To improve the spatiotemporal resolution of 3D imaging on the MR-linac, we are developing a new radiolucent 64-channel receive array, which can be placed directly onto the patient during treatments. Coil prototypes caused no significant dosimetric changes. Measurements with 4-channel prototypes showed that overlapping coil loops lead to the highest potential imaging performance. Imaging comparisons with the current MR-linac array showed that the signal-to-noise ratio is improved.
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