Graduation coil unit with cooling channel
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- SIEMENS HEALTHINEERS AG
- Filing Date
- 2022-12-15
- Publication Date
- 2026-06-11
AI Technical Summary
Existing gradient coil units in MRI scanners face challenges in generating high magnetic field gradients with strong rise and fall rates while efficiently dissipating the heat generated by power loss, particularly when examining the head of a subject with strong magnetic fields exceeding 3 Tesla.
A gradient coil unit design featuring a primary conductor structure with two serially connected sections and a cooling channel arranged in a spiral configuration, allowing for efficient cooling and high current density, enabling the generation of magnetic field gradients with maximum amplitudes of up to 500 mT/m and rise and fall rates of several hundred kA/s.
The design enables robust operation with high current density, efficient cooling, and the generation of strong magnetic field gradients, improving image acquisition speed and resolution, especially for head examinations, while minimizing power loss and heat generation.