Implantable cardiac pacemaker failure by cumulative dose effects of flattening filter free beams

Abstract Cumulative dose effects, which are one of the main causes of errors that occur when an implantable cardiac pacemaker (ICP) is irradiated with ionizing radiation, induce permanent failure in ICPs. Although flattening filter free (FFF) beams, which are often used in stereotactic radiotherapy,...

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Veröffentlicht in:Journal of radiation research 2021-07, Vol.62 (4), p.735-739
Hauptverfasser: Nakamura, Kazuhiko, Aoyama, Takahiro, Kaneda, Naoki, Otsuji, Masashi, Minami, Yoshitaka, Sakuragi, Ami, Nakamura, Masaru
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container_end_page 739
container_issue 4
container_start_page 735
container_title Journal of radiation research
container_volume 62
creator Nakamura, Kazuhiko
Aoyama, Takahiro
Kaneda, Naoki
Otsuji, Masashi
Minami, Yoshitaka
Sakuragi, Ami
Nakamura, Masaru
description Abstract Cumulative dose effects, which are one of the main causes of errors that occur when an implantable cardiac pacemaker (ICP) is irradiated with ionizing radiation, induce permanent failure in ICPs. Although flattening filter free (FFF) beams, which are often used in stereotactic radiotherapy, are known to have different characteristics from conventional (with flattening filter [WFF]) beams, the cumulative dose effects on ICPs with FFF beams have been under-investigated. This study investigates ICP failure induced by cumulative dose effects of FFF beams. When the ICP placed in the center of the irradiation field was irradiated with 10 MV-FFF at 24 Gy/min, the cumulative dose at which failure occurred was evaluated on the basis of the failure criteria associated with high cumulative dose as described in the American Association of Physicists in Medicine Task Group 203. The ICP failures such as a mild battery depletion at a cumulative dose of 10 Gy, pacing-output voltage change >25% at a cumulative dose of 122 Gy, and the loss of telemetry capability at cumulative dose 134 Gy were induced by cumulative dose effects. The cumulative doses by which the cumulative dose effects of FFF beams induced ICP failure were not very different from those reported in previous studies with WFF beams. Therefore, radiotherapy with FFF beams (and WFF beams) for patients with ICP requires appropriate management for minimizing the cumulative dose effects.
doi_str_mv 10.1093/jrr/rrab041
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Although flattening filter free (FFF) beams, which are often used in stereotactic radiotherapy, are known to have different characteristics from conventional (with flattening filter [WFF]) beams, the cumulative dose effects on ICPs with FFF beams have been under-investigated. This study investigates ICP failure induced by cumulative dose effects of FFF beams. When the ICP placed in the center of the irradiation field was irradiated with 10 MV-FFF at 24 Gy/min, the cumulative dose at which failure occurred was evaluated on the basis of the failure criteria associated with high cumulative dose as described in the American Association of Physicists in Medicine Task Group 203. The ICP failures such as a mild battery depletion at a cumulative dose of 10 Gy, pacing-output voltage change &gt;25% at a cumulative dose of 122 Gy, and the loss of telemetry capability at cumulative dose 134 Gy were induced by cumulative dose effects. The cumulative doses by which the cumulative dose effects of FFF beams induced ICP failure were not very different from those reported in previous studies with WFF beams. Therefore, radiotherapy with FFF beams (and WFF beams) for patients with ICP requires appropriate management for minimizing the cumulative dose effects.</description><identifier>ISSN: 0449-3060</identifier><identifier>EISSN: 1349-9157</identifier><identifier>DOI: 10.1093/jrr/rrab041</identifier><identifier>PMID: 34036327</identifier><language>eng</language><publisher>England: Oxford University Press</publisher><subject>Analysis ; Batteries ; Dose-Response Relationship, Radiation ; Electric Impedance ; Implants, Artificial ; Medical colleges ; Oncology/Medicine ; Pacemaker, Artificial ; Prostheses and Implants ; Prosthesis ; Radiation ; Radiotherapy</subject><ispartof>Journal of radiation research, 2021-07, Vol.62 (4), p.735-739</ispartof><rights>The Author(s) 2021. Published by Oxford University Press on behalf of The Japanese Radiation Research Society and Japanese Society for Radiation Oncology. 2021</rights><rights>The Author(s) 2021. Published by Oxford University Press on behalf of The Japanese Radiation Research Society and Japanese Society for Radiation Oncology.</rights><rights>COPYRIGHT 2021 Oxford University Press</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c569t-73543e70ea56899dacf6a41cdf348383c00e0e22c10b593b172f3e9d2d4814a83</citedby><cites>FETCH-LOGICAL-c569t-73543e70ea56899dacf6a41cdf348383c00e0e22c10b593b172f3e9d2d4814a83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC8273809/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC8273809/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,725,778,782,862,883,1601,27911,27912,53778,53780</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/34036327$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Nakamura, Kazuhiko</creatorcontrib><creatorcontrib>Aoyama, Takahiro</creatorcontrib><creatorcontrib>Kaneda, Naoki</creatorcontrib><creatorcontrib>Otsuji, Masashi</creatorcontrib><creatorcontrib>Minami, Yoshitaka</creatorcontrib><creatorcontrib>Sakuragi, Ami</creatorcontrib><creatorcontrib>Nakamura, Masaru</creatorcontrib><title>Implantable cardiac pacemaker failure by cumulative dose effects of flattening filter free beams</title><title>Journal of radiation research</title><addtitle>J Radiat Res</addtitle><description>Abstract Cumulative dose effects, which are one of the main causes of errors that occur when an implantable cardiac pacemaker (ICP) is irradiated with ionizing radiation, induce permanent failure in ICPs. Although flattening filter free (FFF) beams, which are often used in stereotactic radiotherapy, are known to have different characteristics from conventional (with flattening filter [WFF]) beams, the cumulative dose effects on ICPs with FFF beams have been under-investigated. This study investigates ICP failure induced by cumulative dose effects of FFF beams. When the ICP placed in the center of the irradiation field was irradiated with 10 MV-FFF at 24 Gy/min, the cumulative dose at which failure occurred was evaluated on the basis of the failure criteria associated with high cumulative dose as described in the American Association of Physicists in Medicine Task Group 203. The ICP failures such as a mild battery depletion at a cumulative dose of 10 Gy, pacing-output voltage change &gt;25% at a cumulative dose of 122 Gy, and the loss of telemetry capability at cumulative dose 134 Gy were induced by cumulative dose effects. The cumulative doses by which the cumulative dose effects of FFF beams induced ICP failure were not very different from those reported in previous studies with WFF beams. 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Although flattening filter free (FFF) beams, which are often used in stereotactic radiotherapy, are known to have different characteristics from conventional (with flattening filter [WFF]) beams, the cumulative dose effects on ICPs with FFF beams have been under-investigated. This study investigates ICP failure induced by cumulative dose effects of FFF beams. When the ICP placed in the center of the irradiation field was irradiated with 10 MV-FFF at 24 Gy/min, the cumulative dose at which failure occurred was evaluated on the basis of the failure criteria associated with high cumulative dose as described in the American Association of Physicists in Medicine Task Group 203. The ICP failures such as a mild battery depletion at a cumulative dose of 10 Gy, pacing-output voltage change &gt;25% at a cumulative dose of 122 Gy, and the loss of telemetry capability at cumulative dose 134 Gy were induced by cumulative dose effects. The cumulative doses by which the cumulative dose effects of FFF beams induced ICP failure were not very different from those reported in previous studies with WFF beams. Therefore, radiotherapy with FFF beams (and WFF beams) for patients with ICP requires appropriate management for minimizing the cumulative dose effects.</abstract><cop>England</cop><pub>Oxford University Press</pub><pmid>34036327</pmid><doi>10.1093/jrr/rrab041</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record>
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subjects Analysis
Batteries
Dose-Response Relationship, Radiation
Electric Impedance
Implants, Artificial
Medical colleges
Oncology/Medicine
Pacemaker, Artificial
Prostheses and Implants
Prosthesis
Radiation
Radiotherapy
title Implantable cardiac pacemaker failure by cumulative dose effects of flattening filter free beams
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