PMID: 8945858Sep 1, 1996Paper

Effect of skin impedance on image quality and variability in electrical impedance tomography: a model study

Medical & Biological Engineering & Computing
K G Boone, David S Holder

Abstract

A computer simulation is used to investigate the relationship between skin impedance and image artefacts in electrical impedance tomography. Sets of electrode impedance are generated with a pseudo-random distribution and used to introduce errors in boundary voltage measurements. To simplify the analysis, the non-idealities in the current injection circuit are replaced by a fixed common-mode error term. The boundary voltages are reconstructed into images and inspected. Where the simulated skin impedance remains constant between measurements, large impedances (> 2k omega) do not cause significant degradation of the image. Where the skin impedances 'drift' between measurements, a drift of 5% from a starting impedance of 100 omega is sufficient to cause significant image distortion. If the skin impedances vary randomly between measurements, they have to be less than 10 omega to allow satisfactory images. Skin impedances are typically 100-200 omega at 50 kHz on unprepared skin. These values are sufficient to cause image distortion if they drift over time. It is concluded that the patient's skin should be abraded to reduce impedance, and measurements should be avoided in the first 10 min after electrode placement.

References

May 1, 1990·Clinical Physics and Physiological Measurement : an Official Journal of the Hospital Physicists' Association, Deutsche Gesellschaft Für Medizinische Physik and the European Federation of Organisations for Medical Physics·R GaddP Rolfe
Apr 1, 1993·IEEE Transactions on Bio-medical Engineering·P HuaW J Tompkins
Jan 1, 1993·IEEE Transactions on Bio-medical Engineering·P HuaW J Tompkins

❮ Previous
Next ❯

Citations

May 4, 2010·Annals of Biomedical Engineering·Yinsuo YinXiuzhen Dong
Jul 18, 2008·Medical & Biological Engineering & Computing·Tao DaiAndy Adler
Aug 6, 2009·Medical & Biological Engineering & Computing·Zhenyu JiRuigang Liu
Jan 23, 2003·Medical Engineering & Physics·Y Zou, Z Guo
Jan 30, 2009·Medical Physics·Simone BaloccoChristian Cachard
Jul 12, 2012·The Journal of the Acoustical Society of America·An Hoai PhamJørgen Arendt Jensen
Jul 12, 2012·The Journal of the Acoustical Society of America·Goutam Ghoshal, Michael L Oelze
Apr 10, 2009·The Journal of the Acoustical Society of America·Jean Martial MariChristian Cachard
Dec 2, 2010·The Journal of the Acoustical Society of America·Jean-Luc Robert, Mathias Fink
Feb 12, 2009·The Journal of the Acoustical Society of America·Jean-Luc Robert, Mathias Fink
Jun 21, 2012·The Journal of the Acoustical Society of America·Fabrice PrieurHans Torp
Dec 3, 2008·The Journal of the Acoustical Society of America·Duo Chen, Robert J McGough
Sep 10, 2014·Biomedical Engineering Online·Xiaochang PanJianwen Luo
Oct 12, 2014·Biomedical Engineering Online·Jin Ho Sung, Jong Seob Jeong
Jan 16, 1998·Journal of Medical Engineering & Technology·K BooneB Brown
Dec 4, 2010·Medical Image Analysis·Sean GillParvin Mousavi
Aug 28, 2007·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Youlian HongDaniel Tik-Pui Fong
Sep 29, 2011·Journal of Biomedical Optics·Jun XiaLihong V Wang
May 12, 2006·IEEE Transactions on Bio-medical Engineering·Julian GuerreroSavvas Nicolaou
Jul 4, 2003·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Stephen A McAleaveyGregg E Trahey
Aug 24, 2011·IEEE Transactions on Bio-medical Engineering·Doğa GürsoyHermann Scharfetter
Nov 7, 2008·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·M BarvaC Cachard
Jul 21, 2010·IEEE Transactions on Medical Imaging·Nghia Q NguyenMichael F Insana
May 21, 2010·IEEE Transactions on Bio-medical Engineering·Marián UhercíkChristian Cachard
Jul 7, 2016·European Journal of Clinical Nutrition·L NescolardeM A Camina-Martín
Apr 26, 2017·Optics Express·Martin PekařMartin B van der Mark
Sep 1, 2015·Ultrasonic Imaging·Tiexiang WenYaoqin Xie
Sep 4, 2015·Ultrasonic Imaging·Babak Mohammadzadeh Asl
Aug 8, 2007·Ultrasonic Imaging·Stephen A McAleaveyJarrod Orszulak
Aug 10, 2010·Ultrasonic Imaging·Shih-Ying WuPai-Chi Li
Aug 10, 2010·Ultrasonic Imaging·Paul LindenMichael L Oelze
Oct 20, 2005·Ultrasonic Imaging·Meng-Lin LiPai-Chi Li
Feb 21, 2014·Ultrasonic Imaging·Saraniya Ovireddy, Ezhilarasi Muthusamy
Mar 16, 2013·Ultrasonic Imaging·Etana C Elegbe, Stephen A McAleavey
May 13, 2010·Ultrasonic Imaging·Stephen McAleaveyEtana Elegbe
Nov 23, 2012·The Journal of Vascular Access·Koen Van CanneytPatrick Segers
Jun 13, 2017·Physics in Medicine and Biology·Deep BeraHendrik J Vos
Jan 12, 2017·Physics in Medicine and Biology·Feifei ZhaoJianwen Luo

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.