I get the idea of why you would want your liver smaller before the surgery, because it would make it easier for the surgeon, etc. But how do they decide that yours is too big/enlarged and you need to be on liquids days or weeks before your surgery? Is there a test or xray that they use to see how big it is? I plan to have my band in the next two months. I am self pay and have no health issues, except that I'm overweight.