Effect of implant variables on temperatures achieved during ferromagnetic hyperthermia
Effects of ferromagnetic implant variables on steady-state temperature were studied in both in vitro (phantom) and in vivo (rabbit hind limb musculature) models. Thermoseed implant variables included: (1) the presence and number of thermoseed sleeves; (2) variations in thermoseed alignment within th...
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| Veröffentlicht in: | International journal of hyperthermia 1992, Vol.8 (2), p.241-251 |
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| container_title | International journal of hyperthermia |
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| creator | Tompkins, D. T. Partington, B. P. Steeves, R. A. Bartholow, S. D. Paliwal, B. R. |
| description | Effects of ferromagnetic implant variables on steady-state temperature were studied in both in vitro (phantom) and in vivo (rabbit hind limb musculature) models. Thermoseed implant variables included: (1) the presence and number of thermoseed sleeves; (2) variations in thermoseed alignment within the oscillating electromagnetic field; (3) generator power levels of 300 W, 600 W, and 1200 W; and (4) separation of thermoseed tracks by 0·8 cm versus 1 cm. When the thermoseeds were aligned parallel to the electromagnetic field, temperature distributions in the in vivo model using bare thermoseeds and thermoseeds encased in a single sleeve (0 · 1 mm wall thickness) of polyethylene tubing were statistically higher than in tests performed with thermoseeds encased in a double sleeve (0 · 25 mm over 0 · 1 mm wall thickness) of tubing (p = 0 · 006). Nonetheless, average steady-state temperatures above a therapeutic minimum (≥ 42° C) were achieved at all generator power levels using thermoseeds encased in a double sleeve of tubing and aligned parallel to the electromagnetic field. Gross misalignment of thermoseeds with the electromagnetic field was partly compensated for by utilizing higher generator power levels. Thermoseed tracks separated by 0 · 8 cm and aligned parallel to the electromagnetic field yielded average steady-state temperatures that were 0·4-2·2°C higher than those obtained with a thermoseed track separation of 1 cm. |
| doi_str_mv | 10.3109/02656739209021779 |
| format | Article |
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T. ; Partington, B. P. ; Steeves, R. A. ; Bartholow, S. D. ; Paliwal, B. R.</creator><creatorcontrib>Tompkins, D. T. ; Partington, B. P. ; Steeves, R. A. ; Bartholow, S. D. ; Paliwal, B. R.</creatorcontrib><description>Effects of ferromagnetic implant variables on steady-state temperature were studied in both in vitro (phantom) and in vivo (rabbit hind limb musculature) models. Thermoseed implant variables included: (1) the presence and number of thermoseed sleeves; (2) variations in thermoseed alignment within the oscillating electromagnetic field; (3) generator power levels of 300 W, 600 W, and 1200 W; and (4) separation of thermoseed tracks by 0·8 cm versus 1 cm. When the thermoseeds were aligned parallel to the electromagnetic field, temperature distributions in the in vivo model using bare thermoseeds and thermoseeds encased in a single sleeve (0 · 1 mm wall thickness) of polyethylene tubing were statistically higher than in tests performed with thermoseeds encased in a double sleeve (0 · 25 mm over 0 · 1 mm wall thickness) of tubing (p = 0 · 006). Nonetheless, average steady-state temperatures above a therapeutic minimum (≥ 42° C) were achieved at all generator power levels using thermoseeds encased in a double sleeve of tubing and aligned parallel to the electromagnetic field. Gross misalignment of thermoseeds with the electromagnetic field was partly compensated for by utilizing higher generator power levels. Thermoseed tracks separated by 0 · 8 cm and aligned parallel to the electromagnetic field yielded average steady-state temperatures that were 0·4-2·2°C higher than those obtained with a thermoseed track separation of 1 cm.</description><identifier>ISSN: 0265-6736</identifier><identifier>EISSN: 1464-5157</identifier><identifier>DOI: 10.3109/02656739209021779</identifier><identifier>PMID: 1573313</identifier><identifier>CODEN: IJHYEQ</identifier><language>eng</language><publisher>London: Informa UK Ltd</publisher><subject>Animals ; Biological and medical sciences ; Body Temperature ; Drug Implants ; Electromagnetic Fields ; Evaluation Studies as Topic ; Ferric Compounds - administration & dosage ; ferromagnetic heating ; Hyperthermia, Induced - instrumentation ; Hyperthermia, Induced - methods ; interstitial hyperthermia ; Medical sciences ; Models, Structural ; normal tissue ; Rabbits ; Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects) ; Technology. Biomaterials. Equipments. Material. Instrumentation</subject><ispartof>International journal of hyperthermia, 1992, Vol.8 (2), p.241-251</ispartof><rights>1992 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted 1992</rights><rights>1993 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c496t-96b70d74b3bc0d09225cf795f2624883b220797ce5ef062b6beea92f6043d7013</citedby><cites>FETCH-LOGICAL-c496t-96b70d74b3bc0d09225cf795f2624883b220797ce5ef062b6beea92f6043d7013</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.tandfonline.com/doi/pdf/10.3109/02656739209021779$$EPDF$$P50$$Ginformaworld$$H</linktopdf><linktohtml>$$Uhttps://www.tandfonline.com/doi/full/10.3109/02656739209021779$$EHTML$$P50$$Ginformaworld$$H</linktohtml><link.rule.ids>314,777,781,4010,27904,27905,27906,59626,60415,61200,61381</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4372245$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/1573313$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Tompkins, D. T.</creatorcontrib><creatorcontrib>Partington, B. P.</creatorcontrib><creatorcontrib>Steeves, R. A.</creatorcontrib><creatorcontrib>Bartholow, S. D.</creatorcontrib><creatorcontrib>Paliwal, B. R.</creatorcontrib><title>Effect of implant variables on temperatures achieved during ferromagnetic hyperthermia</title><title>International journal of hyperthermia</title><addtitle>Int J Hyperthermia</addtitle><description>Effects of ferromagnetic implant variables on steady-state temperature were studied in both in vitro (phantom) and in vivo (rabbit hind limb musculature) models. Thermoseed implant variables included: (1) the presence and number of thermoseed sleeves; (2) variations in thermoseed alignment within the oscillating electromagnetic field; (3) generator power levels of 300 W, 600 W, and 1200 W; and (4) separation of thermoseed tracks by 0·8 cm versus 1 cm. When the thermoseeds were aligned parallel to the electromagnetic field, temperature distributions in the in vivo model using bare thermoseeds and thermoseeds encased in a single sleeve (0 · 1 mm wall thickness) of polyethylene tubing were statistically higher than in tests performed with thermoseeds encased in a double sleeve (0 · 25 mm over 0 · 1 mm wall thickness) of tubing (p = 0 · 006). Nonetheless, average steady-state temperatures above a therapeutic minimum (≥ 42° C) were achieved at all generator power levels using thermoseeds encased in a double sleeve of tubing and aligned parallel to the electromagnetic field. Gross misalignment of thermoseeds with the electromagnetic field was partly compensated for by utilizing higher generator power levels. Thermoseed tracks separated by 0 · 8 cm and aligned parallel to the electromagnetic field yielded average steady-state temperatures that were 0·4-2·2°C higher than those obtained with a thermoseed track separation of 1 cm.</description><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Body Temperature</subject><subject>Drug Implants</subject><subject>Electromagnetic Fields</subject><subject>Evaluation Studies as Topic</subject><subject>Ferric Compounds - administration & dosage</subject><subject>ferromagnetic heating</subject><subject>Hyperthermia, Induced - instrumentation</subject><subject>Hyperthermia, Induced - methods</subject><subject>interstitial hyperthermia</subject><subject>Medical sciences</subject><subject>Models, Structural</subject><subject>normal tissue</subject><subject>Rabbits</subject><subject>Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)</subject><subject>Technology. Biomaterials. Equipments. Material. Instrumentation</subject><issn>0265-6736</issn><issn>1464-5157</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kE9r3DAQxUVpSLdpP0APBR9Kbk70z9KK5FJC2gYCubS9GlkexQq2tRnJKfvto7DblhDIaRje7w3zHiGfGD0RjJpTylWjtDCcGsqZ1uYNWTGpZN2wRr8lqye9LoB6R96ndEcplQ3Xh-SwyEIwsSK_L70Hl6voqzBtRjvn6sFisN0IqYpzlWHaANq8YNmtGwI8QF_1C4b5tvKAGCd7O0MOrhq2hcwD4BTsB3Lg7Zjg434ekV_fLn9e_Kivb75fXXy9rp00KtdGdZr2Wnaic7SnhvPGeW0azxWX67XoOKfaaAcNeKp4pzoAa7hXVIpeUyaOyPHu7gbj_QIpt1NIDsYSBOKSWs0No2suC8h2oMOYEoJvNxgmi9uW0fapy_ZFl8XzeX986Sbo_zt25RX9y163ydnRo51dSP8wKTTnsinY-Q4Ls4842T8Rx77NdjtG_OsRr31x9sw-gB3z4CxCexcXnEu9r2R4BAdXoV0</recordid><startdate>1992</startdate><enddate>1992</enddate><creator>Tompkins, D. T.</creator><creator>Partington, B. P.</creator><creator>Steeves, R. A.</creator><creator>Bartholow, S. D.</creator><creator>Paliwal, B. R.</creator><general>Informa UK Ltd</general><general>Taylor & Francis</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>1992</creationdate><title>Effect of implant variables on temperatures achieved during ferromagnetic hyperthermia</title><author>Tompkins, D. T. ; Partington, B. P. ; Steeves, R. A. ; Bartholow, S. D. ; Paliwal, B. R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c496t-96b70d74b3bc0d09225cf795f2624883b220797ce5ef062b6beea92f6043d7013</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>Body Temperature</topic><topic>Drug Implants</topic><topic>Electromagnetic Fields</topic><topic>Evaluation Studies as Topic</topic><topic>Ferric Compounds - administration & dosage</topic><topic>ferromagnetic heating</topic><topic>Hyperthermia, Induced - instrumentation</topic><topic>Hyperthermia, Induced - methods</topic><topic>interstitial hyperthermia</topic><topic>Medical sciences</topic><topic>Models, Structural</topic><topic>normal tissue</topic><topic>Rabbits</topic><topic>Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)</topic><topic>Technology. Biomaterials. Equipments. Material. Instrumentation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tompkins, D. T.</creatorcontrib><creatorcontrib>Partington, B. P.</creatorcontrib><creatorcontrib>Steeves, R. A.</creatorcontrib><creatorcontrib>Bartholow, S. D.</creatorcontrib><creatorcontrib>Paliwal, B. R.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>International journal of hyperthermia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tompkins, D. T.</au><au>Partington, B. P.</au><au>Steeves, R. A.</au><au>Bartholow, S. D.</au><au>Paliwal, B. R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of implant variables on temperatures achieved during ferromagnetic hyperthermia</atitle><jtitle>International journal of hyperthermia</jtitle><addtitle>Int J Hyperthermia</addtitle><date>1992</date><risdate>1992</risdate><volume>8</volume><issue>2</issue><spage>241</spage><epage>251</epage><pages>241-251</pages><issn>0265-6736</issn><eissn>1464-5157</eissn><coden>IJHYEQ</coden><abstract>Effects of ferromagnetic implant variables on steady-state temperature were studied in both in vitro (phantom) and in vivo (rabbit hind limb musculature) models. Thermoseed implant variables included: (1) the presence and number of thermoseed sleeves; (2) variations in thermoseed alignment within the oscillating electromagnetic field; (3) generator power levels of 300 W, 600 W, and 1200 W; and (4) separation of thermoseed tracks by 0·8 cm versus 1 cm. When the thermoseeds were aligned parallel to the electromagnetic field, temperature distributions in the in vivo model using bare thermoseeds and thermoseeds encased in a single sleeve (0 · 1 mm wall thickness) of polyethylene tubing were statistically higher than in tests performed with thermoseeds encased in a double sleeve (0 · 25 mm over 0 · 1 mm wall thickness) of tubing (p = 0 · 006). Nonetheless, average steady-state temperatures above a therapeutic minimum (≥ 42° C) were achieved at all generator power levels using thermoseeds encased in a double sleeve of tubing and aligned parallel to the electromagnetic field. Gross misalignment of thermoseeds with the electromagnetic field was partly compensated for by utilizing higher generator power levels. Thermoseed tracks separated by 0 · 8 cm and aligned parallel to the electromagnetic field yielded average steady-state temperatures that were 0·4-2·2°C higher than those obtained with a thermoseed track separation of 1 cm.</abstract><cop>London</cop><pub>Informa UK Ltd</pub><pmid>1573313</pmid><doi>10.3109/02656739209021779</doi><tpages>11</tpages></addata></record> |
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| subjects | Animals Biological and medical sciences Body Temperature Drug Implants Electromagnetic Fields Evaluation Studies as Topic Ferric Compounds - administration & dosage ferromagnetic heating Hyperthermia, Induced - instrumentation Hyperthermia, Induced - methods interstitial hyperthermia Medical sciences Models, Structural normal tissue Rabbits Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects) Technology. Biomaterials. Equipments. Material. Instrumentation |
| title | Effect of implant variables on temperatures achieved during ferromagnetic hyperthermia |
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