Download Imaging of Orbital and Visual Pathway Pathology (Medical by Wibke S. Müller-Forell, N. Pfeiffer, K.. Sartor, E. PDF

By Wibke S. Müller-Forell, N. Pfeiffer, K.. Sartor, E. Boltshauser, S. Kollias, W. Lieb, E. Martin, W.S. Müller-Forell, S. Pitz, U. Schwarz, W. Wichmann

This is often one of many first books to accommodate imaging of pathology of the total visible procedure. it truly is divided into components, common and specific. within the basic half, an important fundamentals of recent imaging tools are mentioned, yet with much less emphasis at the actual heritage than in basically neuro-/radiological textbooks. Chapters are dedicated to the meticulous presentation of imaging anatomy of the orbit and intracranial visible pathway. the newest wisdom at the indication, approach, and result of practical MR imaging is gifted. visible process impairment within the pediatric age team can be mentioned. The specified a part of the publication offers certain descriptions of the indications and scientific and imaging findings in person sufferers with orbital and intracranial pathologies. This ebook is in particular designed to be of price not just to neuroradiologists but additionally to ophthalmologists, neurosurgeons, oto-/rhino-laryngologists, and neurologists who require extra unique info on those certain ailments.

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A Coronal CT at the level of the posterior globe. 16 = intermuscular septum. c Corresponding bone window. 7 c d Fig. a Coronal CT at the region anterior orbit. 15 = lacrimal gland. c Corresponding bone window. 2 Optic Nerve Sheath and Fasciae (Figs. 27) The orbit is lined by a periosteal layer, the socalled periorbita, which is loosely adherent to the bone. Anteriorly, the periorbita blends with the periosteum of the orbital margin and to the orbital septum, while in the posterior region it fuses with the dural sheath of the optic nerve to form a unique sheet, the dura of the optic canal, which is tightly adherent to the bone.

V. administration of gadolinium also has to be combined with a fat signal suppression to avoid the contrast canceling interference of contrast-enhanced structures and the naturally high signal of healthy fat. , multiplanar and curved (along the optic nerves) reformations, and also an equalization of primary nonsymmetrical patient positioning. However, one should realize that sequences used for 3D acquisition mostly have disadvantages, such as reduced internal contrast (fast spin-echo with long echo train) or susceptibility artifacts (gradient-echo sequences).

1996). Behind the sagittal stratum, the myelinated fibers of the optic radiation bend medially to project on the visual cortical field and diverge in a fan-like manner, no longer depicted on MRI as the fibers are looser than the optic radiation. Fig. a Axial T2-weighted view of the brain at the level of the internal capsule. 6 b 56 W. Wichmann and W. 3 b Fig. a Axial PD-weighted view of the optic radiation some millimeters above Fig. 45. 14 = fornix contralateral visual field shows its representation below the horizontal meridian.

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