1. A method for producing magnetic resonance images during a medical procedure, the steps comprising: a) acquiring image data with a magnetic resonance imaging system using a pulse sequence with a short TR that enables the prompt acquisition of an image data set; b) reconstructing an image with the acquired image data set; c) transforming the intensities of pixels in the reconstructed image to produce a transformed image that simulates an image reconstructed from image data acquired with a pulse sequence having a TR substantially longer than that used in step a); d) displaying the transformed image; and e) repeating steps a) through d) throughout the medical procedure to continuously update the displayed transformed image.