Should you drink water before DEXA?

I'm curious to know, should someone consume water prior to undergoing a DEXA scan? Is it necessary for the accuracy of the results, or is it simply a matter of comfort and hydration? I've heard conflicting opinions on the matter, and I'm interested in your professional opinion as a practitioner in the field of healthcare. Can drinking water before a DEXA scan impact the test's ability to accurately measure bone density, or is it a harmless precaution that patients can take to ensure they're well-hydrated during the procedure?