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Critical Reviews™ in Biomedical Engineering
SJR: 0.207 SNIP: 0.376 CiteScore™: 0.79

ISSN Imprimer: 0278-940X
ISSN En ligne: 1943-619X

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Critical Reviews™ in Biomedical Engineering

DOI: 10.1615/CritRevBiomedEng.v24.i4-6.60
pages 655-677

Bioelectrical Impedance Techniques in Medicine
Part III: Impedance Imaging
Third Section: Medical Applications

Jean-Pierre Morucci
Institut National de la Sante et de la Recherche Medicale—INSERM U305, Recherche et Transfert Industriel en Technologie Biomedicale, Centre Hospitalier Hotel Dieu, 31052 Toulouse Cedex, France
Bernard Rigaud
Institut National de la Sante et de la Recherche Medicale—INSERM U305, Recherche et Transfert Industriel en Technologie Biomedicale, Centre Hospitalier Hotel Dieu, 31052 Toulouse Cedex, France

RÉSUMÉ

In several areas of clinical medicine, electrical impedance tomography could offer significant advantages over existing methods. These advantages have been supported by preliminary studies or by validation studies, which are described. The suggested applications are reviewed in this section. They mainly concern developments in impedance variations on brain, lung (neonatal, edema, emphysema), and heart; changes in blood volume, gastrointestinal system (gastric emptying, gastroesophageal reflux, pharyngeal transit time); pelvis (pelvis congestion); and thermal mapping in hyperthermia and breast (tissue characterization). The conductivity information at one frequency in a pixel is insufficient to take into account the very complex physiological mechanisms that underlie the observed impedance changes. To gain a better understanding of these mechanisms, research is currently being carried out on imaging of the imaginary part, parametric imaging, spectroscopic imaging, and 3D imaging, which are developed at the end of this section.


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