1. A method of navigating an image series, the image series containing a first number of substantially aligned planar images, the method comprising: (a) grouping the images of the image series into a number of subseries, the number of subseries being less than the first number of images; (b) generating a representative image series by generating an image from each subseries; (c) displaying the representative image series; (d) determining whether an image from the representative image series has been selected; and, (e) if an image from the representative image series has been selected, then displaying the subseries associated with the selected image.