{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T08:45:48Z","timestamp":1785746748829,"version":"3.56.0"},"reference-count":43,"publisher":"American Association for the Advancement of Science (AAAS)","funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["82371993"],"award-info":[{"award-number":["82371993"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["spj.science.org"],"crossmark-restriction":true},"short-container-title":["BME Front"],"published-print":{"date-parts":[[2026,1,1]]},"abstract":"<jats:p>\n                    <jats:bold>Objective:<\/jats:bold>\n                    Microvascular alterations are early biomarkers of many diseases, but clinical translation is hindered by the lack of noninvasive deep-tissue imaging tools with capillary resolution and standardized analysis approaches.\n                    <jats:bold>Impact Statement:<\/jats:bold>\n                    ULM-based Vascular Biomarker Automated Analysis (U-VBA) provides a standardized framework that bridges microvascular imaging reconstruction and automated biomarker analysis, with feasibility demonstration in animals models in\u00a0vivo and clinical patient data.\n                    <jats:bold>Introduction:<\/jats:bold>\n                    Ultrasound localization microscopy (ULM) can overcome the diffraction limit but lacks generalizable imaging reconstruction and biomarker quantification pipelines.\n                    <jats:bold>Methods:<\/jats:bold>\n                    We developed U-VBA, integrating motion correction, cascaded denoising (singular value decomposition, high-pass filtering, and background subtraction), and a panel of 6 vascular biomarkers (density, intervessel distance, diameter, velocity, perfusion, and tortuosity). Performance was validated in various settings, including flow phantoms, chicken chorioallantoic membranes (\n                    <jats:italic toggle=\"yes\">n<\/jats:italic>\n                    = 5), rabbit optic nerve injury models (\n                    <jats:italic toggle=\"yes\">n<\/jats:italic>\n                    = 4), and a clinical patient cohort with cervical lymph node tumors (\n                    <jats:italic toggle=\"yes\">n<\/jats:italic>\n                    = 39).\n                    <jats:bold>Results:<\/jats:bold>\n                    U-VBA achieved robust performance in flow phantoms and resolved the finest capillaries down to 16.2 \u03bcm in chorioallantoic membrane models. In rabbit eye models, it precisely captures the dynamic vascular changes and establishes the vascular biomarkers during elevated intraocular pressure and recovery. In the clinical cohort, we demonstrated the potential value of U-VBA, which leverages 4 biomarkers (intervessel distance, diameter, perfusion, and tortuosity) to differentiate 3 lymph node conditions, with 85% accuracy in 5-fold cross-validation.\n                    <jats:bold>Conclusion:<\/jats:bold>\n                    U-VBA standardizes ULM-based microvascular phenotyping and integrates into routine ultrasound workflows, offering a noninvasive tool for preclinical and clinical vascular biomarker analysis.\n                  <\/jats:p>","DOI":"10.34133\/bmef.0295","type":"journal-article","created":{"date-parts":[[2026,7,20]],"date-time":"2026-07-20T01:06:57Z","timestamp":1784509617000},"update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark_01","source":"Crossref","is-referenced-by-count":0,"title":["A General-Purpose Framework for Microvascular Reconstruction and Quantitative Analysis in Ultrasound Localization Microscopy"],"prefix":"10.34133","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-3021-4197","authenticated-orcid":false,"given":"Peinan","family":"Liu","sequence":"first","affiliation":[{"name":"School of Biomedical Engineering &amp; State Key Laboratory of Advanced Medical Materials and Devices, \rShanghaiTech University, Shanghai, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jie","family":"Guo","sequence":"additional","affiliation":[{"name":"Eye Institute and Department of Ophthalmology, Eye &amp; ENT Hospital, \rFudan University, Shanghai, China."},{"name":"NHC Key Laboratory of Myopia and Related Eye Disease, \rChinese Academy of Medical Sciences, Shanghai, China."},{"name":"Shanghai Key Laboratory of Visual Impairment and Restoration","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuedi","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Ultrasound, \rPeking University Third Hospital, Beijing, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuan","family":"Zong","sequence":"additional","affiliation":[{"name":"Eye Institute and Department of Ophthalmology, Eye &amp; ENT Hospital, \rFudan University, Shanghai, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ting","family":"Zhang","sequence":"additional","affiliation":[{"name":"Eye Institute and Department of Ophthalmology, Eye &amp; ENT Hospital, \rFudan University, Shanghai, China."},{"name":"NHC Key Laboratory of Myopia and Related Eye Disease, \rChinese Academy of Medical Sciences, Shanghai, China."},{"name":"Shanghai Key Laboratory of Visual Impairment and Restoration","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ligang","family":"Cui","sequence":"additional","affiliation":[{"name":"Department of Ultrasound, \rPeking University Third Hospital, Beijing, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3634-8757","authenticated-orcid":true,"given":"Xuejun","family":"Qian","sequence":"additional","affiliation":[{"name":"School of Biomedical Engineering &amp; State Key Laboratory of Advanced Medical Materials and Devices, \rShanghaiTech University, Shanghai, China."},{"name":"Shanghai Clinical Research and Trial Center","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"221","published-online":{"date-parts":[[2026,8,3]]},"reference":[{"key":"e_1_3_4_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S1056-8719(00)00125-8"},{"issue":"6","key":"e_1_3_4_3_2","doi-asserted-by":"crossref","first-page":"1012","DOI":"10.1161\/01.HYP.0000249510.20326.72","article-title":"Hypertension: A disease of the microcirculation?","volume":"48","author":"Feihl F","year":"2006","unstructured":"Feihl F, Liaudet L, Waeber B, Levy BI. 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