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Nardozza LM, Passos AP, Araujo Júnior E, et al. Reference intervals of fetal cisterna magna volume by two-dimensional method using the multiplanar mode of three-dimensional ultrasonography. Radiol Bras. 2014;47(4):201-5doi: 10.1590/0100-3984.2013.1852.
Nardozza, L. M., Passos, A. P., Araujo Júnior, E., Bruns, R. F., & Moron, A. F. (2014). Reference intervals of fetal cisterna magna volume by two-dimensional method using the multiplanar mode of three-dimensional ultrasonography. Radiologia brasileira, 47(4), 201-5. https://doi.org/10.1590/0100-3984.2013.1852
Nardozza, Luciano Marcondes Machado, et al. "Reference intervals of fetal cisterna magna volume by two-dimensional method using the multiplanar mode of three-dimensional ultrasonography." Radiologia brasileira vol. 47,4 (2014): 201-5. doi: https://doi.org/10.1590/0100-3984.2013.1852
Nardozza LM, Passos AP, Araujo Júnior E, Bruns RF, Moron AF. Reference intervals of fetal cisterna magna volume by two-dimensional method using the multiplanar mode of three-dimensional ultrasonography. Radiol Bras. 2014 Jul-Aug;47(4):201-5. doi: 10.1590/0100-3984.2013.1852. PMID: 25741085; PMCID: PMC4337116.
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Radiol Bras. 2014 Jul-Aug;47(4):201-5. doi: 10.1590/0100-3984.2013.1852.

Reference intervals of fetal cisterna magna volume by two-dimensional method using the multiplanar mode of three-dimensional ultrasonography.

Radiologia brasileira

Luciano Marcondes Machado Nardozza, Ana Paula Passos, Edward Araujo Júnior, Rafael Frederico Bruns, Antonio Fernandes Moron

Affiliations

  1. Private Docents, Associate Professors, Obstetrics Department, Escola Paulista de Medicina da Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brazil.
  2. Master, Physician Assistant at Clínica Fetalmed, Curitiba, PR, Brazil.
  3. PhD, Associate Professor, Gynecology and Obstetrics Department, Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil.
  4. Private Docent, Full Professor, Obstetrics Department, Escola Paulista de Medicina da Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brazil.

PMID: 25741085 PMCID: PMC4337116 DOI: 10.1590/0100-3984.2013.1852

Abstract

OBJECTIVE: To establish reference intervals for the fetal cisterna magna volume by means of two-dimensional (2D) method using the multiplanar mode of three-dimensional ultrasonography.

MATERIALS AND METHODS: Cross-sectional study with 224 healthy pregnant women between the 17th and 29th gestational weeks. The volume was automatically obtained by multiplying the three major axes in axial and sagittal planes by the constant 0.52. Polynomial regression was utilized to establish the correlation between fetal cisterna magna volume and gestational age, with adjustments by coefficient of determination (R(2)). Reliability and agreement were obtained by intraclass correlation coefficient (ICC) and limits of agreement, respectively.

RESULTS: Mean fetal cisterna volume with the 2D method ranged from 0.71 ± 0.19 cm(3) to 4.18 ± 0.75 cm(3) at the 17th and 29th weeks, respectively. The authors observed a good correlation between fetal cisterna magna volume and gestational age (R(2) = 0.67), excellent intraobserver reliability and agreement with ICC = 0.89 and limits of agreement 95% (-52.0; 51.8), respectively, and low interobserver reliability and agreement with ICC = 0.64 and limits of agreement 95% (-110.1; 84.6), respectively.

CONCLUSION: Reference intervals for fetal cisterna magna volume by means of 2D method using the multiplanar mode of three-dimensional ultrasonography were established and presented excellent intraobserver reliability and agreement.

Keywords: Cisterna magna; Fetus; Reference intervals; Three-dimensional ultrasonography; Two-dimensional ultrasonography

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