Magnetic resonance brain imaging in patients with visual vertigo.

Introduction: Patients with visual vertigo (VV) report dizziness provoked by moving visual surroundings. It has been suggested that these subjects develop a compensation strategy for a vestibulo-proprioceptive deficit and rely excessively on visual input. We have postulated that patients with VV might have brain abnormalities that interfere with appropriate processing of visual stimulation and performed a brain MRI study to verify this hypothesis.

Detection of anomalous vertebral arteries by ultrasound as an alternative to radiological methods.

In order to examine 'ultrasound' approach in detecting the course of the vertebral artery (VA) and its anomalies important for neck surgery. An observational study with retrospective analysis of ultrasound images. 500 VAs on 250 3D CT angiographies and 500 ultrasound images performed on the same set of patients were analyzed.

Importance of preoperative detection of vertebral artery anomalies in neck surgery.

Objectives: The objective of this study were to examine the course of the vertebral artery (VA) and define VA anomalies important for neck surgery using three-dimensional computer tomography (3D CT).

Study Design: Thee design used was an observational study with retrospective 3D CT angiography analysis.

Methods: Four hundred VAs depicted on 200 3D CT angiographies were analysed to determine the relationship between the extraosseous portions of the VA to the neck organs, with special emphasis on the thyroid gland area, the artery of origin of the VA and the entrance/exit locations of its foraminal segment.