Benavente-Fernández, IsabelRuiz-González, EstefaníaLubian-Gutiérrez, ManuelLubián-Fernández, Simón PedroCabrales Fontela, YuniorRoca-Cornejo, CristinaOlmo-Duran, PedroLubián-López, Simón Pedro2022-11-022022-11-022021-07-22Benavente-Fernández I, Ruiz-González E, Lubian-Gutiérrez M, Lubián-Fernández SP, Cabrales Fontela Y, Roca-Cornejo C, et al. Ultrasonographic Estimation of Total Brain Volume: 3D Reliability and 2D Estimation. Enabling Routine Estimation During NICU Admission in the Preterm Infant. Front Pediatr. 2021 Jul 22;9:708396http://hdl.handle.net/10668/4321Objectives: The aim of this study is to explore if manually segmented total brain volume (TBV) from 3D ultrasonography (US) is comparable to TBV estimated by magnetic resonance imaging (MRI). We then wanted to test 2D based TBV estimation obtained through three linear axes which would enable monitoring brain growth in the preterm infant during admission. Methods: We included very low birth weight preterm infants admitted to our neonatal intensive care unit (NICU) with normal neuroimaging findings. We measured biparietal diameter, anteroposterior axis, vertical axis from US and MRI and TBV from both MRI and 3D US. We calculated intra- and interobserver agreement within and between techniques using the intraclass correlation coefficient and Bland-Altman methodology. We then developed a multilevel prediction model of TBV based on linear measurements from both US and MRI, compared them and explored how they changed with increasing age. The multilevel prediction model for TBV from linear measures was tested for internal and external validity and we developed a reference table for ease of prediction of TBV. Results: We used measurements obtained from 426 US and 93 MRI scans from 118 patients. We found good intra- and interobserver agreement for all the measurements. US measurements were reliable when compared to MRI, including TBV which achieved excellent agreement with that of MRI [ICC of 0.98 (95% CI 0.96-0.99)]. TBV estimated through 2D measurements of biparietal diameter, anteroposterior axis, and vertical axis was comparable among both techniques. We estimated the population 95% confidence interval for the mean values of biparietal diameter, anteroposterior axis, vertical axis, and total brain volume by post-menstrual age. A TBV prediction table based on the three axes is proposed to enable easy implementation of TBV estimation in routine 2D US during admission in the NICU. Conclusions: US measurements of biparietal diameter, vertical axis, and anteroposterior axis are reliable. TBV segmented through 3D US is comparable to MRI estimated TBV. 2D US accurate estimation of TBV is possible through biparietal diameter, vertical, and anteroposterior axes.enAtribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/3D ultrasonographyPreterm infantLineal measureBrain volumeMagnetic resonance imagingNeonatal intensive care unitNeuroimagingUltrasonografíaUltrasonografía prenatalRecien nacido prematuroEncéfaloImagen por resonancia magnéticaUnidades de cuidado intensivo neonatalNeuroimagenMedical Subject Headings::Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::HumansMedical Subject Headings::Persons::Persons::Age Groups::Infant::Infant, NewbornMedical Subject Headings::Persons::Persons::Age Groups::InfantMedical Subject Headings::Health Care::Health Care Facilities, Manpower, and Services::Health Facilities::Hospital Units::Intensive Care Units::Intensive Care Units, Pediatric::Intensive Care Units, NeonatalMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Diagnostic Errors::Observer VariationMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Statistics as Topic::Confidence IntervalsMedical Subject Headings::Persons::Persons::Age Groups::Infant::Infant, Newborn::Infant, PrematureMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Diagnostic Techniques and Procedures::Diagnostic Imaging::Magnetic Resonance ImagingMedical Subject Headings::Anatomy::Nervous System::Central Nervous System::BrainMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Diagnostic Techniques and Procedures::Diagnostic Imaging::UltrasonographyMedical Subject Headings::Persons::Persons::Age Groups::Infant::Infant, Newborn::Infant, Low Birth Weight::Infant, Very Low Birth WeightMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Diagnostic Techniques and Procedures::Diagnostic Imaging::Neuroimagingresearch article34368031open access10.3389/fped.2021.7083962296-2360PMC8339409