الفهرس 
INTRODUCTION AND AIM OF THE WORKOnly 14 pages are availabe for public view
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Abstract
The posterior cranial fossa has been considered for time as a challenge for invasive radiological procedures. The introduction of computed tomography was a historical turn point in the diagnosis, and follow-up of the brain lesions; this is particularly true regarding the posterior fossa lesions. This study included 245 patients with posterior fossa lesions. The patients were selected on the basis of the presence of CT evidence of posterior fossa lesions. Thourough clinical examination and computed tomographic study were done for each patient. Transfemoral vertebral angiography was done in 23 patients, external carotid angiography in a single patient, plain radiography of the skull in five patients and MR imaging in one patient.