الفهرس 
Anatomy of Trigeminal nerveOnly 14 pages are availabe for public view
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Abstract
Summary Conclusion Trigeminal neuralgia remains a severe neurologic disorder manifested as severe unilateral facial pain along with the distribution of the trigeminal nerve. Although there are no specific clinical tests for diagnosing trigeminal neuralgia, MRI stands as an excellent imaging modality for diagnosing the aetiology of this disorder. 3D FIESTA MRI act as adjuvant to conventional MRI in increasing diagnostic accuracy and detection of neurovascular compression. Other than neurovascular compression, MRI also is used in ruling out other causes of trigeminal neuralgia such as cerebellopontine angle lesions and demyelinating or inflammatory conditions. This study included 30 patients with different causes of trigeminal neuralgia. Their ages ranged from (5 years to 65 years) with mean age = 46.23 years. Females were more commonly affected than males (53.3%: 46.7%). The commonest affected side was the left side (46.7%) followed by the right one (40%), while bilateral affection was seen in (13.3%) of cases. According to aetiological factor, trigeminal neuralgia was secondary to underlying pathology in 24 cases (80%), while idiopathic trigeminal neuralgia with no underlying pathology was found in 6 cases (20%). Neurovascular compression and neoplastic lesions had the higher incidence The most affected segment of the trigeminal nerve was the cisternal segment that was involved in 15 cases out of 24 cases with abnormal MR