{
  "abstract": "The depletion method (DM) enables the estimation of the acoustic nonlinearity parameter, B/A, in pulse-echo ultrasound using fundamental-band signals from low- and high-pressure acquisitions, but requires accurate knowledge of the acoustic-pressure scaling factor. This requirement limits experimental translation because of the slightly nonlinear scaling between excitation voltage set on the ultrasound system and pressure at the probe. We propose a complementary-aperture pulse sequence (CAPS) that recovers the linearly scaled low-pressure signal by coherently summing RF acquisitions from interleaved transmit subapertures whereas a full-aperture transmission provides the high-pressure signal maintaining the same excitation voltage configured in the ultrasound system. In silico phantoms of a homogeneous sample and a reference evaluated four aperture partitions of CAPS and compared them with the DM under relative scaling-factor errors from 0.01% to 10%. Using the DM, errors of 0.1% and 1% produced absolute B/A biases of up to 27.3% and 58.3%, respectively. CAPS yielded mean B/A values of 8.9 for a prescribed value of 9, with biases of less than 1.3% across all partitions, matching an ideally calibrated DM. These results demonstrate that CAPS preserves depletion-based B/A estimation without using the pressure scaling factor as a reconstruction input, supporting experimental and in vivo implementation without pressure-ratio calibration.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.23155",
  "author_total": 4,
  "authors": [
    {
      "name": "Esteban Avilés"
    },
    {
      "name": "Michael Oelze"
    },
    {
      "name": "Roberto Lavarello"
    },
    {
      "name": "Andres Coila"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/20tt0m0n5edct.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.23155",
  "fulltext_url": null,
  "id": "20tt0m0n5edct",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.23155",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "eess.SP"
    ],
    [
      "arxiv",
      "physics.med-ph"
    ],
    [
      "openalex",
      "2741|Ultrasound Imaging and Elastography"
    ]
  ],
  "openalex": "W7214032698",
  "pdf_url": "https://arxiv.org/pdf/2609.23155",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-19",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/20tt0m0n5edct.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2609.23155",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.23155"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.med-ph",
      "subfield": "biological-medical"
    }
  ],
  "title": "Complementary-Aperture Pulse Sequencing for Fundamental-Band Nonlinearity Parameter Imaging",
  "title_text": "Complementary-Aperture Pulse Sequencing for Fundamental-Band Nonlinearity Parameter Imaging",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/20tt0m0n5edct",
  "venue": "arXiv",
  "versions": []
}