{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T16:03:38Z","timestamp":1768838618119,"version":"3.49.0"},"reference-count":36,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2017,8,31]],"date-time":"2017-08-31T00:00:00Z","timestamp":1504137600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Electrical Impedance Tomography (EIT) is a medical imaging technique that has been recently used to realize stretchable pressure sensors. In this method, voltage measurements are taken at electrodes placed at the boundary of the sensor and are used to reconstruct an image of the applied touch pressure points. The drawback with EIT-based sensors, however, is their low spatial resolution due to the ill-posed nature of the EIT reconstruction. In this paper, we show our performance evaluation of different EIT drive patterns, specifically strategies for electrode selection when performing current injection and voltage measurements. We compare voltage data with Signal-to-Noise Ratio (SNR) and Boundary Voltage Changes (BVC), and study image quality with Size Error (SE), Position Error (PE) and Ringing (RNG) parameters, in the case of one-point and two-point simultaneous contact locations. The study shows that, in order to improve the performance of EIT based sensors, the electrode selection strategies should dynamically change correspondingly to the location of the input stimuli. In fact, the selection of one drive pattern over another can improve the target size detection and position accuracy up to 4.7% and 18%, respectively.<\/jats:p>","DOI":"10.3390\/s17091999","type":"journal-article","created":{"date-parts":[[2017,8,31]],"date-time":"2017-08-31T10:54:44Z","timestamp":1504176884000},"page":"1999","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":67,"title":["A Quantitative Evaluation of Drive Pattern Selection for Optimizing EIT-Based Stretchable Sensors"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0943-9963","authenticated-orcid":false,"given":"Stefania","family":"Russo","sequence":"first","affiliation":[{"name":"Autonomous System and Robotics Research Centre, University of Salford, Manchester M5 4WT, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Samia","family":"Nefti-Meziani","sequence":"additional","affiliation":[{"name":"Autonomous System and Robotics Research Centre, University of Salford, Manchester M5 4WT, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicola","family":"Carbonaro","sequence":"additional","affiliation":[{"name":"Research Centre E. Piaggio, University of Pisa, 56122 Pisa, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9848-4071","authenticated-orcid":false,"given":"Alessandro","family":"Tognetti","sequence":"additional","affiliation":[{"name":"Research Centre E. Piaggio, University of Pisa, 56122 Pisa, Italy"},{"name":"Department of Information Engineering, University of Pisa, 56122 Pisa, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,8,31]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"133","DOI":"10.1109\/10.341825","article-title":"A real-time electrical impedance tomography system for clinical use-design and preliminary results","volume":"42","author":"Smith","year":"1995","journal-title":"IEEE Trans. Biomed. Eng."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"713","DOI":"10.1097\/CCM.0b013e3181958d2f","article-title":"Principles of electrical impedance tomography and its clinical application","volume":"37","author":"Bodenstein","year":"2009","journal-title":"Crit. Care Med."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"045034","DOI":"10.1088\/0964-1726\/23\/4\/045034","article-title":"Damage detection and conductivity evolution in carbon nanofiber epoxy via electrical impedance tomography","volume":"23","author":"Tallman","year":"2014","journal-title":"Smart Mater. Struct."},{"key":"ref_4","unstructured":"Knight, R., and Lipczynski, R. (1990, January 1\u20134). The use of EIT techniques to measure interface pressure. Proceedings of the Twelfth Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Philadelphia, PA, USA."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"2001","DOI":"10.1109\/JSEN.2014.2375346","article-title":"Electrical impedance tomography for artificial sensitive robotic skin: A review","volume":"15","author":"Rye","year":"2015","journal-title":"IEEE Sens. J."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Wang, H., de Boer, G., Kow, J., Alazmani, A., Ghajari, M., Hewson, R., and Culmer, P. (2016). Design Methodology for Magnetic Field-Based Soft Tri-Axis Tactile Sensors. Sensors, 16.","DOI":"10.3390\/s16091356"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Tomo, T.P., Somlor, S., Schmitz, A., Jamone, L., Huang, W., Kristanto, H., and Sugano, S. (2016). Design and characterization of a three-axis hall effect-based soft skin sensor. Sensors, 16.","DOI":"10.3390\/s16040491"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1109\/LRA.2015.2505061","article-title":"A Conformable Force\/Tactile Skin for Physical Human\u2013Robot Interaction","volume":"1","author":"Cirillo","year":"2016","journal-title":"IEEE Robot. Autom. Lett."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1627","DOI":"10.1177\/0278364912455441","article-title":"Interpretation of the modality of touch on an artificial arm covered with an EIT-based sensitive skin","volume":"31","author":"Rye","year":"2012","journal-title":"Int. J. Robot. Res."},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Nagakubo, A., Alirezaei, H., and Kuniyoshi, Y. (2007, January 15\u201318). A deformable and deformation sensitive tactile distribution sensor. Proceedings of the IEEE International Conference on Robotics and Biomimetics, 2007 (ROBIO 2007), Sanya, China.","DOI":"10.1109\/ROBIO.2007.4522352"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"485","DOI":"10.1016\/j.carbon.2015.08.029","article-title":"Tactile imaging and distributed strain sensing in highly flexible carbon nanofiber\/polyurethane nanocomposites","volume":"95","author":"Tallman","year":"2015","journal-title":"Carbon"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Holder, D.S. (2004). Electrical Impedance Tomography: Methods, History and Applications, CRC Press.","DOI":"10.1201\/9781420034462.ch4"},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Xu, C., Dong, X., Shi, X., Fu, F., Shuai, W., Liu, R., and You, F. (2008, January 16\u201318). Comparison of drive patterns for single current source EIT in computational phantom. Proceedings of the 2nd International Conference on Bioinformatics and Biomedical Engineering, 2008, (ICBBE 2008), Shanghai, China.","DOI":"10.1109\/ICBBE.2008.704"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1016\/j.compstruct.2015.07.082","article-title":"Spatial damage detection in electrically anisotropic fiber-reinforced composites using carbon nanotube networks","volume":"141","author":"Gallo","year":"2016","journal-title":"Compos. Struct."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"238","DOI":"10.1109\/TBME.2004.840506","article-title":"On optimal current patterns for electrical impedance tomography","volume":"52","author":"Demidenko","year":"2005","journal-title":"IEEE Trans. Biomed. Eng."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1201","DOI":"10.1088\/0266-5611\/23\/3\/021","article-title":"Optimal current patterns in dynamical electrical impedance tomography imaging","volume":"23","author":"Kaipio","year":"2007","journal-title":"Inverse Probl."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"276","DOI":"10.1016\/j.conengprac.2016.03.003","article-title":"Influence of current injection pattern and electric potential measurement strategies in electrical impedance tomography","volume":"58","author":"Silva","year":"2017","journal-title":"Control Eng. Pract."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Russo, S., Carbonaro, N., Tognetti, A., and Nefti-Meziani, S. (2017). A Quantitative Evaluation of Drive Patterns in Electrical Impedance Tomography. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Proceedings of the 6th EAI International Conference on Wireless Mobile Communication and Healthcare, Milan, Italy, 14\u201316 November 2016, Springer International Publishing.","DOI":"10.1007\/978-3-319-58877-3_43"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"1871","DOI":"10.1088\/0957-0233\/13\/12\/310","article-title":"A Matlab toolkit for three-dimensional electrical impedance tomography: A contribution to the Electrical Impedance and Diffuse Optical Reconstruction Software project","volume":"13","author":"Polydorides","year":"2002","journal-title":"Meas. Sci. Technol."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1309","DOI":"10.1109\/TMAG.2003.810390","article-title":"Jacobian calculation for electrical impedance tomography based on the reciprocity principle","volume":"39","author":"Brandstatter","year":"2003","journal-title":"IEEE Trans. Magn."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1088\/0967-3334\/25\/1\/021","article-title":"EIT reconstruction algorithms: Pitfalls, challenges and recent developments","volume":"25","author":"Lionheart","year":"2004","journal-title":"Physiol. Meas."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Alirezaei, H., Nagakubo, A., and Kuniyoshi, Y. (December, January 29). A highly stretchable tactile distribution sensor for smooth surfaced humanoids. Proceedings of the 7th IEEE-RAS International Conference on Humanoid Robots, 2007, Pittsburgh, PA, USA.","DOI":"10.1109\/ICHR.2007.4813864"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"300","DOI":"10.1109\/JSEN.2004.842445","article-title":"A 1000-measurement frames\/second ERT data capture system with real-time visualization","volume":"5","author":"Wilkinson","year":"2005","journal-title":"IEEE Sens. J."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"S25","DOI":"10.1088\/0967-3334\/27\/5\/S03","article-title":"Uses and abuses of EIDORS: An extensible software base for EIT","volume":"27","author":"Adler","year":"2006","journal-title":"Physiol. Meas."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"851","DOI":"10.1088\/0967-3334\/32\/7\/S09","article-title":"Evaluation of EIT system performance","volume":"32","author":"Yasin","year":"2011","journal-title":"Physiol. Meas."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"2257","DOI":"10.1109\/TBME.2010.2052618","article-title":"A resistive mesh phantom for assessing the performance of EIT systems","volume":"57","author":"Gagnon","year":"2010","journal-title":"IEEE Trans. Biomed. Eng."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"663","DOI":"10.1016\/j.measurement.2012.01.002","article-title":"Studying the resistivity imaging of chicken tissue phantoms with different current patterns in Electrical Impedance Tomography (EIT)","volume":"45","author":"Bera","year":"2012","journal-title":"Measurement"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"91","DOI":"10.1109\/TMI.1986.4307752","article-title":"Distinguishability of conductivities by electric current computed tomography","volume":"5","author":"Isaacson","year":"1986","journal-title":"IEEE Trans. Med. Imaging"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"38","DOI":"10.1109\/TBME.1971.4502787","article-title":"An application of electrocardiographic lead theory to impedance plethysmography","volume":"BME-18","author":"Geselowitz","year":"1971","journal-title":"IEEE Trans. Biomed. Eng."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"91","DOI":"10.1088\/0143-0815\/8\/4A\/012","article-title":"The Sheffield data collection system","volume":"8","author":"Brown","year":"1987","journal-title":"Clin. Phys. Physiol. Meas."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"66","DOI":"10.1002\/ima.1850020203","article-title":"NOSER: An algorithm for solving the inverse conductivity problem","volume":"2","author":"Cheney","year":"1990","journal-title":"Int. J. Imaging Syst. Technol."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1071","DOI":"10.1088\/0967-3334\/27\/11\/002","article-title":"Pseudo-polar drive patterns for brain electrical impedance tomography","volume":"27","author":"Shi","year":"2006","journal-title":"Physiol. Meas."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"289","DOI":"10.1088\/0967-3334\/18\/4\/003","article-title":"Assessment of errors in static electrical impedance tomography with adjacent and trigonometric current patterns","volume":"18","author":"Kolehmainen","year":"1997","journal-title":"Physiol. Meas."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"129","DOI":"10.1016\/j.sna.2005.10.026","article-title":"Conductive knitted fabric as large-strain gauge under high temperature","volume":"126","author":"Zhang","year":"2006","journal-title":"Sens. Actuators A Phys."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"935","DOI":"10.1177\/0040517509349789","article-title":"A resistive network model for conductive knitting stitches","volume":"80","author":"Li","year":"2010","journal-title":"Text. Res. J."},{"key":"ref_36","doi-asserted-by":"crossref","unstructured":"Naushad, A., Rashid, A., and Mazhar, S. (2014, January 8\u20139). Analysing the performance of EIT images using the point spread function. Proceedings of the 2014 International Conference on Emerging Technologies (ICET), Islamabad, Pakistan.","DOI":"10.1109\/ICET.2014.7021013"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/17\/9\/1999\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T18:43:48Z","timestamp":1760208228000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/17\/9\/1999"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,8,31]]},"references-count":36,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2017,9]]}},"alternative-id":["s17091999"],"URL":"https:\/\/doi.org\/10.3390\/s17091999","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,8,31]]}}}