Reversibility of electric-field-induced mechanical changes in soft tissues [Letters]
Recently, ultrasound has been used to study the physiological-level electric-field-induced mechanical changes (EIMC) in general soft biological tissues. Here, we present the experimental results on the dependence of EIMC on the polarity of the applied electric field. We applied an ac voltage source...
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| Veröffentlicht in: | IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2012-03, Vol.59 (3), p.552-556 |
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| container_title | IEEE transactions on ultrasonics, ferroelectrics, and frequency control |
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| creator | Doganay, O. Yuan Xu |
| description | Recently, ultrasound has been used to study the physiological-level electric-field-induced mechanical changes (EIMC) in general soft biological tissues. Here, we present the experimental results on the dependence of EIMC on the polarity of the applied electric field. We applied an ac voltage source to heart tissues and monitored the amplitude changes and time shifting of the ultrasound echoes. The shifting of the echoes was decomposed into a trend component and a fluctuation (feature) component. The changes in amplitude and the fluctuation component of the time shift, but not the trend component of the time shift, can be mostly reversed by reversing the polarity of the applied voltage. The polarity-dependence study reveals two different mechanisms underlying EIMC. |
| doi_str_mv | 10.1109/TUFFC.2012.2227 |
| format | Article |
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Here, we present the experimental results on the dependence of EIMC on the polarity of the applied electric field. We applied an ac voltage source to heart tissues and monitored the amplitude changes and time shifting of the ultrasound echoes. The shifting of the echoes was decomposed into a trend component and a fluctuation (feature) component. The changes in amplitude and the fluctuation component of the time shift, but not the trend component of the time shift, can be mostly reversed by reversing the polarity of the applied voltage. The polarity-dependence study reveals two different mechanisms underlying EIMC.</description><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Biological tissues</subject><subject>Biomechanics. Biorheology</subject><subject>Biomedical monitoring</subject><subject>Biothermics. Biomagnetism. Bioelectricity</subject><subject>Elastic Modulus - physiology</subject><subject>Elastic Modulus - radiation effects</subject><subject>Electric fields</subject><subject>Electromagnetic Fields</subject><subject>Fluctuations</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Heart</subject><subject>Heart - physiology</subject><subject>Heart - radiation effects</subject><subject>In Vitro Techniques</subject><subject>Radiation Dosage</subject><subject>Shear Strength - physiology</subject><subject>Shear Strength - radiation effects</subject><subject>Strain</subject><subject>Stress, Mechanical</subject><subject>Swine</subject><subject>Tissues, organs and organisms biophysics</subject><subject>Transducers</subject><subject>Ultrasonic imaging</subject><subject>Vertebrates: cardiovascular system</subject><subject>Viscosity - radiation effects</subject><issn>0885-3010</issn><issn>1525-8955</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><sourceid>EIF</sourceid><recordid>eNpdkF1rFDEUhoModm177YUgg1C8mm1OPmaSy7J0VVgQyvZKSsgkJ5oyO1OTGaH_vll3rdCrnHCe8_LyEPIe6BKA6svt7Xq9WjIKbMkYa1-RBUgma6WlfE0WVClZcwr0hLzL-Z5SEEKzt-SEMaGg1bAg2xv8gynHLvZxeqzGUGGPbkrR1SFi7-s4-Nmhr3boftkhOttX--En5ioOVR7DVE0x57n8f2xwmkrY3Rl5E2yf8fz4npLb9fV29bXefP_ybXW1qR1v-VRb2epOOEU9aCYp76xzUkgE20gadKe9so56pYXovG7QOR9EgE7I0EomLD8lnw-5D2n8XRpMZhezw763A45zNlozxYHrppCfXpD345yGUs7oRoCkUokCXR4gl8acEwbzkOLOpkcD1Ox1m7-6zV632esuFx-PsXO3Q__M__NbgIsjYHNRF5IdXMz_OdkyKC0L9-HARUR8XjfQCkY5fwKIjpDn</recordid><startdate>20120301</startdate><enddate>20120301</enddate><creator>Doganay, O.</creator><creator>Yuan Xu</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Here, we present the experimental results on the dependence of EIMC on the polarity of the applied electric field. We applied an ac voltage source to heart tissues and monitored the amplitude changes and time shifting of the ultrasound echoes. The shifting of the echoes was decomposed into a trend component and a fluctuation (feature) component. The changes in amplitude and the fluctuation component of the time shift, but not the trend component of the time shift, can be mostly reversed by reversing the polarity of the applied voltage. The polarity-dependence study reveals two different mechanisms underlying EIMC.</abstract><cop>New York, NY</cop><pub>IEEE</pub><pmid>22481791</pmid><doi>10.1109/TUFFC.2012.2227</doi><tpages>5</tpages></addata></record> |
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| ispartof | IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 2012-03, Vol.59 (3), p.552-556 |
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| subjects | Animals Biological and medical sciences Biological tissues Biomechanics. Biorheology Biomedical monitoring Biothermics. Biomagnetism. Bioelectricity Elastic Modulus - physiology Elastic Modulus - radiation effects Electric fields Electromagnetic Fields Fluctuations Fundamental and applied biological sciences. Psychology Heart Heart - physiology Heart - radiation effects In Vitro Techniques Radiation Dosage Shear Strength - physiology Shear Strength - radiation effects Strain Stress, Mechanical Swine Tissues, organs and organisms biophysics Transducers Ultrasonic imaging Vertebrates: cardiovascular system Viscosity - radiation effects |
| title | Reversibility of electric-field-induced mechanical changes in soft tissues [Letters] |
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