Current Status of MRM
Although MRI is very common for medical applications, MRM is still developing in laboratories up to field strengths of 1000 MHz. The major barriers for practical MRM include:
- Magnetic field gradient: High gradient focus of magnetic resonance in a smaller volume (smaller point spread function), results in a better spatial resolution. The gradients for MRM are typically 50 to 100 times those of clinical systems. However, the construction of radio frequency (RF) coils used in MRM does not allow ultrahigh gradients.
- Sensitivity: Because the voxels for MRM can be 1/100,000 of those in MRI, the signal is proportionately weaker.
Read more about this topic: Magnetic Resonance Microscopy
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