Accuracy of fetal lung volume assessed by three‐dimensional sonography

Ruano, Rodrigo; Martinovic, Jéléna; Dommergues, Marc; Aubry, Marie Cécile; Dumez, Yves; Benachi, Alexandra

doi:10.1002/uog.2624

Cited by 112 publications

(94 citation statements)

References 39 publications

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confidence: 99%

“…Total and contralateral fetal lung volumes can be measured precisely on 3DUS [23,24] correlating significantly with neonatal deaths [21,24] . Total fetal lung can be calculated using the rotational technique (VOCAL TM ) by summing the right and left lung volumes [19][20][21][22][23] . Initial results showed that an observed/expected total fetal lung volume ratio (o/e-TotFLVR) lower than 0.35 was significantly associated with neonatal deaths [21] , confirming the results of previous studies using MRI [15][16][17][18] .…”

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Ipsilateral Lung Volumes Assessed by Three-Dimensional Ultrasonography in Fetuses with Isolated Congenital Diaphragmatic Hernia

et al. 2008

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Objective: To evaluate the precision of three-dimensional ultrasonography (3DUS) in estimating the ipsilateral lung volume and the potential of this measurement to predict neonatal death in congenital diaphragmatic hernia (CDH). Methods: Between January 2002 and December 2004, the ipsilateral lung volumes were assessed by 3DUS using the technique of rotation of the multiplan imaging in 39 fetuses with CDH. The observed/expected ipsilateral lung volume ratios (o/e-IpsiFLVR) were compared to the lung/head ratios (LHR) and to the observed/expected total fetal lung volume ratios (o/e-TotFLVR) as well as to postnatal death. Results: Ipsilateral lung volumes (median 0.12, range 0.01–0.66) were more reduced than the total lung volumes (median 0.52, range 0.11–0.95, p < 0.001) in CDH. The bias and precision of 3DUS in estimating ipsilateral lung volumes were –0.61 and 0.99 cm³, respectively, with absolute limits of agreement from –2.56 to +1.33 cm³. The o/e-IpsiFLVR was lower in neonatal death cases (median 0.09, range 0.01–0.46) than in survivals (median 0.18, range 0.01–0.66), but this difference was not statistically significance (p > 0.05). The sensitivity, specificity, (positive and negative) predictive values and accuracy of o/e-IpsiFLVR in predicting neonatal death was 52.6% (10/19), 83.3% (10/12), 83.3% (10/12), 52.6% (10/19) and 64.5% (20/31), respectively. Conclusion: Although the ipsilateral lung volume can be measured by 3DUS, it cannot be used to predict neonatal death when considering it alone. However, it is important to measure it to calculate the total fetal lung volumes as the o/e-TotFLVR has the best efficacy in predicting neonatal death in isolated CDH.

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Ipsilateral Lung Volumes Assessed by Three-Dimensional Ultrasonography in Fetuses with Isolated Congenital Diaphragmatic Hernia

et al. 2008

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“…Others [2,3,13] performed multiple measurements ranging from two to five measurements of each object, without a clear explanation for the repetition of the measurements. It is expected that multiple measurements will even out, and thus reduce the measurement error.…”

Section: Methodsmentioning

confidence: 99%

“…Both methods overestimated the actual volume, but all measurements had an error of less than 4%. Ruano et al [3] compared 3D measurements of lung volume with the VOCAL technique and post-mortem volume measurements of the fetal lungs. These authors reported that the VOCAL technique produced accurate volume measurements.…”

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Volume-Related Measurement Error by Three-Dimensional Ultrasound with a Rotational Multiplanar Technique

Smeets

Winkens

Oei

2012

Gynecol Obstet Invest

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Background: The goal of this study was to calculate the accuracy of three-dimensional volume measurements with the rotational multiplanar technique VOCAL (Volume Organ Computer-aided AnaLysis). Methods: An ultrasound phantom with 13 objects (volume 10.2–40.5 cm³) was created. After data acquisition, the volumes of the objects were measured with the VOCAL technique. Results: A linear mixed model analysis showed a significant linear (B = –0.008, 95% CI –0.014, –0.002, p = 0.005) and a significant quadratic trend (B = 0.0001, 95% CI 0.000004, 0.0002, p = 0.040). The absolute error increases significantly with the increasing volume of interest with 0.044 cm³ for each cm³ rise of the volume of interest. The actual volume increased from an initial value of 10 cm³ to values of 20, 30 and 40 cm³, resulting in a decrease in the mean estimated percentage error from 15.4 to 10.6%, 8.0% and 7.5%. Conclusion: The results of this study showed that volume measurements with three-dimensional ultrasound and the VOCAL software can be used for volume measurements in vivo. However, it is important to assess the measurement error and to consider these error values when interpreting the results in daily practice.

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Major fetal structural malformations: The role of new imaging modalities

Lee

Simpson²

2007

American J of Med Genetics Pt C

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Prenatal diagnosis has embraced a recent wave of innovative imaging modalities including three-dimensional (3D) ultrasound and fetal magnetic resonance imaging (MRI). Traditional two-dimensional (2D) ultrasonography remains the standard method by which major structural abnormalities are diagnosed antenatally, but advances in technology are opening new doors. Growth in our knowledge about fetal development, improved patient counseling, and more favorable perinatal outcomes are all potential benefits of incorporating new imaging modalities into clinical practice. ß 2007 Wiley-Liss, Inc.

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Accuracy of fetal lung volume assessed by three‐dimensional sonography

Abstract: Objective To determine the accuracy and precision of prenatal three-dimensional (3D) 84.86 (range, 57.30-99.48)% in cases with CDH and 91.38 (range,

Cited by 112 publications

References 39 publications

Ipsilateral Lung Volumes Assessed by Three-Dimensional Ultrasonography in Fetuses with Isolated Congenital Diaphragmatic Hernia

Ipsilateral Lung Volumes Assessed by Three-Dimensional Ultrasonography in Fetuses with Isolated Congenital Diaphragmatic Hernia

Volume-Related Measurement Error by Three-Dimensional Ultrasound with a Rotational Multiplanar Technique

Major fetal structural malformations: The role of new imaging modalities

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