We retrospectively reviewed the MR examinations of 20 patients with surgically documented
sequestered lumbar disks (free fragments). Sixteen of 20 cases demonstrated extradural …

of the intervertebra! disk complex begins early in life and is a consequence of a van-ety of
environmental factors as well as normal aging. The pathophysiolo-gy of this disorder is …

Background and Purpose— The current report details our initial periprocedural experience
with Wingspan (Boston Scientific/Target), the first self-expanding stent system designed for …

OBJECTIVE: Intradural pseudoaneurysms have a malignant natural history and can be difficult
to treat if parent vessel deconstruction is not feasible. These lesions often involve a long …

Vertebral hemangiomas, unlike most bone lesions, show increased signal on T1- and T2-weighted
magnetic resonance (MR) images. To define the basis for these signal characteristics…

OBJECTIVE: Wingspan (Boston Scientific, Fremont, CA) is a self-expanding stent designed
specifically for the treatment of symptomatic intracranial atheromatous disease. The current …

OBJECTIVE: Spinal dural arteriovenous fistulae (Type I spinal AVMs) are the most common
type of spinal vascular malformations. The optimal treatment strategy has yet to be defined, …

Wide-necked bifurcation aneurysms remain a formidable challenge to the neuroendovascular
surgeon. A 36-year-old woman with a wide-necked basilar bifurcation aneurysm was …

OBJECTIVE: Delayed in-stent stenosis is an important and well characterized complication
of angioplasty and stenting for the treatment of intra-and extra-cranial atheromatous disease. …

This study was designed to test the accuracy of magnetic resonance (MR) imaging with a
FLASH (fast low-angle shot) 40 degrees volume pulse sequence by comparing it with …