Abstract: A magnetic resonance imaging receiver/transmitter coil system for providing images for regions of interest includes a first phased array formed of a plurality of electrically conductive members and defining an array volume and a second phased array formed of a second plurality of electrically conductive members and disposed at least partially within the defined array volume. At least one of the first and second phased arrays is adapted to apply a magnetic field to the defined array volume. At least one of the first and second phased arrays is further adapted to receive said applied magnetic field. The first phased array is extendible to define a further array volume and is provided with a switch for electrically coupling and decoupling an extension to effectively extend the length of the first phased array and thereby define the further array volume. In this manner the length of the first phased array is effectively extended to approximately twice its unextended length.

Abstract: A method for computing, in a computer with a television terminal, spatially transformed locations for samples in three-dimensional image space, of which a two-dimensional view is afforded on the television terminal. The spatial transformation of sample locations allows objects to be rotated, precessed or translated on the viewing screen of the television terminal. The original locations of samples are considered to be along a path in image space proceeding from a starting point sample. A spatial transform of the starting point is computed. The successive vector differences between successive samples along the path are determined, and the various values of these vector differences are spatially transformed. Spatially transformed samples are successively generated along the spatially transformed path in image space by successively adding the spatially transformed vector differences to the spatially transformed starting point sample, in an accumulation procedure.