Optimal filter design for shielded and unshielded ambient noise reduction in fetal magnetocardiography.

@article{Comani2005OptimalFD,
  title={Optimal filter design for shielded and unshielded ambient noise reduction in fetal magnetocardiography.},
  author={Silvia Comani and Dante Mantini and Giovanna Alleva and Silvano Di Luzio and Gian Luca Romani},
  journal={Physics in medicine and biology},
  year={2005},
  volume={50 23},
  pages={5509-21}
}
The greatest impediment to extracting high-quality fetal signals from fetal magnetocardiography (fMCG) is environmental magnetic noise, which may have peak-to-peak intensity comparable to fetal QRS amplitude. Being an unstructured Gaussian signal with large disturbances at specific frequencies, ambient field noise can be reduced with hardware-based approaches and/or with software algorithms that digitally filter magnetocardiographic recordings. At present, no systematic evaluation of filters… CONTINUE READING