In this article, we present 5 cases of uncommon anomalous vertebral arteries and discuss
the possible embryologic etiologies. These cases include a left vertebral artery as the 2nd …

PURPOSE: To determine the rate and clinical outcome of discrepancies in interpretation by
radiology residents and staff neuroradiologists of posttraumatic cranial computed …

BACKGROUND AND PURPOSE: Platybasia, or abnormal obtuseness of the basal angle,
was first measured on plain skull images. At present, evaluation of the brain and skull more …

Anomalies of the vertebral arteries are uncommon, but important to recognize in the diagnosis
and catheter based evaluation and treatment of patients suffering cerebrovascular disease…

The MR imaging features of a paraganglioma of the cauda equina with associated spinal
cord cysts are presented. MR imaging showed the tumor to be isointense with the spinal cord …

Koenigsberg shows how Hitler's thoughts about war generated the Holocaust. While some
view Hitler as an anomaly, Koenigsberg shows how both the Holocaust and two World Wars …

A 61-year-old woman was examined because of unilateral nonpulsatile tinnitus involving
the right ear. CT scanning showed a soft-tissue mass in the hypotypanum. Angiographically, …

We present the CT, MR angiographic, and histologic findings of a rare primary meningeal
melanocytoma of the cavernous sinus. The primary differential diagnosis is between a melanin-…

… Koenigsberg, DO, Department of Radiological Sciences, The Medical College of
Pennsylvania, 3300 Henry Avenue, Philadelphia, PA 19129. Received June 1, 1994; revised …

BACKGROUND AND PURPOSE: In patients with multiple sclerosis (MS), a few preliminary
functional MR (fMR) imaging studies of the visual cortex reveal information about magnitude …