Thank you for your help,I went for another scan the next day and it went great!
Usually there is at least a 90 min. wait between the injection and a test run and the actual scan. You didn't mention this but I'm sure you experienced this wait and drank a lot of water and emptied your bladder during the 90 min. wait. The only possibility I can think of is that the material was not injected into a vein but into the surrounding tissue. I hope you were re-scheduled for another scan in the near future. Regards .....