期刊文献+

人体躯干模型中肺的存在对体表电位分布的影响 被引量:2

EFFECTS OF LUNGE ON THE BODY SURFACE POTENTIALSIN A REALISTIC TORSO MODEL
下载PDF
导出
摘要 在所建三维人体躯干模型的基础上 ,给出了如何应用边界元方法对非均匀人体场域进行求解。在设定心外膜电位分别呈现为单偶极子和双偶极子时 ,求出相应非均匀场域中的体表电位分布 ,并将它们与相同情况下均匀场域的体表电位分布进行分析比较。结果表明 :躯干模型中肺的存在虽然对体表电位中极值的大小和位置没有太大影响 ,但却较大程度地改变了整个体表电位的分布状况.具体地说,就是由于肺的存在使得体表电位值较均匀时的相对误差高达73.6 % ,而相关系数只有0.851。 A realistic 3-D torso model, which includes the heart and lung and retains the relative size and position of them within the body, was used to test the effects of the lung on body surface potentials. The boundary element method was used to construct a transfer matrix relating the epicardial potentials to the body surface potentials, for the inhomogeneous form of the model. The body surface potentials were obtained from the assumed epicardial potentials with a dsingle ipole or double dipoles in the inhomogeneous field respectively, and compared with those in the homogeneous field. The results show that although the lung has very little effect on the maximal potential and the minimal one at the same nodes, they changed the potentials of other nodes seriously. In the other words, the relative errors of the body surface potentials between the fields attain to 73.6%, and the correlative coefficient is 0.851.
作者 姚德贵 何为
出处 《生物物理学报》 CAS CSCD 北大核心 2000年第4期748-754,共7页 Acta Biophysica Sinica
关键词 人体躯干模型 体表电位分布图 心电图 Human torso model Inhomogeneous Forward problem of electrocardiography Body surface potential mappinp
  • 引文网络
  • 相关文献

参考文献5

  • 1何为,杨浩,吴琪,刘和平.人体骨骼肌肉层对心电传导和体表电位标测的影响[J].生物物理学报,1998,14(4):697-705. 被引量:1
  • 2符影杰.心电场仿真研究:浙江大学博士论文[M].,1990,6..
  • 3Wang Yunhua,IEEE Transactions on Biomedical Engineering,1998年,45卷,1期,131页
  • 4符影杰,博士学位论文,1990年
  • 5《数学手册》编写组,数学手册,1979年

二级参考文献2

  • 1Lu Weixue,IEEE Trans Biomed Eng,1996年,43卷,2期,211页
  • 2何为,Biomed Sci Instrum,1993年,29卷,473页

同被引文献41

  • 1杨中服,李川勇.表征心室复极不一致有效参数的仿真研究[J].生物物理学报,2004,20(5):399-402. 被引量:1
  • 2李忠元.电磁场边界元素法[M].北京:北京工业出版社,1988..
  • 3Moshe Rosenfeld,Ronen Tanami.Numerical solution of the potential due to dipole sources in volume conductors with arbitrary geometry and conductivity.IEEE Trans BME,1996;l43 (7)∶679
  • 4Pesola K,Tenner U.Multichannel magnetocardiographic measurements with a physical thorax phantom.Medical & Biological Engineering & Computing,1999;37(2)∶7
  • 5He Wei.Numerical simulation for inverse problem of ECG in terms of thorax with anisotropic muscle layers.Aachen:Shaker Verlag,1997
  • 6Brooks DH,Ahmad GF.Inverse electrocardiography by simultaneous imposition of multiple constraints.IEEE Trans BME 1999;46 (1)∶3
  • 7魏大铭 吕维雪.求解心外膜电位的有限元方法研究[J].中国生物医学工程学报,1987,16(3):155-155.
  • 8Quan W, Evans SJ, Hastings HM. Efficient integration of a realistic two-dimensional cardiac tissue model by domain decomposition [J ]. IEEE Trans BME, 1998, 45: 372-385.
  • 9Skouibine K, Trayanova N, Moore P. Anode/cathode make and break phenomena during defibrillation: Does electroporation make a difference?[J]. IEEE Trans BME, 1999, 46: 769-777.
  • 10Buist M, Sands G, Hunter P, et al. A deformable finite element derived finite difference method for cardiac activation problems[J]. Ann BME, 2003, 31: 577-588.

引证文献2

;
使用帮助 返回顶部