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Most current approaches of measuring intra\u2010abdominal pressure (IAP) involve the use of sensors inside or attached to the body, which may, however, make daily monitoring inconvenient. This paper proposes a noninvasive and contactless system to learn the relationship between the passive mechanical behavior of the abdominal wall with millimeter\u2010wave (mm\u2010wave) frequency\u2010modulated continuous wave (FMCW) radar and an IAP sensor via a deep learning approach. We correlated the IAP variance with the mobility measures of the abdominal wall and proposed Pearson\u2010coefficient\u2010guided domain adversarial neural network (PCG\u2010DANN) to learn the mapping relationship. To validate the efficacy of our proposed method, a stable intra\u2010abdominal hypertension\/abdominal compartment syndrome (IAH\/ACS) model using swine was established to evaluate the mobility of the abdominal wall under different intra\u2010abdominal pressures with multichannel mm\u2010wave FMCW radar. The superiority of the proposed method is demonstrated by comparing with other neural network structures and mostly adopted sensor\u2010based methods. These preliminary results confirm that the new methodology for evaluating IAP nonlinearity is promising and that it can serve as an important diagnostic and treatment reference for patients with IAH.<\/jats:p><\/jats:sec>","DOI":"10.1002\/aisy.202100209","type":"journal-article","created":{"date-parts":[[2022,1,17]],"date-time":"2022-01-17T04:10:47Z","timestamp":1642392647000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Deep Domain Adaptation for Predicting Intra\u2010Abdominal Pressure with Multichannel Attention Fusion Radar Chip"],"prefix":"10.1002","volume":"4","author":[{"given":"Hao","family":"Tang","sequence":"first","affiliation":[{"name":"Wound Trauma Medical Center State Key Laboratory of Trauma Burns and Combined Injury Daping Hospital Army Medical University  Chongqing 400042 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2312-8077","authenticated-orcid":false,"given":"Yanbo","family":"Dai","sequence":"additional","affiliation":[{"name":"Chongqing Key Laboratory of Space Information Network and Intelligent Information Fusion Chongqing University  Chongqing 400044 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dongchu","family":"Zhao","sequence":"additional","affiliation":[{"name":"Wound Trauma Medical Center State Key Laboratory of Trauma Burns and Combined Injury Daping Hospital Army Medical University  Chongqing 400042 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhiwei","family":"Sun","sequence":"additional","affiliation":[{"name":"Chongqing Key Laboratory of Space Information Network and Intelligent Information Fusion Chongqing University  Chongqing 400044 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fuqiang","family":"Chen","sequence":"additional","affiliation":[{"name":"Chongqing Key Laboratory of Space Information Network and Intelligent Information Fusion Chongqing University  Chongqing 400044 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yiliang","family":"Zhu","sequence":"additional","affiliation":[{"name":"Chongqing Key Laboratory of Space Information Network and Intelligent Information Fusion Chongqing University  Chongqing 400044 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huaping","family":"Liang","sequence":"additional","affiliation":[{"name":"Wound Trauma Medical Center State Key Laboratory of Trauma Burns and Combined Injury Daping Hospital Army Medical University  Chongqing 400042 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7944-3327","authenticated-orcid":false,"given":"Hailin","family":"Cao","sequence":"additional","affiliation":[{"name":"Chongqing Key Laboratory of Space Information Network and Intelligent Information Fusion Chongqing University  Chongqing 400044 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lianyang","family":"Zhang","sequence":"additional","affiliation":[{"name":"Wound Trauma Medical Center State Key Laboratory of Trauma Burns and Combined Injury Daping Hospital Army Medical University  Chongqing 400042 China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2022,1,17]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00134-013-2906-z"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00464-005-0676-6"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.bpa.2013.06.009"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-84628-275-1_8"},{"key":"e_1_2_10_6_1","first-page":"181563","volume":"2012","author":"Wauters J.","year":"2012","journal-title":"Crit. 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