B. Buchholtz

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Fiber Bragg grating (FBG)-based bandpass filters, while possessing close to ideal sharp rolloff characteristics, can suffer from a significant amount of in-band dispersion. Results concerning the compensation of the in-band dispersion of a typical 100-GHz FBG using two thin-film all-pass filters, each composed of two coupled-cavities packaged in a compact(More)
Total arterialization of the liver appears to be a promising clinical method in preventing or reducing encephalopathy after shunting. A new technique for achieving total arterialization of the liver in rats in described and illustrated. This method is fast, simple, and associated with a high patency rate, even in the hands of relatively inexperienced(More)
Hepatic reticuloendothelial function was measured in 6 experimental groups of rats with various portasystemic shunts or total liver arterialization by computer calculation of the hepatic uptake rate of intravenously injected 99mTc-sulphur colloid. Marked reduction of the hepatic reticuloendothelial system (RES) function was found both 1 and 3 weeks after(More)
Thyroid carcinoma is an uncommon but well described childhood malignancy. Obstructive airway symptoms represent an unusual mode of presentation of this disease in childhood. A 5-year-old child with locally invasive follicular thyroid carcinoma had symptomatic wheezing for one year, thought to be asthma. Extrinsic compressive tumor or transtracheal,(More)
Twenty-three angiographies were performed in 20 rats with a totally arterialized liver. The arterialization was obtained by the construction of an end-to-side portacaval shunt (PCS) and an arteriovenous (AV) fistula between the left gastric artery and the portal stump. Microsurgical technique was necessary because of the small diameter of the AV fistula(More)
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