Age-dependent tissue-specific exposure of cell phone users

Christ, A; Gosselin, M-C; Christopoulou, M; Kuhn, S; Kuster, N

dc.contributor.author	Christ, A	en
dc.contributor.author	Gosselin, M-C	en
dc.contributor.author	Christopoulou, M	en
dc.contributor.author	Kuhn, S	en
dc.contributor.author	Kuster, N	en
dc.date.accessioned	2014-03-01T01:32:36Z
dc.date.available	2014-03-01T01:32:36Z
dc.date.issued	2010	en
dc.identifier.issn	0031-9155	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20191
dc.subject.classification	Engineering, Biomedical	en
dc.subject.classification	Radiology, Nuclear Medicine & Medical Imaging	en
dc.subject.other	Bone marrow	en
dc.subject.other	Brain tissue	en
dc.subject.other	Cell phone	en
dc.subject.other	High conductivity	en
dc.subject.other	Induced field	en
dc.subject.other	Pineal gland	en
dc.subject.other	Specific absorption rate	en
dc.subject.other	Tissue properties	en
dc.subject.other	Absorption	en
dc.subject.other	Brain	en
dc.subject.other	Histology	en
dc.subject.other	Magnetic field effects	en
dc.subject.other	Magnetic resonance imaging	en
dc.subject.other	Mobile devices	en
dc.subject.other	Mobile phones	en
dc.subject.other	Resonance	en
dc.subject.other	Telephone	en
dc.subject.other	Tissue	en
dc.subject.other	Telephone sets	en
dc.subject.other	adult	en
dc.subject.other	aging	en
dc.subject.other	article	en
dc.subject.other	biological model	en
dc.subject.other	brain	en
dc.subject.other	child	en
dc.subject.other	computer simulation	en
dc.subject.other	female	en
dc.subject.other	human	en
dc.subject.other	male	en
dc.subject.other	methodology	en
dc.subject.other	mobile phone	en
dc.subject.other	physiology	en
dc.subject.other	preschool child	en
dc.subject.other	radiation dose	en
dc.subject.other	radiation exposure	en
dc.subject.other	radiometry	en
dc.subject.other	relative biologic effectiveness	en
dc.subject.other	Adult	en
dc.subject.other	Aging	en
dc.subject.other	Brain	en
dc.subject.other	Cellular Phone	en
dc.subject.other	Child	en
dc.subject.other	Child, Preschool	en
dc.subject.other	Computer Simulation	en
dc.subject.other	Female	en
dc.subject.other	Humans	en
dc.subject.other	Male	en
dc.subject.other	Models, Biological	en
dc.subject.other	Radiation Dosage	en
dc.subject.other	Radiometry	en
dc.subject.other	Relative Biological Effectiveness	en
dc.subject.other	Young Adult	en
dc.title	Age-dependent tissue-specific exposure of cell phone users	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0031-9155/55/7/001	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0031-9155/55/7/001	en
heal.identifier.secondary	001	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	The peak spatial specific absorption rate (SAR) assessed with the standardized specific anthropometric mannequin head phantom has been shown to yield a conservative exposure estimate for both adults and children using mobile phones. There are, however, questions remaining concerning the impact of age-dependent dielectric tissue properties and age-dependent proportions of the skull, face and ear on the global and local absorption, in particular in the brain tissues. In this study, we compare the absorption in various parts of the cortex for different magnetic resonance imaging-based head phantoms of adults and children exposed to different models of mobile phones. The results show that the locally induced fields in children can be significantly higher (>3 dB) in subregions of the brain (cortex, hippocampus and hypothalamus) and the eye due to the closer proximity of the phone to these tissues. The increase is even larger for bone marrow (>10 dB) as a result of its significantly high conductivity. Tissues such as the pineal gland show no increase since their distances to the phone are not a function of age. This study, however, confirms previous findings saying that there are no age-dependent changes of the peak spatial SAR when averaged over the entire head. © 2010 Institute of Physics and Engineering in Medicine.	en
heal.publisher	IOP PUBLISHING LTD	en
heal.journalName	Physics in Medicine and Biology	en
dc.identifier.doi	10.1088/0031-9155/55/7/001	en
dc.identifier.isi	ISI:000275756200001	en
dc.identifier.volume	55	en
dc.identifier.issue	7	en
dc.identifier.spage	1767	en
dc.identifier.epage	1783	en