{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,7]],"date-time":"2025-05-07T10:40:05Z","timestamp":1746614405132,"version":"3.40.5"},"reference-count":62,"publisher":"IOP Publishing","issue":"5","license":[{"start":{"date-parts":[[2025,5,7]],"date-time":"2025-05-07T00:00:00Z","timestamp":1746576000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,5,7]],"date-time":"2025-05-07T00:00:00Z","timestamp":1746576000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"funder":[{"DOI":"10.13039\/100007224","name":"Vietnam National Foundation for Science and Technology Development","doi-asserted-by":"crossref","award":["108.99-2021.44"],"award-info":[{"award-number":["108.99-2021.44"]}],"id":[{"id":"10.13039\/100007224","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["Physiol. Meas."],"published-print":{"date-parts":[[2025,5,30]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>\n                  <jats:italic>Objective.<\/jats:italic> Radiofrequency (RF) catheter ablation is a standard treatment for patients with cardiac arrhythmias, providing an efficient, minimally invasive solution. However, the ablation efficiency remains suboptimal due to numerous contributed factors that are overlooked in the literature and not monitored during the procedure. This paper explores the effect of catheter-to-tissue contact angles on lesion formations and the feasibility of the multichannel bioimpedance method in characterising the angles to inform cardiologists. <jats:italic>Approach.<\/jats:italic> Two silico simulations based on a realistic human model were built to: (1) simulate lesion formations with different catheter-to-tissue angles under varying conditions of powers and convection cooling, and (2) simulate multichannel bioimpedances measured at each catheter\u2019s location and angle. 13 locations were picked in all four chambers with 3 contact conditions (catheter lies along the muscle (0\u00b0 and 180\u00b0), in perpendicular to the muscle (90\u00b0) and in middle angles (45\u00b0 and 135\u00b0)). 64 electrodes divided into 4 bands were placed on the thorax for multichannel bioimpedances (3-terminal) measured between the catheter\u2019s second electrode E2 (<jats:inline-formula>\n                     <jats:tex-math\/>\n                     <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                           <mml:mi>I<\/mml:mi>\n                        <\/mml:mrow>\n                     <\/mml:math>\n                  <\/jats:inline-formula>+, <jats:inline-formula>\n                     <jats:tex-math\/>\n                     <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                           <mml:mi>V<\/mml:mi>\n                        <\/mml:mrow>\n                     <\/mml:math>\n                  <\/jats:inline-formula>+), and each pair of adjacent surface electrodes (<jats:inline-formula>\n                     <jats:tex-math\/>\n                     <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mrow>\n                           <mml:mi>I<\/mml:mi>\n                           <mml:mo>\u2212<\/mml:mo>\n                           <mml:mo>,<\/mml:mo>\n                           <mml:mi>V<\/mml:mi>\n                           <mml:mo>\u2212<\/mml:mo>\n                        <\/mml:mrow>\n                     <\/mml:math>\n                  <\/jats:inline-formula>). ANOVA and Tukey\u2019s Honestly Significant Difference (HSD) tests were used to evaluate the contact angle\u2019s effect on the lesion formations and the bioimpedance\u2019s capability in distinguishing between angles. <jats:italic>Main results.<\/jats:italic> The results showed that 0\u00b0 and 180\u00b0 configurations generated significantly different lesions from other angles. The multichannel bioimpedances could recognise 0\u00b0\/180\u00b0 from other angles and correlated moderately to lesion sizes at low ablation power. <jats:italic>Significance.<\/jats:italic> This paper concludes that catheter-to-tissue angles can influence the lesion outcomes significantly and the multichannel bioimpedance is able to detect the angles that matter.<\/jats:p>","DOI":"10.1088\/1361-6579\/add07f","type":"journal-article","created":{"date-parts":[[2025,4,24]],"date-time":"2025-04-24T22:57:50Z","timestamp":1745535470000},"page":"055001","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Catheter-to-tissue contact angle\u2019s effect on lesion formation and characterisation using multichannel bioimpedance method"],"prefix":"10.1088","volume":"46","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-1526-8380","authenticated-orcid":true,"given":"Anh Huyen","family":"Ngo","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-2681-0868","authenticated-orcid":false,"given":"Minh Thao","family":"Hoang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-2106-7519","authenticated-orcid":true,"given":"Phuong Linh","family":"Nguyen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thu Van","family":"Nguyen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Duc Thuan","family":"Nguyen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9725-233X","authenticated-orcid":true,"given":"Minh Duc","family":"Nguyen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"266","published-online":{"date-parts":[[2025,5,7]]},"reference":[{"key":"pmeaadd07fbib1","doi-asserted-by":"publisher","first-page":"709","DOI":"10.1007\/s40122-020-00201-4","article-title":"The efficacy of radiofrequency ablation for pain management in patients with pre-existing hardware at the site of ablation","volume":"9","author":"Abd-Elsayed","year":"2020","journal-title":"Pain Therapy"},{"key":"pmeaadd07fbib2","doi-asserted-by":"publisher","first-page":"1445","DOI":"10.1007\/s10840-024-01782-2","article-title":"Efficacy and safety of high-power short-duration ablation for atrial fibrillation: a systematic review and meta-analysis of randomized controlled trials","volume":"67","author":"Amin","year":"2024","journal-title":"J. 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