In BOLD-MRI studies, cuff compression was often used to establish the ischemia-reactive hyperemia model of calf muscle.We found some BOLD signals did not decrease during ischemia, but increased or stay the same.This study was to find the reasons why BOLD signal showed multiple trends in ischemic period and to optimize the ischemia model. BOLD scan was performed on volunteers under two cuff pressures.BOLD signals of all muscles showed a downward trend in the P1 model of partly reduced blood supply. However, in P2 model of blood supply blocked completely, BOLD signals had mostly gone up during ischemia ,unexpectedly.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords