Gradient Power Amplifier System
Buyer: Danmarks Tekniske Universitet - DTU
- Published
- 16 September 2025
- Procedure
- Negotiated procedure
- Lots
- 1
- Notice number
- 00604726-2025
- Reference
- 469d8170-ce61-467b-b47e-17d7f753757d
- Official source
- Official source
CPV codes
- 38520000Escáneres
Description
DTU needs to purchase 2 separate amplifiers with power supply units, each suited for driving a uniaxial head insert gradient coil (60-70 micro-Henry) for animal and human magnetic resonance imaging (MRI), particularly for strongly accelerated 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. To compensate for the low gyromagnetic ratio of carbon-13, for a 10 kHz sinusoidal gradient, the amplifiers must sustain peak voltages >1000 V and peak currents >260 A (at 20 kHz: >1000 V and >130 A). Arbitrary waveforms up to 20 kHz must be suited for normal high-performance MRI. The maximum duty cycle needs to be high (preferably 100% at 10 kHz) during the lifetime of the carbon MRI signal, i.e., 2 minutes. At least one of the amplifiers needs to be designed, built and equipped with safety measures so it can be approved for clinical use, even though CE labelling is not a requirement. Market research has shown that the only supplier of suitable gradient amplifiers that can fulfill the requirements above is IECO. Therefore, DTU intends to issue a purchase order to the company.
Awards
| Awarded to | Amount | Date |
|---|---|---|
| International Electric Company Oy | — | — |
Official publications
- TED · 00604726-2025 · 16 September 2025
- OJS · 177/2025 · 16 September 2025
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