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Thus, we aimed to investigate whether high-temporal-resolution dynamic contrast-enhanced MRI (H_DCE-MRI) would be superior to conventional low-temporal-resolution DCE-MRI (L_DCE-MRI) in the diagnosis of BI-RADS 4 breast lesions.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>This single-center study was approved by the IRB. From April 2015 to June 2017, patients with breast lesions were prospectively included and randomly assigned to undergo either H_DCE-MRI, including 27 phases, or L_DCE-MRI, including 7 phases. Patients with BI-RADS 4 lesions were diagnosed by the senior radiologist in this study. Using a two-compartment extended Tofts model and a three-dimensional volume of interest, several pharmacokinetic parameters reflecting hemodynamics, including K<jats:sup>trans<\/jats:sup>, K<jats:sub>ep<\/jats:sub>, V<jats:sub>e<\/jats:sub>, and V<jats:sub>p<\/jats:sub>, were obtained from the intralesional, perilesional and background parenchymal enhancement areas, which were labeled the <jats:italic>Lesion<\/jats:italic>, <jats:italic>Peri<\/jats:italic> and <jats:italic>BPE<\/jats:italic> areas, respectively. Models were developed based on hemodynamic parameters, and the performance of these models in discriminating between benign and malignant lesions was evaluated by receiver operating characteristic (ROC) curve analysis.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>A total of 140 patients were included in the study and underwent H_DCE-MRI (n\u2009=\u200962) or L_DCE-MRI (n\u2009=\u200978) scans; 56 of these 140 patients had BI-RADS 4 lesions. Some pharmacokinetic parameters from H_DCE-MRI (Lesion_K<jats:sup>trans<\/jats:sup>, K<jats:sub>ep<\/jats:sub>, and V<jats:sub>p;<\/jats:sub> Peri_K<jats:sup>trans<\/jats:sup>, K<jats:sub>ep<\/jats:sub>, and V<jats:sub>p<\/jats:sub>) and from L_DCE-MRI (Lesion_K<jats:sub>ep<\/jats:sub>, Peri_V<jats:sub>p<\/jats:sub>, BPE_K<jats:sup>trans<\/jats:sup> and BPE_V<jats:sub>p<\/jats:sub>) were significantly different between benign and malignant breast lesions (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.01). ROC analysis showed that Lesion_K<jats:sup>trans<\/jats:sup> (AUC\u2009=\u20090.866), Lesion_K<jats:sub>ep<\/jats:sub> (AUC\u2009=\u20090.929), Lesion_V<jats:sub>p<\/jats:sub> (AUC\u2009=\u20090.872), Peri_K<jats:sup>trans<\/jats:sup> (AUC\u2009=\u20090.733), Peri_K<jats:sub>ep<\/jats:sub> (AUC\u2009=\u20090.810), and Peri_V<jats:sub>p<\/jats:sub> (AUC\u2009=\u20090.857) in the H_DCE-MRI group had good discrimination performance. Parameters from the BPE area showed no differentiating ability in the H_DCE-MRI group. Lesion<jats:bold>_<\/jats:bold>K<jats:sub>ep<\/jats:sub> (AUC\u2009=\u20090.767), Peri_V<jats:sub>p<\/jats:sub> (AUC\u2009=\u20090.726), and BPE_K<jats:sup>trans<\/jats:sup> and BPE_V<jats:sub>p<\/jats:sub> (AUC\u2009=\u20090.687 and 0.707) could differentiate between benign and malignant breast lesions in the L_DCE-MRI group. The models were compared with the senior radiologist\u2019s assessment for the identification of BI-RADS 4 breast lesions. The AUC, sensitivity and specificity of Lesion_K<jats:sub>ep<\/jats:sub> (0.963, 100.0%, and 88.9%, respectively) in the H_DCE-MRI group were significantly higher than those of the same parameter in the L_DCE-MRI group (0.663, 69.6% and 75.0%, respectively) for the assessment of BI-RADS 4 breast lesions. The DeLong test was conducted, and there was a significant difference only between Lesion_K<jats:sub>ep<\/jats:sub> in the H_DCE-MRI group and the senior radiologist (<jats:italic>P<\/jats:italic>\u2009=\u20090.04).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Pharmacokinetic parameters (K<jats:sup>trans<\/jats:sup>, K<jats:sub>ep<\/jats:sub> and V<jats:sub>p<\/jats:sub>) from the intralesional and perilesional regions on high-temporal-resolution DCE-MRI, especially the intralesional K<jats:sub>ep<\/jats:sub> parameter, can improve the assessment of benign and malignant BI-RADS 4 breast lesions to avoid unnecessary biopsy.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12880-023-01015-4","type":"journal-article","created":{"date-parts":[[2023,4,19]],"date-time":"2023-04-19T17:02:39Z","timestamp":1681923759000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["High-temporal resolution DCE-MRI improves assessment of intra- and peri-breast lesions categorized as BI-RADS 4"],"prefix":"10.1186","volume":"23","author":[{"given":"Yufeng","family":"Liu","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shiwei","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jingjing","family":"Qu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rui","family":"Tang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chundan","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fengchun","family":"Xiao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peipei","family":"Pang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhichao","family":"Sun","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maosheng","family":"Xu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jiaying","family":"Li","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2023,4,19]]},"reference":[{"issue":"9805","key":"1015_CR1","doi-asserted-by":"publisher","first-page":"1804","DOI":"10.1016\/S0140-6736(11)61350-0","volume":"378","author":"M Morrow","year":"2011","unstructured":"Morrow M, Waters J, Morris E. 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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The Ethics Committee of the First Affiliated Hospital of Zhejiang Chinese Medical University has approved this study, in which informed consent was written, and patient confidentiality was protected.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare that they have no competing of interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"58"}}