By Raymond J. Millington (auth.), Niels Kuster, Quirino Balzano, James C. Lin (eds.)
Recently, there was curiosity through regulators, the general public and the brands of instant units within the concerns with regards to the protection of radio frequency (RF) power. those concerns require an knowing of the clinical underpinnings of either physics of RF strength and mobile biology. This e-book is designed to supply accurately such cross-functional services. The editors of this ebook intend to supply a competent resource for a valid medical realizing of the problems and to stimulate destiny medical advances during this sector. for this reason, the viewers for this publication comprises such diversified teams as scientists, governmental policy-makers and regulatory our bodies, representatives of and the general public at large.
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The most complex phantoms used in this study of the absorption dependence upon modeling were three independently discretized head phantoms based on MRI scans of three different adults, whereby 13 different tissue types were distinguished. 1. The most simple phantom was a homogeneous sphere of 200 mm diameter. e. 2). e. to the RF current distribution versus the distance. Most of the power is absorbed close to the radiating structure and focusing effects are negligible. • The local SAR distribution depends significantly on the local distribution of the electrical tissue properties.
3) The reference line defined above should lie within the reference plane defined by the following three points: auditory canal openings of both ears and the center of the closed mouth. (4) The intended use position is defined by an angle of 80° between the reference line of the phone and the line connecting both auditory canal openings. If this position is not applicable, the manufacturer should specify in detail the intended position of use. peak absorption, the test should ensure that the MTE complies with the safety standard for the usual variations of the intended use.
On the other hand, usage at slight variance of this intended use position can unavoidably occur. Since even small variations of the position may considerably alter the spatial REQUIREMENTS FOR COMPLIANCE TESTING OF MTE 29 Fig. 5 Illustration of the intended use position as suggest by a working group of CENELEC drafting a report under EU mandate M/032 (see Chapter 11). The intended use position is generally established by fully extending the antenna of the MTE. Definition: (1) The center of the ear-piece should be placed directly at the entrance of the auditory canal.