PLEASE DONT
Whole body imaging is not a good idea - the risks exceed the benefit. In fact, most health screening is dubious. Your GP will check your urine for diabetes, your blood pressure and other things done on an aviation medical but this is all you need! Calcium scoring for people with increased risk of heart disease and virtual colonography over 50 may identify the risk of caoronary artery disease and pick up early bowel cancer, but these are available in the UK
So go and have a holiday and stop worrying - otherwise you will be another case of a false positive - I see them from time to time on my intensive care unit - healthy people that got tested until something was found.