{
  "abstract": "Microwave imaging could monitor breast tumor response to neoadjuvant chemotherapy, but between-visit changes in breast positioning and normal tissue may confound tumor-related changes. We use eight patient-specific dielectric models from longitudinal MRI of two patients at four time points. For each model, 24-port S-parameters were simulated from 1 to 3 GHz, and Jacobians computed for tumor permittivity and loss, fibroglandular tissue (FGT) permittivity, and breast rotation and translation. 1 mm positioning changes produced changes 20 to 50 times larger than a 10% tumor permittivity change above 2 GHz. Nevertheless, tumor sensitivity patterns were weakly aligned with positioning patterns, tumor-FGT similarity exceeded 0.8 at only some visits, and the Jacobians remained well conditioned. Tumor responses are thus small but separable; monitoring will require positioning correction, frequency selection, and noise-aware detectability analysis.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.26630",
  "author_total": 4,
  "authors": [
    {
      "name": "Somayeh B. Shafiei"
    },
    {
      "name": "Ian Jeffrey"
    },
    {
      "name": "Vahab Khoshdel"
    },
    {
      "name": "Joe LoVetri"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/934qmxwsvamsg.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.26630",
  "fulltext_url": null,
  "id": "934qmxwsvamsg",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.26630",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "eess.SP"
    ],
    [
      "arxiv",
      "physics.med-ph"
    ],
    [
      "openalex",
      "2204|Microwave Imaging and Scattering Analysis"
    ]
  ],
  "openalex": "W7223053444",
  "pdf_url": "https://arxiv.org/pdf/2610.26630",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-19",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/934qmxwsvamsg.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:30:52Z",
      "native_id": "2610.26630",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.26630"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.med-ph",
      "subfield": "biological-medical"
    }
  ],
  "title": "Sensitivity and Identifiability of Tumor-Related Changes in Longitudinal Microwave Breast Imaging",
  "title_text": "Sensitivity and Identifiability of Tumor-Related Changes in Longitudinal Microwave Breast Imaging",
  "type": "preprint",
  "updated_at": "2026-10-30T12:33:41Z",
  "url": "https://research.draconitic.com/paper/934qmxwsvamsg",
  "venue": "arXiv",
  "versions": []
}