Preoperative MRI/MRA for microvascular decompression in trigeminal neuralgia: consecutive series of 67 patients.

Background: Microvascular decompression is an accepted treatment for primary trigeminal neuralgia. In recent years, efforts have been made to investigate the role of preoperative MRI/MRA in selecting patients with neurovascular compression.

Methods: Ninety-two consecutive patients underwent a standard retrosigmoid craniotomy for microvascular decompression between 2005 and 2009, of whom 67 had a preoperative MRI and MRA according to the protocol of our department.