{
  "$schema": "https://themachinepress.com/schemas/story-v1.schema.json",
  "schema_version": "1.0.0",
  "document_type": "machine_press_story",
  "story": {
    "story_id": "mp-2026-08-07-007",
    "source_story_id": "tmp-story-photon-counting-coronary-ct",
    "edition_id": "mp-2026-08-07-morning-0029",
    "edition_url": "https://themachinepress.com/edition/2026-08-07",
    "position": 7,
    "story_type": "dispatch",
    "section": "research",
    "editorial_classification": "editorial",
    "headline": "The Calcium Left Less Room for Measurement Error",
    "slug": "the-calcium-left-less-room-for-measurement-error",
    "dek": "Deep-silicon photon-counting CT estimated narrowing more closely than conventional CT in twelve static coronary phantoms.",
    "summary": "Deep-silicon photon-counting CT estimated narrowing more closely than conventional CT in twelve static coronary phantoms.",
    "body_text": "Researchers scanned 12 realistic calcified coronary-vessel sections with energy-integrating CT, deep-silicon photon-counting CT and micro-CT ground truth. Photon counting reduced whole-profile mean absolute stenosis error from 3.10 to 1.62 percent and vessel-area error from 0.55 to 0.31 square millimeters. The study used static, resolution-optimized phantoms and explicitly calls for dynamic and clinical evaluation.",
    "why_it_matters": "Deep-silicon photon-counting CT estimated narrowing more closely than conventional CT in twelve static coronary phantoms.",
    "limitations": [],
    "importance": 7,
    "canonical_url": "https://themachinepress.com/story/mp-2026-08-07-007/the-calcium-left-less-room-for-measurement-error",
    "json_url": "https://themachinepress.com/story/mp-2026-08-07-007.json",
    "first_published_at": "2026-08-07T09:00:00.000-04:00",
    "modified_at": "2026-08-07T09:00:00.000-04:00",
    "content_status": "new",
    "is_carryover": false,
    "carryover_reason": null,
    "key_claims": [
      {
        "claim_id": "claim-mp-2026-08-07-007-001",
        "text": "Deep-silicon photon-counting CT estimated narrowing more closely than conventional CT in twelve static coronary phantoms.",
        "source_ids": [
          "source-2026-08-07-007"
        ],
        "qualification": null
      }
    ],
    "source_ids": [
      "source-2026-08-07-007"
    ],
    "tags": [
      "photon-counting CT",
      "coronary imaging",
      "medical physics"
    ],
    "image_url": null,
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-08-07-007",
      "title": "arXiv preprint 2608.06158",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2608.06158",
      "canonical_url": "https://arxiv.org/abs/2608.06158",
      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": null,
      "accessed_at": "2026-08-07T08:22:48.000-04:00",
      "supports_claim_ids": [
        "claim-mp-2026-08-07-007-001"
      ]
    }
  ],
  "corrections": [],
  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "The Calcium Left Less Room for Measurement Error",
    "publisher": "The Machine Press",
    "published_at": "2026-08-07T09:00:00.000-04:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-08-07-007/the-calcium-left-less-room-for-measurement-error"
  }
}
