Simple Implementation of an Inductively Coupled Synthetic Signal Injection Method on a Clinical MR Scanner for Absolute Quantification

Donghoon Lee¹, Kenneth Marro¹, Eric Shankland¹, Mark Mathis¹, Timothy Wilbur¹, Gregory Wilson^1,2, Jeff Stevenson¹, Cecil Hayes¹, Kenneth Maravilla¹

We report a simple way to implement an artificial signal injection method for absolute quantification on a clinical MR scanner. All injector RF components were placed in a shielded box that was isolated from the MR scanner circuitry so no hardware/software modifications were required for the implementation. We used the implemented injection device to acquire in vivo human muscle 31P MRS with a pseudo-signal acquired simultaneously. This approach is easy to implement with low cost hardware, making it attractive to a broad range of clinical and research MR sites.