Neuroradiology

This is the second in a series of short reviews of internet-based radiological educational resources, and will focus on neuroradiology. Most of the sites cater for medical students and trainee or non-specialist radiologists, but may also be of interest to specialists, especially for use in teaching. Hyperlinks are available in the electronic version of this article and were all active at the time of going to press (August 2005). If your computer has high-level internet security settings or does not accept cookies, you may not be able to access all of the sites listed; this may be the case on some hospital-based systems. All websites should be fully accessible from other computers with less stringent security settings, e.g. a PC at home.     

Neuroradiology of the immunosuppressed state.

In recent years, one of the most common reasons for neuroimaging has become the evaluation of the immunosuppressed patient. In this review the radiographic appearances of the common inflammatory and neoplastic conditions affecting the central nervous system in patients with HIV infection, as well as the AIDS-dementia complex, are discussed. Non-AIDS immunocompromised neurologic disease is also examined, with particular emphasis on the effect of various immunosuppressive medications on the brain and spine.     

Neuroradiology of the sphenoidal region.

The neuroradiological techniques employed in diagnosing a series of 54 lesions involving the superior orbital fissure and cavernous sinus (sphenoidal region) were reviewed in order to compare the value of sphenoidal tomography, pneumoencephalography, cerebral arteriography and sphenoidal venography. The patients included in the series exhibited clinical syndromes of sphenoidal region cranial nerve deficits. Confirmation of the sphenoidal region disorder was obtained in all cases. Of the four procedures, sphenoidal venography and basal tomography yielded the highest rate of positive studies.