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Results from an experimental antenna array that is processed adaptively to cancel external radio-frequency interference are presented. The eight-element array has been tested in a far-field anechoic chamber. The adaptive beamformer rejects sidelobe and main-lobe interference by up to 37 dB. A conventional Fourier beamformer rejects interference only in the(More)
Diamine oxidase in vaginal effluent is used as a parameter for ascertaining the state of fetal membranes. A new method using tritiated putrescine as a substrate is described for the determination of diamine oxidase in amniotic fluid and vaginal effluents. A number of tests are used for the diagnosis of premature rupture of fetal membranes. The described(More)
The design and construction of a dedicated RF coil setup for human brain imaging ((1)H) and spectroscopy ((31)P) at ultra-high magnetic field strength (7 T) is presented. The setup is optimized for signal handling at the resonance frequencies for (1)H (297.2 MHz) and (31)P (120.3 MHz). It consists of an eight-channel (1)H transmit-receive head coil with(More)
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