ultrasound Device

Khan¹,

Tegnander²,

Storve³

et al. 2017

OJOG

View full text Add to dashboard Cite

An automatic method for measuring the fetal mean abdominal diameter (MAD) or abdominal circumference (AC) with ultrasound is proposed. From a correctly presented abdominal section suitable for MAD or AC measurement, the location of fetal abdomen is detected by image processing. Thereafter, an active contour model is converged along the abdominal boundary for measurement purposes. The validation data set contained 310 images of fetuses with gestational age (GA) from 14 to 41 weeks. The measurement success rate was 88.1%. By manually indicating the location of the abdomen, the success rate was further improved to 95.8% for the failed cases. The correlation between manual and automatic measurements was 0.95 and the intraclass correlation coefficient (ICC) was 0.976 (95% confidence interval (CI); 0.969 -0.981). The average method execution time was 0.3 s. The mean error was lower in young fetuses (0.4%) than in older fetuses (−2.1%). The proposed cross-platform method was implemented on a portable, low-cost ultrasound machine prototype targeted for low-and middle-income countries (LMIC); the results achieved were comparable to those of other state-of-the-art automatic methods.

show abstract

“…Ultrasound must be considered the method of choice as it is highly reliable and reproducible. 5 The ultrasound limit for SGA or FGR is arbitrarily fixed at an estimated fetal weight (EFW) or abdominal circumference (AC) under the 3 rd , 5 th , 10 th percentile or below -2 Standard Deviation (SD) from the population standard or reference. 6 When IUGR is the consequence of a placental etiology (placental insufficiency), management is based on the careful fetal assessment to detect the optimal time for delivery.…”

mentioning

confidence: 99%

Enteral feeding of intrauterine growth restriction preterm infants: theoretical risks and practical implications

Bozzetti

Tagliabue

2017

Pediatr Med Chir

View full text Add to dashboard Cite

Intrauterine growth restriction (IUGR) infants are thought to have impaired gut function after birth secondary to intrauterine redistribution of the blood flow, due to placental insufficiency, with a consequent reduction of gut perfusion. For this reason, infants complicated by IUGR have been considered at higher risk of feeding intolerance. Postnatal evaluation of splanchnic perfusion, through Doppler of the superior mesenteric artery, and of splanchnic oxygenation, through near infrared spectroscopy measurements, may be useful in evaluating the persistence (or not) of the redistribution of blood flow occurred in utero. IntroductionThe term intrauterine growth restriction (IUGR) indicates the presence of a pathological process occurring in utero that inhibits fetal growth as documented by at least two fetal intra-uterine growth assessments. Fetal growth restriction (FGR) or intrauterine growth restriction is defined as the failure of the fetus to achieve its growth potential and represents one of the most debated issues in obstetrics, being in continuous search for improvement in terms of definition, classification, diagnosis and management. 1 IUGR is an important problem in perinatal medicine. It is the second cause of perinatal mortality after prematurity. The two conditions are often associated in case of iatrogenic prematurity. Fifty-two per cent of stillbirths are associated with IUGR and 10% of perinatal mortality cases in Europe are the consequence of unrecognized severe growth restriction. In developed countries, 3-7% of newborns are classified as IUGR. 2 The most common cause of IUGR is the placental obliterative vasculopathy that reduces nutrients and oxygen supply to the fetus; the causes include, but are not limited to, maternal malnutrition, maternal hypertension and idiopathic placental insufficiency. Placental insufficiency may be characterized by blood flow redistribution to the vital organs (brain, myocardium, and adrenal glands), while other organs, including the gastrointestinal tract, are deprived from sufficient blood flow. These fetuses are at increased risk of hypoxia, hypoglycemia and acidosis and also spontaneous preterm delivery. 3,4 The intrauterine growth restriction fetus: detection and monitoring Fetal monitoringThe main directions towards assessing fetal growth state can be clinical (e.g. the assessment of symphyseal-fundal height) and paraclinical (e.g. ultrasound biometry).Commonly used clinical methods for estimating fetal size are clinical palpation, fundal height measurement and ultrasonic fetal biometry. Serial ultrasound biometric recordings may be able to identify the fetus that does not reach its growth potential. Ultrasound must be considered the method of choice as it is highly reliable and reproducible. 5 The ultrasound limit for SGA or FGR is arbitrarily fixed at an estimated fetal weight (EFW) or abdominal circumference (AC) under the 3 rd , 5 th , 10 th percentile or below -2 Standard Deviation (SD) from the population standard or reference. 6 When IUGR is t...

show abstract

Intraobserver and interobserver reproducibility of fetal biometry

Cited by 106 publications

References 10 publications

Automatic Detection and Measurement of Fetal Biparietal Diameter and Femur Length —Feasibility on a Portable Ultrasound Device

Automatic Detection and Measurement of Fetal Biparietal Diameter and Femur Length —Feasibility on a Portable Ultrasound Device

Automatic Measurement of Fetal Abdominal Biometric Parameters—Feasibility on a Portable Ultrasound Device

Enteral feeding of intrauterine growth restriction preterm infants: theoretical risks and practical implications

Contact Info

Product

Resources

About