AI Article Synopsis
- A new gradient coil with second and third order shims was created for a 9.4 T small animal MRI, specifically designed for marmoset imaging.
- The design utilized advanced techniques to minimize power in conducting surfaces, achieving high efficiency of 1.5 mT/mA while ensuring gradient uniformity within 5% in the designated imaging area.
- Innovative cooling systems were introduced, enabling the coil to function at 100 A RMS with a temperature rise of less than 30°C, which is 25% of its maximum current capacity.
Article Abstract
A gradient coil with integrated second and third order shims has been designed and constructed for use inside an actively shielded 310 mm horizontal bore 9.4 T small animal MRI. An extension of the boundary element method, to minimise the power deposited in conducting surfaces, was used to design the gradients, and a boundary element method with a constraint on mutual inductance was used to design the shims. The gradient coil allows for improved imaging performance and was optimized for an imaging region appropriate for marmoset imaging studies. Efficiencies of 1.5 mT m A were achieved in a 15 cm wide bore while maintaining gradient uniformity ≤5% over the 8 cm region of interest. Two new cooling methods were implemented which allowed the gradient coil to operate at 100 A RMS, 25 % of max current with a temperature rise below 30 C.
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| http://dx.doi.org/10.1088/2057-1976/ab8d97 | DOI Listing |
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Article Synopsis
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