Existing MR techniques for the visualization of fiducial markers (FMs) in the prostate are usually based on spoiled-gradient-echo imaging. FMs appear as signal voids in magnitude images. It is therefore difficult to distinguish them from hemorrhages and calcifications. FMs detection is crucial for MR-only radiotherapy, where CT images are not available. Automatic FMs detection methods are available, but require special software which is not available at the MR console. With this work, we propose a new method for distinctive FMs visualization in the prostate for MR-only radiotherapy which facilitates FMs detection directly at the MR console without using any additional post-processing or software.
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