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Beginning with a case report of nitrous oxide (N₂O)-induced B₁₂ deficiency myelopathy, this article reviews the clinical biochemistry of vitamin B₁₂, and examines the pathogenetic mechanisms by which B₁₂ deficiency leads to neurologic damage, and how this damage is potentiated by N₂O exposure. The article systematically examines the available experimental(More)
  • Leith Hathout
  • 2012
This commentary examines the incursion on the neutrality of medical personnel now taking place as part of the human rights crises in Bahrain and Syria, and the ethical dilemmas which these incursions place not only in front of physicians practicing in those nations, but in front of the international community as a whole.In Bahrain, physicians have recently(More)
Standard therapy for glioblastoma (GBM) includes maximal surgical resection and radiation therapy. While it is established that radiation therapy provides the greatest survival benefit of standard treatment modalities, the impact of the extent of surgical resection (EOR) on patient outcome remains highly controversial. While some studies describe no(More)
Advanced liver disease has long been associated with cerebral abnormalities. These abnormalities, termed acquired hepatocerebral degeneration, are typically visualized as T1 weighted hyperintensity on MRI in the deep gray matter of the basal ganglia. Recent reports, however, have demonstrated that a subset of patients with chronic alcoholic liver disease(More)
Although vascular tortuosity is a ubiquitous phenomenon, almost no mathematical models exist to describe its shape. Given that the shape of tortuous vessel curves seems fairly uniform across orders of magnitude of vessel size and across vast differences in anatomic substrata, it is hypothesized that the shape of tortuosity is not purely random but rather is(More)
¾Material handling robots are routinely used for transferring parts in an interconnected multi-machine cell. The sequence of robot movements between machines is arrived at by the operator, either intuitively or by the use of some form of off-line analysis. It would be extremely beneficial if robots can be provided with additional intelligence to(More)
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