With chemical-exchange sensitive imaging, increasing field narrows the linewidth of magnetization transfer effects and shifts relative exchange rates (exchange rate vs. chemical shift) toward a slower exchange regime. This study is intended to explore the interplay of contrast mechanisms and sensitivity benefits by comparing phantom and in-vivo data acquired at the fields of 9.4T and 15.2T. The linewidth narrowing effect between the fields is demonstrated in agar phantoms with nicotinamide as well as spectra from the rat cortex. Spectra taken at higher power shows increase of sensitivity by shifting toward a slower exchange regime.
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