All resonances in human brain 31P MR spectra detectable at 7T and higher can also be detected at 3T provided that 1H decoupling, 1H-31P NOE and a 31P receive-array are used. This includes a alkaline peak for extracellular Pi and peaks assigned to UDPG. A NAD+/NADH redox state similar to that reported at 7T was observed. A comparison of measured T1 values with those reported at different field strengths and NOEs measured at 3 and 7T indicates that CSA is not dominant in 31P relaxation and hence there is no sensitivity benefit from shorter T1s at higher fields.
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