{
  "id": 10531916,
  "title": "Frequency Shift Imaging Using an Adiabatic SLR Self-Refocused Pulse for Positive-Contrast SPION Imaging at 7T",
  "url": "https://urgent.news/2026/09/28/frequency-shift-imaging-using-an-adiabatic-slr-self-refocused-pulse",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-28T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.27.754833v1?rss=1"
  },
  "original_language": "en",
  "account": null,
  "summary": "Abstract: Purpose: Superparamagnetic iron oxide nanoparticles (SPION) are widely used as MRI contrast agents for cell tracking and molecular imaging. However, their detection using conventional T2/T2* weighted and susceptibility-weighted MRI relies on negative contrast (signal voids), which lacks specificity because similar hypointense signals can arise from other sources of magnetic…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}