Advances in radiotherapy & nuclear medicine最新文献

筛选
英文 中文
Breast cancer radiotherapy and the risk of lung injury: Advances and perspectives. 乳腺癌放疗与肺损伤风险:进展与展望。
Advances in radiotherapy & nuclear medicine Pub Date : 2026-01-21 DOI: 10.36922/arnm025340041
Shubhankar Suman
{"title":"Breast cancer radiotherapy and the risk of lung injury: Advances and perspectives.","authors":"Shubhankar Suman","doi":"10.36922/arnm025340041","DOIUrl":"10.36922/arnm025340041","url":null,"abstract":"<p><p>Breast cancer is the most prevalent malignancy among women worldwide, and radiotherapy (RT) plays a central role in reducing local recurrence and improving survival. Technological advances such as three-dimensional conformal RT (3D-CRT), intensity-modulated RT (IMRT), volumetric-modulated arc therapy (VMAT), and particle therapies have enhanced dose conformity and reduced exposure to surrounding healthy tissues, particularly the lungs. Nevertheless, radiation-induced lung injury (RILI) remains a clinically relevant concern because of the close anatomical relationship between the breast and lung. RILI is a biphasic process, comprising early radiation pneumonitis and late radiation-induced pulmonary fibrosis, with severity influenced by dose distribution and treatment modality. While 3D-CRT carries a moderate risk due to limited beam modulation, IMRT and VMAT improve target coverage but may increase low-dose exposure to larger lung volumes, potentially increasing the risks of subclinical injury and, in the long term, secondary malignancy. Adjunctive lung-sparing strategies, including deep inspiration breath-hold and image-guided techniques, further reduce pulmonary dose. Proton beam therapy, particularly pencil beam scanning, offers additional lung protection through Bragg peak-based dose deposition, minimizing exit dose and irradiation of non-target tissues. Early clinical data suggest a lower incidence of RILI with PBT, although long-term outcomes remain under investigation. Carbon ion RT remains investigational in breast cancer. This review summarizes current evidence on RILI risk across modern RT modalities. A deeper understanding of modality-specific risks is essential for guiding personalized treatment planning and implementing effective lung-sparing strategies.</p>","PeriodicalId":520275,"journal":{"name":"Advances in radiotherapy & nuclear medicine","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12860502/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146109358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Combining PET and Compton imaging with edge-on CZT detectors for enhanced diagnostic capabilities. 将 PET 和康普顿成像与边缘 CZT 探测器相结合,增强诊断能力。
Advances in radiotherapy & nuclear medicine Pub Date : 2024-06-28 Epub Date: 2024-06-14 DOI: 10.36922/arnm.3330
Greyson Shoop, Shiva Abbaszadeh
{"title":"Combining PET and Compton imaging with edge-on CZT detectors for enhanced diagnostic capabilities.","authors":"Greyson Shoop, Shiva Abbaszadeh","doi":"10.36922/arnm.3330","DOIUrl":"10.36922/arnm.3330","url":null,"abstract":"<p><p>The key metrics for positron emission tomography (PET) imaging devices include the capability to capture the maximum available amount of annihilation photon information while generating high-quality images of the radiation distribution. This capability carries clinical implications by reducing scanning time for imaging, thus reducing radiation exposure for patients. However, imaging quality is degraded by positron range effects and the non-collinearity of positron annihilation photons. Utilizing an edge-on configuration of cadmium zinc telluride (CZT) detector crystals offers a potential solution to increase PET sensitivity. The high cross-section of CZT and its capacity to detect both 511 keV annihilation gammas and high-energy prompt gammas, along with multiple photon interaction events, contribute to this increased sensitivity. In this study, we propose a dual-panel edge-on CZT detector system comprised of 4 × 4 × 0.5 cm<sup>3</sup> CZT detectors, with panel dimensions of 20 × 15 cm<sup>2</sup> and a thickness of 4 cm. In this study, we demonstrate the increased sensitivity of our imaging system due to the detection of the Compton kinematics of high-energy gammas originating from prompt-gamma-emitting isotopes. This was achieved using Monte Carlo simulations of a prompt-gamma-emitting isotope,<sup>72</sup>As, with mean positron ranges >3 mm. Our system's dynamic energy range, capable of detecting gammas up to 1.2 MeV, allows it to operate in a dual-mode fashion as both a Compton camera (CC) and standard PET. By presenting reconstructions of <sup>72</sup>As, we highlight the absence of positron range effects in CC reconstructions compared to PET reconstructions. In addition, we evaluate the system's increased sensitivity resulting from its ability to detect high-energy prompt gammas.</p>","PeriodicalId":520275,"journal":{"name":"Advances in radiotherapy & nuclear medicine","volume":"2 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11529829/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142570908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信
小红书