Coexistence of schizencephaly and intracranial arteriovenous malformation in an infant

A 9-month-old infant had unilateral closed-lip schizencephaly in the right parietal lobe, which coexisted with an arteriovenous malformation in the nearby temporal area. Cranial MR showed a right parietal cleft lined with gray matter between the right lateral ventricle and the subarachnoid space, and cluster hypointensities throughout the right temporal lobe. Cerebral angiography revealed a right temporal arteriovenous malformation with feeding arteries arising from the right middle and posterior cerebral arteries and draining into the right sigmoid sinus via the engorged vein of Labbé.     

The use of novel PtSi thin film structures in preferential sputtering measurements

The yields of silicon and platinum from the argon sputtering of PtSi films were measured by Rutherford backscattering techniques. Novel thin film structures of Al₂O₃ (substrate)/W/PtSi were employed to facilitate the measurements. Before steady state was reached, more silicon than platinum was sputtered off, in good agreement with platinum enrichment measurements in the sputtered samples. At steady state the silicon and platinum sputtering yields were equal.