A magnetic resonance (MR)-positron emission tomography (PET) device dual modality system includes a dual modality detector system, conductors, and a PET processing device. The dual modality detector system includes a plurality of PET detector device having a framing recovery device and PET detectors, and an MR detector device having a magnetic resonance (MR) receiver. The conductors are electrically connected to the PET detectors. The PET processing device transmits modulated timing and frame synchronization signals to the PET detectors via the conductors and the framing recovery device. The frame synchronization signal is missing one or more framing signals, thereby reducing a spectral radiation of the conductors that causes interference to the MR receiver of the MR detector device. The framing recovery device detects the timing and frame synchronization signals and recovers the one or more missing framing signals.
