Delivery of Gradient Coil for human magnetic resonance imaging
Ordregiver: Danmarks Tekniske Universitet - DTU
- Offentliggjort
- 28 august 2025
- Anslået værdi
- 129.967 kr
- Procedure
- Udbud med forhandling
- Delkontrakter
- 1
- Bekendtgørelsesnummer
- 00561640-2025-01
- Reference
- 34152a87-f7a2-43e2-ae7d-172a1a32a57b
- Officiel kilde
- Officiel kilde
CPV-koder
- 38520000Scannere
Beskrivelse
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 metabolites 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 output 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. 2022;87:1062–1073). To compensate for the low gyromagnetic ratio of carbon-13, an efficiency of around 0.3 mT/m/A is needed. At 10 kHz, it must sustain maximum voltages and currents of 1.8 kV and 300 A (4.8 kV and 225 A at 20 kHz). The maximum duty cycle needs to be near 100% during the lifetime of the carbon MRI signal, i.e., 2 minutes. The application shall include functional MRI with visual stimulation, so the gradient coil needs to be …
Tildelinger
| Tildelt til | Beløb | Dato |
|---|---|---|
| Futura Composites BV | — | — |
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Ofte stillede spørgsmål
- Hvad er den anslåede værdi af dette udbud?
- Den anslåede værdi offentliggjort af ordregiveren er 129.967 kr.
- Hvem er ordregiver for dette udbud?
- Ordregiveren er Danmarks Tekniske Universitet - DTU (Danmark).
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