Neuroradiologic Imaging

U. Ernemann and T. Nagele

It is the intended purpose of this chapter to provide the practicing ophthalmologist with an understanding of the indications for neuroradiologic procedures, and to illustrate the various imaging methods with typical examples and descriptions of their findings.

Conventional Radiologic Diagnosis

The use of conventional radiologic imaging in ophthalmology has been reduced to its role in the detection of metallic foreign bodies; for a more detailed study of soft tissues, tomographic images have completely replaced them.

Tomographic Imaging

Knowledge of the anatomic planes in which the results are depicted is a primary requirement for understanding the use of modern tomographic imaging techniques. The three principal tomographic planes are orthogonally arranged as depicted in ■ Fig. 20.1: The coronal and sagittal planes are oriented along the same planes defined by the skull sutures of the same names. (The plane of the sagittal suture bisects the two halves of the skull, while the coronal suture lies in the dividing plane between the frontal and parietal bones). The transaxial plane is orthogonal to the first two and lies athwart the long axis of the body in an orientation described as "parallel to the hat brim."

Computed Tomography

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