Which is more accurate MRI or PET scan?

Related questions

1. What is FDG activity on PET scan?
2. Is PET scan dangerous?
3. Is PET scan accurate?
4. Do all cancers show up on a PET scan?
5. How soon after radiation can you have a PET scan?
6. Can a PET scan miss cancer?
7. Are PET Scans always accurate?
8. Can PET scan give false negative?
9. Why is FDG used in PET scans?
10. What color is cancer on a PET scan?

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7. #function
8. #injected
9. #organ
10. #blood
11. #positrons
12. #allows
13. #shape
14. #whereas
15. #scans