The hypointense MCA sign

Pearls & oy-sters: hyperdense or pseudohyperdense MCA sign: a Damocles sword?

• The presence of a true hyperdense sign can be confirmed by measuring attenuation value as compared to the normal-appearing contralateral side. • Mimics of a hyperdense sign (i.e., a pseudohyperdense sign) include vascular calcification, raised hematocrit, and intravenous contrast medium. • Careful attention should also be paid to the surrounding brain parenchyma to assess for hypodensity or a...

MCA Symposium on Perezhivanie

Articles Translating Perezhivanie into English Andy Blunden ........................................................................................................... 4 Vygotsky and Vasilyuk on Perezhivanie: Two Notions and One Word Marc Clarà .............................................................................................................. 13 Perezhivaniya as a means of creating t...

Effect of STA-MCA anastomosis on the course of experimental acute MCA embolic occlusion.

The experiments in this report were designed to evaluate the effect of superficial temporal-middle cerebral artery (STA-MCA) anastomosis on the course of middle cerebral artery (MCA) occlusion by emboli while avoiding a vessel clipping technique as well as the use of long-acting barbiturate anesthesia. Dogs were divided into 3 general groups: A) embolus placement 1 h following anastomosis; B) e...

The hemodynamic effect of STA-MCA bypass.

rCBF was measured by 133Xenon inhalation at rest and during pCO2 manipulation in 19 patients prior to and at various times after STA-MCA bypass surgery. The resting flow increased gradually postoperatively, seemingly more due to progressive clinical recovery from the original neurologic disability than due to the surgical intervention. CO2 reactivity increased in some patients, more in those wh...

Trauma or Tumor? The Nail Splay Sign