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An improved FPN network for brain tumor segmentation is proposed to improve the segmentation effect of brain tumor.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Materials and methods<\/jats:title>\n                <jats:p>Aiming at the problem that the traditional full convolutional neural network (FCN) has weak processing ability, which leads to the loss of details in tumor segmentation, this paper proposes a brain tumor image segmentation method based on the improved feature pyramid networks (FPN) convolutional neural network. In order to improve the segmentation effect of brain tumors, we improved the model, introduced the FPN structure into the U-Net structure, captured the context multi-scale information by using the different scale information in the U-Net model and the multi receptive field high-level features in the FPN convolutional neural network, and improved the adaptability of the model to different scale features.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Performance evaluation indicators show that the proposed improved FPN model has 99.1% accuracy, 92% DICE rating and 86% Jaccard index. The performance of the proposed method outperforms other segmentation models in each metric. In addition, the schematic diagram of the segmentation results shows that the segmentation results of our algorithm are closer to the ground truth, showing more brain tumour details, while the segmentation results of other algorithms are smoother.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>The experimental results show that this method can effectively segment brain tumor regions and has certain generalization, and the segmentation effect is better than other networks. It has positive significance for clinical diagnosis of brain tumors.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12880-023-01131-1","type":"journal-article","created":{"date-parts":[[2023,10,30]],"date-time":"2023-10-30T15:03:00Z","timestamp":1698678180000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":31,"title":["Brain tumor image segmentation based on improved FPN"],"prefix":"10.1186","volume":"23","author":[{"given":"Haitao","family":"Sun","sequence":"first","affiliation":[]},{"given":"Shuai","family":"Yang","sequence":"additional","affiliation":[]},{"given":"Lijuan","family":"Chen","sequence":"additional","affiliation":[]},{"given":"Pingyan","family":"Liao","sequence":"additional","affiliation":[]},{"given":"Xiangping","family":"Liu","sequence":"additional","affiliation":[]},{"given":"Ying","family":"Liu","sequence":"additional","affiliation":[]},{"given":"Ning","family":"Wang","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2023,10,30]]},"reference":[{"key":"1131_CR1","doi-asserted-by":"publisher","first-page":"104","DOI":"10.1016\/j.ejon.2019.06.003","volume":"41","author":"A Cheung","year":"2019","unstructured":"Cheung A, Li W, Ho L, et al. 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This study has been approved by the Ethics Review Committee of Zhongshan Hospital of Traditional Chinese Medicine. All methods and data were analysed in accordance with relevant guidelines and regulations.","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 no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"172"}}