{
  "annotation_id": "94b0e864-ced3-428c-9893-83de32841009",
  "date_created": "2026-03-02T18:00:39.655000Z",
  "date_modified": "2026-03-02T18:00:39.655000Z",
  "file_hash": "9fd82109e9fe7d784f6add9683163e03c392061e66f5d759be19b4645b04b354",
  "private": false,
  "record": {
    "abstract": "We present NMR measurements of the diffusion of hyperpolarized helium-3 in\nthe human lung performed at fields much lower than those of conventional MRI\nscanners. The measurements were made on standing subjects using homebuilt\napparatus operating at 3 mT. Oxygen-limited transverse relaxation (T2 up to\n15-35 s) could be measured in-vivo. Accurate global diffusion measurements have\nbeen performed in-vivo and in-vitro. 1D ADC mapping with high SNR demonstrates\nthe real possibility of performing quality lung imaging at extremely low\nfields.",
    "arxiv_id": "physics/0207129",
    "authors": [
      "Christopher P. Bidinosti",
      "Jamal Choukeife",
      "Pierre-Jean Nacher",
      "Genevi\u00e8ve Tastevin"
    ],
    "categories": [
      "physics.med-ph",
      "physics.ins-det"
    ],
    "doi": "10.1016/S1090-7807(02)00198-2",
    "title": "In-Vivo NMR of Hyperpolarized Helium-3 in the Human Lung at Very Low   Magnetic Fields",
    "url": "https://arxiv.org/abs/physics/0207129"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8e85e99b-2a71-42d8-a7ea-57e9ea36da1b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}