OBJECTIVE To evaluate the impact of an emergency department (ED) automatic preauthorization policy on after-hours utilization of neuroradiology computed tomography (CT). METHODS All CT studies of the head with contrast facial bones, orbits, spine, and neck requested through the ED and performed between January 1, 2004, and December 31, 2010, were reviewed. The preauthorization policy was inst...

Received March 26, 2012; final revision received June 3, 2012; accepted June 18, 2012. From the Neurovascular & Neuroradiology Research Unit, Nuffield Department of Surgical Sciences (A.M., A.C., M.S.) and the Department of Clinical Neurology (Z.M.), University of Oxford, Oxford, UK; the Department of Neuroradiology, Royal Hallamshire Hospital, Sheffield, UK (S.C.); the Department of Radiology,...

introduction spinal tumours may be classified in three groups: 1) extradural, 2) intradural extramedullary and 3) intramedullary spinal cord tumours. intradural extramedullary tumours arise from the leptomeninges or nerve roots and include schwannomas. a schwannoma is usually a firm grey-whitish tumour growing near a nerve trunk or ramus. it can be separated from the nerve without damaging neur...

BACKGROUND AND PURPOSE Neuroendovascular surgery/interventional neuroradiology is a relatively new subspecialty that has been evolving since the mid-1970s. During the past 2 decades, significant advances have been made in this field of minimally invasive therapy for the treatment of intracranial cerebral aneurysms; acute stroke therapy intervention; cerebral arteriovenous malformations; carotid...

There have been rapid and significant advances in diagnostic and interventional radiology, including interventional neuroradiology, in recent years. Many intracranial vascular pathologies are being successfully managed by endovascular interventional neuroradiology techniques. These techniques include procedures like embolization of vascular tumours and arterio-venous malformations, coiling of c...

In our clinical practice and teachings of neuroradiology, we usually focus on the ‘‘here and now’’, not the historical underpinnings. As Albert Lyons states in the introduction to his book on the history of medicine, ‘‘the student, practitioner, and public marvel at the contemporary medical scene, with its enlarged scientific understanding, remarkable diagnostic tools, effective therapeutic met...