James C. Lin's Advances in Electromagnetic Fields in Living Systems PDF
By James C. Lin
The target of this fourth quantity within the sequence Advances in Electromagnetic Fields in dwelling platforms remains similar to past volumes: so as to add a couple of major advances during this region of analysis to clinical literature.
In common, the interplay of electromagnetic fields and waves with organic platforms is frequency-dependent. in addition, the mechanisms of interplay for fields at low frequencies are very various from these at excessive frequencies. whereas major advances are being made on many fronts, a unique emphasis of this quantity is on present and destiny biomedical purposes of electromagnetic fields, ranging in frequency from quasi-static to the optical area. every one bankruptcy includes a finished presentation of a subject of present curiosity and turning out to be significance.
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Additional resources for Advances in Electromagnetic Fields in Living Systems
Peters et al. during the cardiac cycle. The latter model is based on the fact that the dimension of the fetal heart is small in comparison to the distance between the dipole and the point of observation. The volume conductor model is very complicated. There are several reasons. First, many tissues which differ in conductivity are present. Second, their conductivities are not well known. Finally, the volume conductor depends on both the stage of pregnancy and position of the fetus. For an adult heart the volume conductor is usually described by a model of the torso that consists of regions that are piecewise homogeneous and isotropic.
22:198–200. , Miyashita T. , 2001, Detection of cardiac hypertrophy in the fetus by approximation of the current dipole using magnetocardiography, Pediatric. , 50:242–245. , Schneider U. , 2001, The application of fetal magnetocardiography to investigate fetal arrhythmia and congenital heart defects, Prenat. , 21:176– 182. , 1963, Transmission characteristics in fetal electrocardiography, pp. 134–135 In: 16th annual conference on engineering in medicine and biology. P. , 1974, The fetal magnetocardiogram, J.
Strictly speaking, the SQUID is a sensor for a change in the magnetic ﬂux, the latter being the magnetic ﬁeld component perpendicular to the SQUID ring integrated over the area of the ring. A bare SQUID is fairly insensitive to magnetic ﬁelds, because in general the area of the SQUID loop is very small. Therefore, a superconducting input circuit is necessary. This consists of a pick-up coil, sensing the magnetic ﬁeld, and an input coil that is closely coupled to the SQUID. A magnetic ﬁeld has a strength and an orientation and can be represented by a vector.
Advances in Electromagnetic Fields in Living Systems by James C. Lin