Article(id=1244321219307225946, tenantId=1146029695717560320, journalId=1244284848500682798, issueId=1244321215637209904, articleNumber=null, orderNo=null, doi=10.16156/j.1004-7220.2025.05.021, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1734537600000, receivedDateStr=2024-12-19, revisedDate=1740326400000, revisedDateStr=2025-02-24, acceptedDate=null, acceptedDateStr=null, onlineDate=1774598897053, onlineDateStr=2026-03-27, pubDate=1759248000000, pubDateStr=2025-10-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774598897053, onlineIssueDateStr=2026-03-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774598897053, creator=13701087609, updateTime=1774598897053, updator=13701087609, issue=Issue{id=1244321215637209904, tenantId=1146029695717560320, journalId=1244284848500682798, year='2025', volume='40', issue='5', pageStart='1079', pageEnd='1366', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1774598896178, creator=13701087609, updateTime=1774599509568, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1244323788452639476, tenantId=1146029695717560320, journalId=1244284848500682798, issueId=1244321215637209904, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1244323788452639477, tenantId=1146029695717560320, journalId=1244284848500682798, issueId=1244321215637209904, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1239, endPage=1247, ext={EN=ArticleExt(id=1244321221312103333, articleId=1244321219307225946, tenantId=1146029695717560320, journalId=1244284848500682798, language=EN, title=Mean Arterial Pressure Prediction Based on Fully Connected Neural Networks, columnId=1244321216404767539, journalTitle=Journal of Medical Biomechanics, columnName=Original Articles, runingTitle=null, highlight=null, articleAbstract=
Objective To achieve non-invasive and precise prediction of mean arterial pressure (MAP) based on a fully convolutional neural network (FCNN).
Methods A high-precision blood pressure data acquisition system compliant with international metrological standards was used in conjunction with the ‘gold standard’ auscultation method to collect blood pressure and pulse waveform data from patients. True MAP values were derived via Gaussian fitting of pulse waveform data, constructing a traceable dataset. The FCNN was applied to this dataset to develop a novel MAP prediction method. Additionally, the predictive accuracy of the FCNN was compared with linear regression and conventional empirical formulas.
Results The mean squared errors (MSE) for MAP prediction using the FCNN, linear regression, and empirical formulas were 19.76, 21.40, and 30.97, respectively. The coefficients of determination (R2) were 0.90, 0.89, and 0.84, and the prediction accuracies were 0.90, 0.89, and 0.85, respectively.
Conclusions By using systolic blood pressure, diastolic blood pressure, age, and arm circumference as input parameters, the FCNN-based MAP prediction method significantly reduces the bias of empirical formulas. This approach not only improves the accuracy of hemodynamic boundary condition acquisition but also contributes to refining the metrological traceability system of non-invasive blood pressure measurement.
, correspAuthors=Zhixiong HU, Liguo YANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Yating QI, Jincheng LIU, Jiaying LIU, Siqi WU, Biaosheng HUANG, Zhixiong HU, Liguo YANG), CN=ArticleExt(id=1244321232045327000, articleId=1244321219307225946, tenantId=1146029695717560320, journalId=1244284848500682798, language=CN, title=基于全连接神经网络预测平均动脉压, columnId=1244321216576734006, journalTitle=医用生物力学, columnName=论著, runingTitle=null, highlight=null, articleAbstract=
目的 利用全连接神经网络(fully convolutional neural network,FCNN)实现无创精准预测平均动脉压(mean arterial pressure,MAP)。
方法 采用符合国际计量标准的高精度血压数据采集系统,结合“金标准”听诊法同步获取患者的血压脉搏波形数据;通过高斯拟合处理脉搏波形数据后得到真实MAP,基于此过程构建可溯源的数据集。采用FCNN对上述数据集进行处理,提出了一种新的MAP预测模型,并比较FCNN、线性回归和经验公式3种方法预测MAP的效果。
结果 FCNN、线性回归和经验公式预测MAP的均方误差分别为19.76、21.40、30.97,决定系数分别为0.90、0.89、0.84。
结论 以收缩压、舒张压、年龄和臂围作为输入参数,通过FCNN预测MAP可有效降低经验公式的系统误差,为血流动力学边界条件的精确获取提供支持,进一步完善现有无创血压测量的计量溯源体系。
, correspAuthors=胡志雄, 杨立国, authorNote=null, correspAuthorsNote=
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作者贡献声明:
綦雅婷、刘金城负责研究实施、数据分析、论文撰写;刘佳颖、吴思圻、黄标晟负责数据分析、论文撰写;胡志雄负责方案设计、论文指导与撰写;杨立国负责论文指导与撰写。
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无创血压数据采集方式, figureFileSmall=kyTPRBfXMlOjF/pU4z7qLw==, figureFileBig=Qp3T/NCQJFj3MGLKnFKULg==, tableContent=null), ArticleFig(id=1244321239376970701, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=EN, label=Fig. 2, caption=
FCNN structure, figureFileSmall=llEPRBApquscVIXqnd4rIw==, figureFileBig=A/Ynbtjq2NqLwXfRRpwWmw==, tableContent=null), ArticleFig(id=1244321239498605523, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=CN, label=图2, caption=
FCNN结构, figureFileSmall=llEPRBApquscVIXqnd4rIw==, figureFileBig=A/Ynbtjq2NqLwXfRRpwWmw==, tableContent=null), ArticleFig(id=1244321239628628953, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=EN, label=Fig. 3, caption=
Comparison of filtering effects (a) Moving average filter, (b) Savitzky-Golay filter, figureFileSmall=rWpwn/BpWSQD5zp1o6w0yw==, figureFileBig=MIAs/mfLiziJov0Rk7vyPA==, tableContent=null), ArticleFig(id=1244321239750263771, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=CN, label=图3, caption=
滤波效果对比, figureFileSmall=rWpwn/BpWSQD5zp1o6w0yw==, figureFileBig=MIAs/mfLiziJov0Rk7vyPA==, tableContent=null), ArticleFig(id=1244321239855121375, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=EN, label=Fig. 4, caption=
Gaussian fitting of blood pressure pulse wave envelope (a) Comparison of multi-gaussian fitting effects, (b) Decomposition diagram of double Gaussian functions, (c) Heatmap of correlation between double gaussian function parameters and patient physiological parameters, figureFileSmall=B2BlBhtwvWN5wuYYahEjrw==, figureFileBig=UfhdlFfaV3jvJIupDKTT7g==, tableContent=null), ArticleFig(id=1244321239959978978, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=CN, label=图4, caption=
血压脉搏波包络高斯拟合, figureFileSmall=B2BlBhtwvWN5wuYYahEjrw==, figureFileBig=UfhdlFfaV3jvJIupDKTT7g==, tableContent=null), ArticleFig(id=1244321240048059365, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=EN, label=Fig. 5, caption=
Heatmap of variable correlation analysis in MAP prediction, figureFileSmall=nDXRc0GWKcr22N3Vcsu55Q==, figureFileBig=Lj7X2Ps2CwDVwn23kpiRlQ==, tableContent=null), ArticleFig(id=1244321240161305571, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=CN, label=图5, caption=
MAP预测中变量相关性分析热力图, figureFileSmall=nDXRc0GWKcr22N3Vcsu55Q==, figureFileBig=Lj7X2Ps2CwDVwn23kpiRlQ==, tableContent=null), ArticleFig(id=1244321240257774566, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=EN, label=Fig. 6, caption=
Comparison of MAP prediction and residual analysis between FCNN, linear regression, and empirical formulas (a) Comparison of true values and predicted values, (b) Residual comparison, (c) Bland-Altman analysis, (d) ROC curve analysis, figureFileSmall=AZfyBQNR0C0mSsWFnAfRrw==, figureFileBig=+Zfgd7XfZYFWxmE0OQB0bQ==, tableContent=null), ArticleFig(id=1244321240375215081, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=CN, label=图6, caption=
FCNN、线性回归与经验公式的MAP预测对比及残差分析, figureFileSmall=AZfyBQNR0C0mSsWFnAfRrw==, figureFileBig=+Zfgd7XfZYFWxmE0OQB0bQ==, tableContent=null), ArticleFig(id=1244321240484266988, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=EN, label=Tab. 1, caption=
Metrological requirements met by the acquisition device
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 要求 |
|---|
| 静态压力测量范围 | 0~34.7 kPa/(0~260 mmHg) |
| 静态压力示值最大允许误差 | ±0.4 kPa(±3 mmHg)或者±2%(两者取其大) |
| 血压示值重复性 | ≤0.4 kPa(3 mmHg) |
| 充气 | 10 s内提供足够的空气使得200 cm3容器内的压力达到40 kPa(300 mmHg) |
| 听诊法装置的降压(放气)速率 | 维持0.3~0.4 kPa/s放气速率(2~3 mmHg/s) |
| 快速排气 | 随着阀门全开,压力从34.7 kPa降至2.0 kPa(260 mmHg降至15 mmHg)的时间不得超过10 s。对于具备新生儿/婴儿模式测量能力的血压计,压力从20.0 kPa(150 mmHg)降至0.7 kPa(5 mmHg)的时间不得超过5 s |
| 外观 | 标明产品名称、规格型号及编号、制造厂家。血压计各部件连接应可靠,按键活动应自如,无卡键和影响操作现象。显示数字应清晰可辨,不存在缺划、断划的现象。血压计计量单位的显示应以kPa或mmHg表示,血压计显示分辨力应为0.1 kPa(1 mmHg) |
| 气压系统气密性 | 空气泄漏导致的气压系统压力变化应不超过0.8 kPa/min(6 mmHg/min) |
| 对气囊和袖带的要求 | 气囊长度应约为袖带预定范围中点处肢体周长的0.8倍。气囊的宽度至少应为袖带预定范围中点处肢体周长的0.4倍 |
), ArticleFig(id=1244321240576541680, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=CN, label=表1, caption=
采集装置满足的计量要求
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 要求 |
|---|
| 静态压力测量范围 | 0~34.7 kPa/(0~260 mmHg) |
| 静态压力示值最大允许误差 | ±0.4 kPa(±3 mmHg)或者±2%(两者取其大) |
| 血压示值重复性 | ≤0.4 kPa(3 mmHg) |
| 充气 | 10 s内提供足够的空气使得200 cm3容器内的压力达到40 kPa(300 mmHg) |
| 听诊法装置的降压(放气)速率 | 维持0.3~0.4 kPa/s放气速率(2~3 mmHg/s) |
| 快速排气 | 随着阀门全开,压力从34.7 kPa降至2.0 kPa(260 mmHg降至15 mmHg)的时间不得超过10 s。对于具备新生儿/婴儿模式测量能力的血压计,压力从20.0 kPa(150 mmHg)降至0.7 kPa(5 mmHg)的时间不得超过5 s |
| 外观 | 标明产品名称、规格型号及编号、制造厂家。血压计各部件连接应可靠,按键活动应自如,无卡键和影响操作现象。显示数字应清晰可辨,不存在缺划、断划的现象。血压计计量单位的显示应以kPa或mmHg表示,血压计显示分辨力应为0.1 kPa(1 mmHg) |
| 气压系统气密性 | 空气泄漏导致的气压系统压力变化应不超过0.8 kPa/min(6 mmHg/min) |
| 对气囊和袖带的要求 | 气囊长度应约为袖带预定范围中点处肢体周长的0.8倍。气囊的宽度至少应为袖带预定范围中点处肢体周长的0.4倍 |
), ArticleFig(id=1244321240681399283, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=EN, label=Tab. 2, caption=
Basic epidemiological information of the patients
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | 数值 |
|---|
| 男/女 | 139/206 |
| 年龄/岁 | 56.03±20.61 |
| 臂围/cm | 25.87±3.91 |
| 心率/min-1 | 81.59±19.06 |
| MAP/mmHg | 93.41±13.89 |
| SBP/mmHg | 124.41±20.87 |
| DBP/mmHg | 75.36±11.02 |
), ArticleFig(id=1244321240840782840, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=CN, label=表2, caption=
患者基本流行病学信息
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变量 | 数值 |
|---|
| 男/女 | 139/206 |
| 年龄/岁 | 56.03±20.61 |
| 臂围/cm | 25.87±3.91 |
| 心率/min-1 | 81.59±19.06 |
| MAP/mmHg | 93.41±13.89 |
| SBP/mmHg | 124.41±20.87 |
| DBP/mmHg | 75.36±11.02 |
), ArticleFig(id=1244321240958223357, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=EN, label=Tab. 3, caption=
Comparison of filtering effects
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 患者1 | 患者2 |
|---|
| 移动平滑 | S-G | 移动平滑 | S-G |
|---|
| SNR/dB | 7.35 | 20.41 | 7.42 | 20.77 |
| MSE | 7 398.70 | 365.66 | 8 800.61 | 407.11 |
| PSNR/dB | 17.16 | 30.22 | 17.31 | 30.65 |
| r | 0.91 | 1.00 | 0.91 | 1.00 |
), ArticleFig(id=1244321241105022976, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=CN, label=表3, caption=
滤波效果比较
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| 参数 | 患者1 | 患者2 |
|---|
| 移动平滑 | S-G | 移动平滑 | S-G |
|---|
| SNR/dB | 7.35 | 20.41 | 7.42 | 20.77 |
| MSE | 7 398.70 | 365.66 | 8 800.61 | 407.11 |
| PSNR/dB | 17.16 | 30.22 | 17.31 | 30.65 |
| r | 0.91 | 1.00 | 0.91 | 1.00 |
), ArticleFig(id=1244321241260212230, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=EN, label=Tab. 4, caption=
Comparison of Gaussian model fitting performance
, figureFileSmall=null, figureFileBig=null, tableContent=
| 拟合类型 | R2 | AIC | BIC |
|---|
| 单高斯 | 0.913 1 | -140.81 | -135.47 |
| 双高斯 | 0.955 8 | -166.46 | -155.77 |
| 三高斯 | 0.955 3 | -164.35 | -148.33 |
| 四高斯 | 0.965 6 | -172.44 | -151.08 |
), ArticleFig(id=1244321242816299020, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=CN, label=表4, caption=
高斯模型拟合性能对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 拟合类型 | R2 | AIC | BIC |
|---|
| 单高斯 | 0.913 1 | -140.81 | -135.47 |
| 双高斯 | 0.955 8 | -166.46 | -155.77 |
| 三高斯 | 0.955 3 | -164.35 | -148.33 |
| 四高斯 | 0.965 6 | -172.44 | -151.08 |
), ArticleFig(id=1244321242937933837, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=EN, label=Tab. 5, caption=
Comparison of MAP prediction methods using five-fold cross-validation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 实验轮次 | 经验公式 | 线性回归 | FCNN |
|---|
| MSE | MAPE | R2 | MSE | MAPE | R2 | MSE | MAPE | R2 |
|---|
| 1 | 21.70 | 0.041 | 0.88 | 20.91 | 0.041 | 0.89 | 17.59 | 0.037 | 0.91 |
| 2 | 30.75 | 0.047 | 0.84 | 19.93 | 0.039 | 0.89 | 19.90 | 0.038 | 0.89 |
| 3 | 34.70 | 0.052 | 0.84 | 21.87 | 0.041 | 0.90 | 19.90 | 0.039 | 0.91 |
| 4 | 31.53 | 0.049 | 0.83 | 20.63 | 0.038 | 0.89 | 19.54 | 0.038 | 0.90 |
| 5 | 36.18 | 0.053 | 0.80 | 23.49 | 0.045 | 0.87 | 22.89 | 0.043 | 0.88 |
| 平均 | 30.97±5.05 | 0.048±0.004 | 0.84±0.03 | 21.36±1.23 | 0.041±0.002 | 0.89±0.01 | 19.76±1.79 | 0.039±0.001 | 0.90±0.01 |
), ArticleFig(id=1244321243034402832, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=CN, label=表5, caption=
五折交叉验证MAP预测方法效果对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 实验轮次 | 经验公式 | 线性回归 | FCNN |
|---|
| MSE | MAPE | R2 | MSE | MAPE | R2 | MSE | MAPE | R2 |
|---|
| 1 | 21.70 | 0.041 | 0.88 | 20.91 | 0.041 | 0.89 | 17.59 | 0.037 | 0.91 |
| 2 | 30.75 | 0.047 | 0.84 | 19.93 | 0.039 | 0.89 | 19.90 | 0.038 | 0.89 |
| 3 | 34.70 | 0.052 | 0.84 | 21.87 | 0.041 | 0.90 | 19.90 | 0.039 | 0.91 |
| 4 | 31.53 | 0.049 | 0.83 | 20.63 | 0.038 | 0.89 | 19.54 | 0.038 | 0.90 |
| 5 | 36.18 | 0.053 | 0.80 | 23.49 | 0.045 | 0.87 | 22.89 | 0.043 | 0.88 |
| 平均 | 30.97±5.05 | 0.048±0.004 | 0.84±0.03 | 21.36±1.23 | 0.041±0.002 | 0.89±0.01 | 19.76±1.79 | 0.039±0.001 | 0.90±0.01 |
), ArticleFig(id=1244321243101511698, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=EN, label=Tab. 6, caption=
Relationship between estimation errors and physiological parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | r | 分组误差(按照参数分组) |
|---|
| SBP/mmHg | -0.05 | <120:-0.22;120~140:-0.20;140~160:0.67;>160:-2.59 |
| DBP/mmHg | -0.10 | <80:0.36;80~90:-1.26;90~100:-2.06;>100:-5.55 |
| 年龄/岁 | -0.16 | <12:1.36;12~40:1.39;40~65:-1.39;>60:-0.29 |
| 臂围/cm | -0.14 | <25:-0.17;12~40:0.32;30~35:-3.27;>35:-4.92 |
| 心率/min-1 | 0.12 | <60:0.35;60-80:-0.74;80-100:-0.04;>100:1.03 |
), ArticleFig(id=1244321243218952214, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=CN, label=表6, caption=
估测误差与各生理参数的关系
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | r | 分组误差(按照参数分组) |
|---|
| SBP/mmHg | -0.05 | <120:-0.22;120~140:-0.20;140~160:0.67;>160:-2.59 |
| DBP/mmHg | -0.10 | <80:0.36;80~90:-1.26;90~100:-2.06;>100:-5.55 |
| 年龄/岁 | -0.16 | <12:1.36;12~40:1.39;40~65:-1.39;>60:-0.29 |
| 臂围/cm | -0.14 | <25:-0.17;12~40:0.32;30~35:-3.27;>35:-4.92 |
| 心率/min-1 | 0.12 | <60:0.35;60-80:-0.74;80-100:-0.04;>100:1.03 |
), ArticleFig(id=1244321243328004122, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=EN, label=Tab. 7, caption=
Sensitivity comparison of empirical formula, linear regression, and FCNN
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| 参数 | 经验公式 | 线性回归 | FCNN |
|---|
| SBP | 0.33 | 0.38 | 0.38 |
| DBP | 0.67 | 0.58 | 0.56 |
| 臂围 | 0 | 0.23 | 0.15 |
| 心率 | 0 | 0.04 | 0.04 |
), ArticleFig(id=1244321243432861726, tenantId=1146029695717560320, journalId=1244284848500682798, articleId=1244321219307225946, language=CN, label=表7, caption=
经验公式、线性回归与FCNN的敏感性对比
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| 参数 | 经验公式 | 线性回归 | FCNN |
|---|
| SBP | 0.33 | 0.38 | 0.38 |
| DBP | 0.67 | 0.58 | 0.56 |
| 臂围 | 0 | 0.23 | 0.15 |
| 心率 | 0 | 0.04 | 0.04 |
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