Abstract: The invention provides methods for inhibiting psychostimulant-induced or nicotine-induced craving of additional psychostimulants (e.g., cocaine or amphetamine) or nicotine. In these methods, D1-like antagonists or D1-like agonists are administered to a patient dependent on psychostimulant drugs or nicotine and therefore susceptible to, or suffering from, such a craving. Also disclosed is an animal model system useful for measuring the ability of test compounds to inhibit pyschostimulant-induced or nicotine-induced cravings in humans.

Abstract: Nuclear magnetic resonance apparatus for forming an image representative of a velocity profile of a fluid flowing in a vessel in which the fluid is stimulated to produce a time-dependent magnetic resonance signal, Fourier-transformed data is derived from the time-dependent magnetic resonance signal, the stimulating is done so as to introduce, into a predetermined component of the Fourier-transformed data, spatially-dependent phase information indicative of the velocity profile of the fluid, and the predetermined component is extracted for display as the image representative of the velocity profile.