{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,4,8]],"date-time":"2025-04-08T06:24:13Z","timestamp":1744093453926,"version":"3.28.0"},"reference-count":31,"publisher":"Georg Thieme Verlag KG","issue":"S 01","funder":[{"name":"Maternal and children's health research project of Jiangsu Province","award":["F202108"],"award-info":[{"award-number":["F202108"]}]},{"name":"Clinical Medical Expert Team Project of Suzhou","award":["SZYJTD201709"],"award-info":[{"award-number":["SZYJTD201709"]}]},{"name":"Suzhou Science and Technology Plan Research Project","award":["SKJYD2021222"],"award-info":[{"award-number":["SKJYD2021222"]}]},{"name":"Suzhou Science and Technology Plan Research Project","award":["SYSD2020133"],"award-info":[{"award-number":["SYSD2020133"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am J Perinatol"],"published-print":{"date-parts":[[2024,5]]},"abstract":"<jats:p>\n            Objective\u2003Placenta previa (PP) is associated with intraoperative and postpartum hemorrhage, increased maternal morbidity and mortality. We aimed to develop a magnetic resonance imaging (MRI)-based nomogram to preoperative prediction of intraoperative hemorrhage (IPH) for PP.<\/jats:p><jats:p>\n            Study Design\u2003A total of 125 PP pregnant women were divided into a training set (n\u2009=\u200980) and a validation set (n\u2009=\u200945). An MRI-based model was built for the classification of patients into IPH and non-IPH groups in a training set and a validation set. Multivariate nomograms were built according to radiomics features. Receiver operating characteristic (ROC) curve was used to assess the model. Predictive accuracy of nomogram were assessed by calibration plots and decision curve analysis.<\/jats:p><jats:p>\n            Results\u2003In multivariate analysis, placenta position, placenta thickness, cervical blood sinus, and placental signals in the cervix were significantly independent predictors for IPH (all ps\u2009&lt;\u20090.05). The MRI-based nomogram showed favorable discrimination between IPH and non-IPH groups. The calibration curve showed good agreement between the estimated and the actual probability of IPH. Decision curve analysis also showed a high clinical benefit across a wide range of probability thresholds. Area under the ROC curve was 0.918 (95% confidence interval [CI]: 0.857\u20130.979) in the training set and 0.866 (95% CI: 0.748\u20130.985) in the validation set by the combination of four MRI features.<\/jats:p><jats:p>\n            Conclusion\u2003The MRI-based nomograms might be a useful tool for the preoperative prediction of IPH outcomes for PP. Our study enables obstetricians to perform adequate preoperative evaluation to reduce blood loss and cesarean hysterectomy.<\/jats:p><jats:p>\n            Key Points\n          <\/jats:p>","DOI":"10.1055\/a-2099-3809","type":"journal-article","created":{"date-parts":[[2023,5,24]],"date-time":"2023-05-24T23:14:35Z","timestamp":1684970075000},"page":"e2174-e2183","source":"Crossref","is-referenced-by-count":1,"special_numbering":"S","title":["Magnetic Resonance Imaging\u2013Based Radiomics Nomogram to Predict Intraoperative Hemorrhage of Placenta Previa"],"prefix":"10.1055","volume":"41","author":[{"given":"Yanli","family":"Lu","sequence":"additional","affiliation":[{"name":"Department of Radiology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, Jiangsu, People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liping","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, Jiangsu, People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoyan","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, Jiangsu, People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yongmei","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, Jiangsu, People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dali","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, Jiangsu, People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yidong","family":"Gu","sequence":"additional","affiliation":[{"name":"Department of Medical Ultrasound, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, Jiangsu, People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yongfei","family":"Yue","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, Jiangsu, People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"194","published-online":{"date-parts":[[2023,7,4]]},"reference":[{"issue":"03","key":"ref1","doi-asserted-by":"crossref","first-page":"654","DOI":"10.1097\/AOG.0000000000001005","article-title":"Abnormal placentation: placenta 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