You can create 10 axes on a panel or straight on the figure.
Then show the first 10 by default. When you click next replace the 'CData' property of the images with the 11-20th images and so on. Alternatively you can just make sure the 'hold' property of the axes are off and do a full replot for the 11th to 20th images.
Changing the 'CData' is generally quicker, but you have to keep hold of the 10 image handles and there may be other properties that need to change for a new image which make it easier to just replot instead.
