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Related Experiment Videos

Orbital apex: correlative anatomic and CT study.

D L Daniels, P Pech, M C Kay

    AJR. American Journal of Roentgenology
    |December 1, 1985
    PubMed
    Summary
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    This study details the coronal anatomy of the orbital apex using CT scans and cryomicrotomy. Findings aid in identifying orbital apex tumors by visualizing key neurovascular structures.

    Area of Science:

    • Radiology
    • Anatomy
    • Ophthalmology

    Background:

    • The orbital apex is a complex anatomical region crucial for vision and ocular motility.
    • Accurate visualization of the orbital apex is essential for diagnosing and managing space-occupying lesions.

    Purpose of the Study:

    • To correlate coronal computed tomography (CT) findings with cryomicrotomic sections of the orbital apex.
    • To delineate the CT appearance of critical structures within the orbital apex and superior orbital fissure.
    • To illustrate the clinical application of these anatomical landmarks in orbital apex tumor evaluation.

    Main Methods:

    • Coronal CT scans (GE 9800) were performed on cadaveric orbital apex specimens.
    • Cryomicrotomic sections were obtained from the same specimens for direct anatomical correlation.

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  • Clinical CT studies were reviewed to demonstrate the application of identified landmarks.

    • Main Results:

    • Detailed CT characteristics of the optic nerve, anulus of Zinn, and cranial nerves III-VI at the orbital apex and superior orbital fissure were established.
    • Correlation between CT imaging and cryomicrotomic anatomy confirmed the precise localization of these structures.
    • Specific anatomical landmarks were identified for practical use in clinical settings.

    Conclusions:

    • Coronal CT provides detailed visualization of the orbital apex anatomy.
    • Understanding these CT-anatomic correlations is vital for accurate diagnosis of orbital apex pathologies.
    • The identified landmarks facilitate the evaluation and surgical planning for orbital apex tumors.