1. A computer-implemented method for reducing artefacts in an MRI image as a result of radiation induced current in collector coils of an MRI apparatus, the method comprising: selecting a plurality of pixels in a k-space image prior to generation of the MRI image; analysing each of the plurality of selected pixels to determine whether a pixel intensity is greater than a predefined global threshold; for each pixel having pixel intensity greater than the predefined global threshold, determining whether the pixel lies within a signal region of the k-space image or outside of the signal region of the k-space image; for each pixel that lies outside of the signal region, modifying the pixel intensity to be similar to a background pixel intensity, thereby creating a modified k-space image; and generating the MRI image based on the modified k-space image.