{
  "abstract": "PURPOSE: To evaluate the clinical feasibility and quantitative performance of adaptive complex signal average (ACSA) diffusion-weighted imaging (DWI) in abdominal MRI and to compare ACSA DWI with conventional non-ACSA DWI in terms of signal intensity (SI), SNR, apparent diffusion coefficient (ADC), signal intensity difference ratio (SIDR), and lesion contrast across different numbers of excitations (NEX). METHODS: This retrospective study included 82 patients who underwent free-breathing abdominal DWI on a 3T system between January and July 2025. ACSA DWI was reconstructed from the same raw data as non-ACSA DWI using a combination of adaptive averaging and complex-domain averaging. ROIs were placed in the liver, pancreas, left adrenal gland, and spinal muscles to measure SI, SNR, and ADC. SIDR and inter-lobar right-left (R-L) ratio in SI and ADC were calculated at NEX 2, 3, and 4. For 37 patients with non-cystic hepatic nodules, lesion SI, ADC, contrast ratio, and contrast-to-noise ratio (CNR) were assessed. RESULTS: ACSA DWI significantly increased SI and SNR in motion-prone organs, including the lateral hepatic segment, pancreas, and left adrenal gland, at all NEX levels (P < 0.05). ADC values in abdominal parenchymal organs and hepatic nodules were lower with ACSA DWI, reflecting the noise-floor suppression and adaptive average effects. R-L SI and ADC ratios were significantly different and were closer to 1 in ACSA DWI, indicating improved hepatic signal homogeneity. Lesion SI, contrast ratio, and CNR were significantly higher with ACSA DWI, enhancing nodule conspicuity. CONCLUSION: ACSA DWI improves signal uniformity, SNR, and lesion contrast while maintaining reasonable ADC quantification. Without prolonging scan time or modifying acquisition parameters, ACSA provides a robust, clinically feasible post-processing technique for enhancing both image quality and quantitative reliability in abdominal DWI.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 9,
  "authors": [
    {
      "name": "Miwa Matsukuma"
    },
    {
      "name": "Masahiro Tanabe"
    },
    {
      "name": "Mayumi Higashi"
    },
    {
      "name": "Masatoshi Yamane"
    },
    {
      "name": "Masahiro Abe"
    },
    {
      "name": "Ryutaro Yano"
    },
    {
      "name": "Haruki Furutani"
    },
    {
      "name": "Jo Ishii"
    },
    {
      "name": "Katsuyoshi Ito"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dncjwyg5abv7m.bib",
  "cited_by": 0,
  "doi": "10.2463/mrms.mp.2026-0009",
  "fulltext_url": "https://www.jstage.jst.go.jp/article/mrms/25/4/25_mp.2026-0009/_article",
  "id": "dncjwyg5abv7m",
  "issns": [
    "1880-2206",
    "1347-3182"
  ],
  "landing_url": "https://www.jstage.jst.go.jp/article/mrms/25/4/25_mp.2026-0009/_article",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "jstage-journal",
      "medicine/imaging"
    ],
    [
      "openalex",
      "2741|Advanced MRI Techniques and Applications"
    ]
  ],
  "openalex": "W7170909911",
  "pdf_url": "https://www.jstage.jst.go.jp/article/mrms/25/4/25_mp.2026-0009/_pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-25",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/dncjwyg5abv7m.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:42Z",
      "native_id": "10.2463/mrms.mp.2026-0009",
      "source": "jstage",
      "url": "https://www.jstage.jst.go.jp/article/mrms/25/4/25_mp.2026-0009/_article"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2741|Advanced MRI Techniques and Applications",
      "subfield": "imaging"
    }
  ],
  "title": "Usefulness of Adaptive Complex Signal Average Diffusion-weighted MR Imaging of the Abdomen",
  "title_text": "Usefulness of Adaptive Complex Signal Average Diffusion-weighted MR Imaging of the Abdomen",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:42Z",
  "url": "https://research.draconitic.com/paper/dncjwyg5abv7m",
  "venue": "Magnetic Resonance in Medical Sciences",
  "versions": []
}