Kgs. Lyngby, Denmark
- Type
- 25
- Procedure
- neg-wo-call
- Ref. number
- 561640-2025
- Estimated value
- 129,967 EUR
- CPV
- 38520000
DTU needs to purchase a uniaxial resonant head insert gradient coil for animal and human magnetic resonance imaging (MRI), particularly for hydrogen and hyperpolarized carbon-13 MRI. We aim for 3D mapping of brain metabo…
lites with a time resolution of around a second for calculation of metabolic rates. This requires gradient performance exceeding that of clinical scanners. To drive the gradient coil at the needed slew rate and current with an MRI gradient amplifier, it needs to be resonant, so it amplifies the outp
ut at specific frequencies multi-fold. An integrated capacitor bank is needed to make the coil resonant at around 10 kHz for carbon-13, and 20 kHz for hydrogen to make the data acquisition quiet for fMRI (Versteeg et al, Magn Reson Med. 202