There is information on CT scans on this page . It does mention there that it can take 1 to 2 weeks to receive your results so give it another week and if you haven't heard back, you could try and give them a call to find out more. I don't think you can read anything - good or bad - into the fact that you haven't received your results yet, but fingers crossed you won't have to wait much longer now!
Keep us updated if you get a chance on what you find out. I hope everything turns out to be fine for you.
