[Improvement of the surface coil of weida low magnetic field imaging system].

{
  "study_type": "engineering",
  "exposure": {
    "band": null,
    "source": null,
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "signal-to-noise ratio",
    "quality factor",
    "bandwidth"
  ],
  "main_findings": "Replacing Litz wire with a copper tube (6 mm diameter, 0.7 mm thickness) increased the surface coil signal-to-noise ratio from 12 to 23 and the quality factor from 60 to 136, while reducing bandwidth from 50 kHz to 30 kHz in the WEIDA low magnetic field imaging system.",
  "effect_direction": "benefit",
  "limitations": [],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "surface coil",
    "low magnetic field imaging system",
    "coil design",
    "signal-to-noise ratio",
    "quality factor",
    "bandwidth",
    "copper tube",
    "Litz wire"
  ],
  "suggested_hubs": []
}