[Neonatal hydrocephalus-volume determinations using computed tomography]

Area of Science:

• Medical Imaging
• Pediatric Neurology
• Neurosurgery

Background:

• Estimating in vivo volumes noninvasively is crucial for diagnosing conditions like hydrocephalus.
• Computed tomography (CT) presents a promising method for accurate volume assessment.
• Neonatal brain development and volumetric changes require precise measurement techniques.

Purpose of the Study:

• To evaluate the accuracy of CT scans in measuring in vivo cranial volumes.
• To compare intracranial and ventricular volumes between hydrocephalic and non-hydrocephalic neonates.
• To establish volumetric differences indicative of hydrocephalus in infants.

Main Methods:

• Utilized contiguous 5 and 10-mm thick CT scans of phantom and neonatal crania.
• Calculated cross-sectional areas and determined volumes using the summation-of-areas technique.
• Applied an indirect intracranial volume measurement technique for comparative analysis.

Main Results:

• Hydrocephalic neonates (head circumference >39 cm) exhibited 1.97 times larger intracranial volumes than controls.
• The ratio of lateral ventricle to intracranial volume was significantly higher in hydrocephalic infants (0.57 ± 0.2) versus controls (0.0062 ± 0.001).
• Statistical analysis confirmed a significant difference (p < 0.005) between groups.

Conclusions:

• CT-based volumetric analysis is a reliable method for assessing neonatal intracranial and ventricular volumes.
• Significant volumetric discrepancies identified in hydrocephalic neonates highlight the utility of CT in diagnosis.
• This technique aids in quantifying the extent of brain abnormalities in pediatric hydrocephalus.