If you do not have x-rays with you then you may be subject to a health check at the airport. This can delay your journey by a few hours, particularly if there are long queues. To avoid delay, arrange to have a health check and any necessary x-rays in your home country before your departure. It is also useful to bring information on any vaccinations that you have received, as well as any medication that you take regularly. You should carry this documentation in your hand luggage for ease of reference in the event of any queries.