1. Natural course and management risks of Unruptured Intracranial Aneurysms UCAS Japan Interim report
2. Cerebral aneurysms treated in Japan
3. Evidence level: Oxford Center for EBM
4. Evidence
5. Natural course of UCA
6. Current status
7. Goals
8. UCAS Japan basic principle
9. Method
10. Inclusion criteria
11. Diagnostic criteria
12. Follow-up protocol
13. End of the study
14. Interim report
15. Regional Entryiper 100,000populationj
16. UCAS Japan registry status
17. Aneurysms with any follow-up and m-Rankin scale at presentation 0,1
18. Reason for imaging
19. Location of Aneurysm
20. Size of aneurysm
21. Initial management plan
22. Cohort
23. Management : Cases with Rankin=0,1
24. Future
25. Limitation of this study
26. UCAS II : Objectives Prospective QOL and Cost-effectiveness analysis on UCAs
27. Study centers
28. UCAS II Registered cases: Nov. 2007
29. Conclusions