The whole-body coil of the Australian MRI-Linac system can produce images without interfering with the Linac beam during radiotherapy. However, the whole-body coil is distant from the patient, causing lower SNR and is not parallel imaging capable. According to the radiotherapy treatment requirement, an 8-element surface coil array was designed to be radio-transparent and the corresponding imaging algorithms were developed for this coil array. The simulation results showed that the proposed coil array has improved SNR compared to the whole-body coil, and a reduction rate of three can be achieved in parallel imaging without prominent aliasing artefacts.
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