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Updated: Apr 10, 2026

Analysis of Tubular Membrane Networks in Cardiac Myocytes from Atria and Ventricles

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Published on: October 15, 2014

Lamina terminalis: Radiological analysis with a proposed anatomical classification.

Samer S Hoz¹, Mostafa H Algabri², Sheikh Ozair Nissar³

¹Department of Neurosurgery, University of Cincinnati, Cincinnati, Ohio, United States.

Surgical Neurology International

|April 9, 2026

Summary

This summary is machine-generated.

The lamina terminalis (LT) shows significant individual variability in its dimensions and angulation. This angulation is linked to the optic chiasm position, offering crucial insights for neurosurgery.

Keywords:

AC–PC line Anterior communicating artery Lamina terminalis Optic chiasm Third ventricle

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Area of Science:

Neurosurgery
Radiology
Neuroanatomy

Background:

The lamina terminalis (LT) is a critical anatomical landmark in neurosurgery, forming the anterior wall of the third ventricle.
Radiological characterization of the LT is limited, hindering its clinical application.

Purpose of the Study:

To evaluate the radiological dimensions of the lamina terminalis (LT).
To propose a novel classification system for LT angulation.
To investigate associations between LT morphology and optic chiasm position.

Main Methods:

Retrospective analysis of 160 adult brain MRIs (1.5 Tesla).
Measurements included LT length, width, angle, LT-AComA distance, and optic chiasm position.
Two blinded observers performed measurements; SPSS v25.0 used for analysis (P < 0.05).

Main Results:

The LT exhibited a mean length of 10.7 mm and width of 3.75 mm.
A novel LT angulation classification (Type 1: <100°, Type 2: 100°-110°, Type 3: >110°) was proposed; Type 2 was most common (47.5%).
LT angulation showed a significant association with optic chiasm position (P=0.015).

Conclusions:

The lamina terminalis (LT) is morphologically diverse with significant individual variability in its radiological parameters.
LT angulation variations are significantly associated with optic chiasm position.
These findings provide valuable anatomical insights for neurosurgical planning and interventions.