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Anatomy of the Brain: Ventricles

Anatomy of the Brain: Ventricles

There are hollow fluid-filled cavities known as ventricles deep inside the human brain. There are two lateral ventricles, one in each cerebral hemisphere, and each has three different projections — the anterior, inferior, and posterior horns visible from the lateral side. A thin membrane called the septum pellucidum separates the two lateral ventricles. The slender third ventricle in the diencephalon is connected to each lateral ventricle via a channel called the interventricular foramen.

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Modeling Neonatal Intraventricular Hemorrhage Through Intraventricular Injection of Hemoglobin

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Does the Head Position Affect Neonatal Lateral Ventricular Volume?

Priyanka Roy^1,2, Marcus Lo³, Soume Bhattacharya⁴

¹Department of Medical Biophysics, University of Western Ontario, London, Ontario, Canada.

American Journal of Perinatology

|December 29, 2020

Summary

This summary is machine-generated.

Neonatal head positioning does not significantly alter lateral ventricular volumes. Three-dimensional ultrasound (3D US) measurements in preterm infants showed no volume changes after 30 minutes in lateral decubitus positions.

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Area of Science:

Neonatal imaging and neurodevelopmental studies.
Medical ultrasonography and image analysis.
Pediatric neurology and critical care.

Background:

Lateral ventricular volume is a key indicator of brain development and health in neonates.
Understanding factors influencing ventricular size is crucial for monitoring preterm infants.
Previous studies have suggested potential posture-related changes in neonatal anatomy.

Purpose of the Study:

To investigate if neonatal posture (right vs. left lateral decubitus) affects lateral ventricular volumes.
To assess the impact of short-term (30-minute) postural changes on ventricular size.
To determine the reliability of three-dimensional ultrasound (3D US) in measuring these subtle volumetric differences.

Main Methods:

Prospective analysis of 24 preterm neonates at Victoria Hospital, London, Ontario.
Utilized three-dimensional ultrasound (3D US) to measure lateral ventricular volumes.
Compared ventricular volumes in right and left lateral decubitus positions, including a cohort with 30-minute positional changes.

Main Results:

No statistically significant differences were found in lateral ventricular volumes based on the neonate's posture.
Mean ventricular volumes showed variability but were not consistently altered by 30 minutes in either lateral decubitus position.
The study did not demonstrate a posture-dependent effect on neonatal ventricular volumes within the tested timeframe.

Conclusions:

Maintaining a lateral decubitus position for 30 minutes does not significantly impact lateral ventricular volumes in neonates.
Three-dimensional ultrasound is capable of measuring neonatal ventricular volumes, but posture changes within this duration do not induce measurable volume shifts.
Further research may explore longer postural durations or different influencing factors on neonatal ventricular morphology.