Measurement of the Lateral Ventricles in the Neonatal Head: Comparison of 2-D and 3-D Techniques

McLean, Glenda; Coombs, Peter; Sehgal, Arvind; Paul, Eldho; Zamani, Lily; Gilbertson, T; Ptasznik, Ronnie

doi:10.1016/j.ultrasmedbio.2012.07.018

Cited by 18 publications

(18 citation statements)

References 10 publications

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“…Studies were performed to assess the feasibility and the variability of measurements of lateral ventricles. 54 An automated image processing based approach that measures the anterior horn width as the distance between medial wall and floor of the lateral ventricle at the widest point was developed. Measurement is done in the plane of the scan at the level of the intraventricular foramina.…”

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confidence: 99%

Neonatal cranial ultrasound: current perspectives

Franco¹,

Lewis²

2013

RMI

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Ultrasound is the most common imaging tool used in the neonatal intensive care unit. It is portable, readily available, and can be used at bedside. It is the least expensive cross sectional imaging modality and the safest imaging device used in the pediatric population due to its lack of ionizing radiation. There are well established indications for cranial ultrasound in many neonatal patient groups including preterm infants and term infants with birth asphyxia, seizures, congenital infections, etc. Cranial ultrasound is performed with basic grayscale imaging, using a linear array or sector transducer via the anterior fontanel in the coronal and sagittal planes. Additional images can be obtained through the posterior fontanel in preterm newborns. The mastoid fontanel can be used for assessment of the posterior fossa. Doppler images may be obtained for screening of the vascular structures. The normal sonographic neonatal cranial anatomy and normal variants are discussed. The most common pathological findings in preterm newborns, such as germinal matrix-intraventricular hemorrhage and periventricular leukomalacia, are described as well as congenital abnormalities such as holoprosencephaly and agenesis of the corpus callosum. New advances in sonographic equipment enable highresolution and three-dimensional images, which facilitate obtaining very accurate measurements of various anatomic structures such as the ventricles, the corpus callosum, and the cerebellar vermis. Limited studies have been performed to predict that longitudinal measurements of these anatomic structures might predict the clinical outcome of high-risk preterm newborns. Hemodynamic Doppler studies may offer the potential for early intervention and treatment to counter the hazards of developmental delay and a moribund clinical outcome.

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confidence: 99%

Neonatal cranial ultrasound: current perspectives

Franco¹,

Lewis²

2013

RMI

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“…A previous study 9 has shown that the 2-D US measurements of the VI and AHW can be made on 3-D US images with reasonable reproducibility and accuracy. While they looked specifically at the AHW and VI, we additionally found reasonable agreement with the TOD between 2-D and 3-D US.…”

Section: Discussionmentioning

confidence: 98%

“…[10][11][12][13][14] Recently, a study found that 2-D measurements can be made using a reconstructed 3-D US image with reasonable interobserver variability and with no significant differences from measurements made on 2-D US images from the same day, 9 and another study has found excellent agreement for the diagnosis of different neonatal pathologies using 3-D US images compared with 2-D US obtained at the same time. 15 Additionally, when directly comparing VV made from 3-D US images and MRI, high-intraclass correlations (ICC) were found (ICC ¼ 0.92) in term born patients with mild ventricle dilation.…”

Section: Introductionmentioning

confidence: 99%

“…This could help explain why there is no consensus image-based standard on when PHVD is occurring at a rate that merits intervention. Previous studies 9,15 have shown that the time per exam is reduced when acquiring a 3-D scan instead of 2-D imaging sets, and the diagnostic accuracy is maintained. Therefore, a 3-D US approach would preserve the ability to obtain the clinical standard set of measurements, while potentially enhancing the ability to determine whether or not a new clinical standard could be developed using 3-D US-based VV estimates.…”

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confidence: 99%

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Preterm neonatal lateral ventricle volume from three-dimensional ultrasound is not strongly correlated to two-dimensional ultrasound measurements

Kishimoto

Ribaupierre²,

Salehi

et al. 2016

J. Med. Imag

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Abstract. The aim of this study is to compare longitudinal two-dimensional (2-D) and three-dimensional (3-D) ultrasound (US) estimates of ventricle size in preterm neonates with posthemorrhagic ventricular dilatation (PHVD) using quantitative measurements of the lateral ventricles. Cranial 2-D US and 3-D US images were acquired from neonatal patients with diagnosed PHVD within 10 min of each other one to two times per week and analyzed offline. Ventricle index, anterior horn width, third ventricle width, and thalamo-occipital distance were measured on the 2-D images and ventricle volume (VV) was measured from 3-D US images. Changes in the measurements between successive image sets were also recorded. No strong correlations were found between VV and 2-D US measurements (R 2 between 0.69 and 0.36). Additionally, weak correlations were found between changes in 2-D US measurements and 3-D US VV (R 2 between 0.13 and 0.02). A trend was found between increasing 2-D US measurements and 3-D US-based VV, but this was not the case when comparing changes between 3-D US VV and 2-D US measurements. If 3-D US-based VV provides a more accurate estimate of ventricle size than 2-D US measurements, moderate-weak correlations with 3-D US suggest that monitoring preterm patients with PHVD using 2-D US measurements alone might not accurately represent whether the ventricles are progressively dilating. A volumetric measure (3-D US or MRI) could be used instead to more accurately represent changes. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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“…New morphometric methodological approaches are effective in capturing reliable information about the shape of an organism and result in powerful statistical procedures for testing differences in shape (Rohlf and Marcus 1993). There is increasing evidence that the improvements of 3D reconstruction methodologies will aid in 3D morphometrics studies (Zollikofer and Ponce de León 2002;Claude et al 2003;Sholts et al 2010;Chiari and * Corresponding author Claude 2011;McLean et al 2012;Ifflaender et al 2013). The actual bio 1 logical materials (specimens) are not linear as used to be visualized in traditional methods, and the modern techniques such as 3D modelling could be more effective in enabling a researcher to visualize differences in shape (Rohlf and Marcus 1993).…”

Section: Introductionmentioning

confidence: 99%

Assessing 3d Photogrammetry Techniques in Craniometrics

Moshobane¹,

Bruyn²,

Bester³

2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Morphometrics (the measurement of morphological features) has been revolutionized by the creation of new techniques to study how organismal shape co-varies with several factors such as ecophenotypy. Ecophenotypy refers to the divergence of phenotypes due to developmental changes induced by local environmental conditions, producing distinct ecophenotypes. None of the techniques hitherto utilized could explicitly address organismal shape in a complete biological form, i.e. threedimensionally. This study investigates the use of the commercial software, Photomodeler Scanner® (PMSc®) threedimensional (3D) modelling software to produce accurate and high-resolution 3D models. Henceforth, the modelling of Subantarctic fur seal (Arctocephalus tropicalis) and Antarctic fur seal (Arctocephalus gazella) skulls which could allow for 3D measurements. Using this method, sixteen accurate 3D skull models were produced and five metrics were determined. The 3D linear measurements were compared to measurements taken manually with a digital caliper. In addition, repetitive measurements were recorded by varying researchers to determine repeatability. To allow for comparison straight line measurements were taken with the software, assuming that close accord with all manually measured features would illustrate the model's accurate replication of reality. Measurements were not significantly different demonstrating that realistic 3D skull models can be successfully produced to provide a consistent basis for craniometrics, with the additional benefit of allowing non-linear measurements if required.

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Measurement of the Lateral Ventricles in the Neonatal Head: Comparison of 2-D and 3-D Techniques

Cited by 18 publications

References 10 publications

Neonatal cranial ultrasound: current perspectives

Neonatal cranial ultrasound: current perspectives

Preterm neonatal lateral ventricle volume from three-dimensional ultrasound is not strongly correlated to two-dimensional ultrasound measurements

Assessing 3d Photogrammetry Techniques in Craniometrics

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