1. An apparatus to produce MRI images with chemical species suppression for a scanned object region, comprising: a MRI scanner for obtaining images of a predetermined volume; a controller configured to control operation of the scanner to acquire images using a modified Dixon technique wherein data acquisition is performed over substantially the entire read gradient of a gradient echo pulse sequence performed by the scanner, to produce a plurality of magnetic resonance imaging data signals; a processing system to process the plurality of MRI data signals using a Dixon reconstruction technique to create a first chemical species image data set and a second chemical species image data set, and an output device for display of the first chemical species and second chemical species images.