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(RadioGraphics. 1983;3:400-449.)
© RSNA, 1983

Direct multiplanar computed tomography of the petrous bone

Frans W. Zonneveld 1, Paul F. G. M. van Waes M.D.2, Henk Damsma M.D.2, Pierre Rabischong M.D.3, and Jacqueline Vignaud M.D.4

1 From Philips Medical Systems Division, Eindhoven, The Netherlands.
2 From the University Hospital, Utrecht, The Netherlands.
3 From I.N.S.E.R.M. Unité de Recherches Bio-Méchaniques, Montpellier, France.
4 From Fondation Ophthalmologique A. de Rothschild, Paris, France.

A technique has been presented that combines high resolution CT with flexibility in patient positioning and makes possible direct imaging of the petrous bone in the majority of known otoradiologic planes. A new plane called the semilongitudinal plane, which appears to be useful for imaging the cochlea, the external auditory meatus and the surgical approaches to the middle ear has been introduced. With this technique, it is possible to optimize the visualization of both bone and soft tissue details in the temporal bone without making use of multiplanar reconstruction techniques, which degrade image quality. Thus, the technique described facilitates the identification of normal and pathologic anatomy.

Index Terms: Temporal bone • computed tomography • Computed tomography • instrumentation • technique






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