Radiography最新文献

{"title":"Dosimetric evaluation and gradient analysis of various MLC leaf-width effects in external beam radiation therapy: TrueBeam Vs Halcyon","authors":"R. Shende ,&nbsp;S.J. Dhoble ,&nbsp;D. Saroj ,&nbsp;G. Gupta","doi":"10.1016/j.radi.2024.10.007","DOIUrl":"10.1016/j.radi.2024.10.007","url":null,"abstract":"<div><h3>Introduction</h3><div>This study investigates dosimetric influence and gradient-analysis of leaf-width of various Multi-leaf-collimators (MLC) from Truebeam and Halcyon linear accelerators.</div></div><div><h3>Methods</h3><div>The leaf-width effects of Millennium120 and HD120MLC from Truebeam and SX1 and SX2 from Halcyon were studied using virtual phantom in Eclipse16.1.2 TPS. Target structures consist of bore and wave cylinders of equally spaced projected Planning target volume (PTV) of diameters ranging from 1-to-5 cm and 20 cm length. Treatment plans for all PTVs, and four different MLCs configurations from both machines were created utilizing 6MVFFF beam to deliver dose of 50Gy/25# using IMRT and VMAT. Plans were evaluated using plan quality indices including dose conformity, homogeneity, gradient radius, and Monitor-unit (MU). Also, dose gradients were analyzed by estimating distinct integral volume V_D% and paired-t-tests were performed to evaluate statistical differences.</div></div><div><h3>Results</h3><div>All the plan satisfied the minimum criteria of D_95 %≥prescription dose and V_{107 %}≤2cc. Mean conformity and homogeneity indices for SX1MLC(CI = 0.680,HI = 0.022) were found significantly higher and lower than SX2(CI = 0.746,HI = 0.016), Millennium120 (CI = 0.739,HI = 0.012), and HD120MLC(CI = 0.745,HI = 0.017), respectively. However, CI and HI for SX2, Millennium120, and HD120MLC found comparable. Gradient radius enclosing 50 % of isodose observed maximum and minimum for SX1 and HD120MLC, respectively. Plan MUs for Truebeam MLCs were found approximately 25 % higher than Halcyon MLCs. Dose distribution generated using SX2 and Millennium120 found comparable, however p ≤ 0.05 ascertained substantial differences among SX1, Millennium120, and HD120MLC.</div></div><div><h3>Conclusion</h3><div>MLC leaf-width influences intensity-modulation and significantly alters dosimetric outcome depending on the magnitude of the leaf-width. HD120MLC does not show much significant advantages over SX2 and Millennium120 except gradient control.</div></div><div><h3>Implications for practice</h3><div>Halcyon SX1MLC produces least effective plan compared to all other MLC types. However, SX2 and Millennium120 can produce plans of comparable quality except plan MUs difference.</div></div>","PeriodicalId":47416,"journal":{"name":"Radiography","volume":"30 6","pages":"Pages 1646-1654"},"PeriodicalIF":2.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142510302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cardiac SABR: Image matching techniques for accurate treatment delivery","authors":"R. Brooks-Pearson ,&nbsp;K. Pilling ,&nbsp;B. Ormston ,&nbsp;L. MacKenzie ,&nbsp;C. Huntley ,&nbsp;A. Kerr ,&nbsp;R. Crouch ,&nbsp;N. Richmond ,&nbsp;M. van der Putten ,&nbsp;P. Atherton","doi":"10.1016/j.radi.2024.08.007","DOIUrl":"10.1016/j.radi.2024.08.007","url":null,"abstract":"<div><h3>Background</h3><div>Ventricular tachycardia is an irregular heartbeat conventionally treated using invasive cardiac catheter ablation and medication. However, when standard treatments have been exhausted, cardiac SABR provides a final treatment option to this high-mortality condition. Complex diagnostic mapping and planning scans enable multi-disciplinary target delineation for a 25Gy single fraction. However, organs at risk (OAR) near the target make this treatment challenging to plan and deliver. Publications from cardiologists report the efficacy of cardiac SABR, however there is limited data on the treatment delivery and image matching of this complex procedure.</div></div><div><h3>Methods</h3><div>Four specialist therapeutic radiographers experienced in cardiac SABR reviewed 40 CBCTs from 10 patients treated in the UK. Each therapeutic radiographer conducted five image matches: a manual match (manual), an automatic match to the heart structure (auto) and the auto match followed by manual adjustment to the PTV (PTV), all using three degrees of freedom (DoF) only. The auto and PTV matches were also repeated using 6DoF. Inter-observer variability was quantified using 95% limits of agreement from a modified Bland-Altman analysis.</div></div><div><h3>Results</h3><div>The limits of agreement were smallest in the automatic matches suggesting the algorithm is reliable. A manual adjustment from the auto match to the PTV is clinically appropriate to optimise target coverage. The limits of agreement were smaller in the 6DoF PTV match 1.06 mm, 1.24 mm, 1.68 mm than the 3DoF PTV match 1.57 mm, 2.06 mm, 2.11 mm (lateral, vertical, longitudinal).</div></div><div><h3>Conclusion</h3><div>The 6DoF CBCT image match has less variability and therefore suggest using a 6DoF couch for treatment delivery.</div></div><div><h3>Implications for practice</h3><div>Cardiac SABR CBCT image matching at treatment delivery is complex, optimisation of CBCT acquisition parameters and therapeutic radiographer training is essential prior to implementation.</div></div>","PeriodicalId":47416,"journal":{"name":"Radiography","volume":"30 6","pages":"Pages 1677-1686"},"PeriodicalIF":2.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142113409","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}

{"title":"Mapping the migrant diagnostic radiographers in the UK: A national survey","authors":"D. Omiyi ,&nbsp;B. Snaith ,&nbsp;E. Iweka ,&nbsp;E. Wilkinson","doi":"10.1016/j.radi.2024.08.015","DOIUrl":"10.1016/j.radi.2024.08.015","url":null,"abstract":"<div><h3>Introduction</h3><div>The international recruitment of healthcare workers remains a UK strategy to manage workforce gaps and maintain service delivery. Although not a new phenomenon, this has been exacerbated by chronic shortages. There is a need to profile the current international recruits and identify individual motivators to understand the opportunities for future recruitment and retention initiatives.</div></div><div><h3>Method</h3><div>A UK-wide electronic survey was conducted using the Jisc platform. The survey was promoted using social media and researcher networks. Eligibility criteria were diagnostic radiographers, internationally educated, and currently working in the UK.</div></div><div><h3>Results</h3><div>226 responses were received. Most were working in England (90.7%) and 58.0% were under 35 years of age. The majority had migrated having moved to the UK since 2020 (63.7%) and the main drivers were career and/or training opportunities. Initial education was in 30 different countries, the highest number originating from Africa and Asia, with a median of 6 years post-qualification experience (IQR 4–11yrs). Despite experience, most were employed in band 5 (n = 72) or band 6 posts (n = 95). 56% had postgraduate qualifications on entry and a third had undertaken postgraduate study in the UK.</div></div><div><h3>Conclusion</h3><div>Based on the survey responses, the profile of internationally recruited diagnostic radiographers is relatively young but with pre-migration experience originating all over the globe. They are motivated to work in the UK particular for career progression opportunities.</div></div><div><h3>Implications for practice</h3><div>This study provides an insight into the motivations, demographics and employment patterns of internationally recruited radiographers working in the UK.</div></div>","PeriodicalId":47416,"journal":{"name":"Radiography","volume":"30 6","pages":"Pages 1713-1718"},"PeriodicalIF":2.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142146585","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}

{"title":"The accuracy and clinical utility of spectral CT bone density measurement in the lumbar spine of unenhanced images: A narrative review","authors":"J. Hepburn,&nbsp;C. Currie,&nbsp;L.C. Trinder","doi":"10.1016/j.radi.2024.08.009","DOIUrl":"10.1016/j.radi.2024.08.009","url":null,"abstract":"<div><h3>Objectives</h3><div>To review and evaluate available literature on spectral computed tomography (SCT) bone mineral density (BMD) measurement in adult thoracolumbar vertebrae of unenhanced images compared to quantitative computed tomography (QCT), to understand its current clinical utility.</div></div><div><h3>Key findings</h3><div>Keyword searches in four databases identified four cross-sectional studies which acquired an SCT BMD measurement in thoracolumbar vertebrae and compared this respectively to QCT, which were then critically appraised using the AXIS tool for cross-sectional studies. 862 vertebrae were measured between T10-S1 in 368 patients. Three studies demonstrated a statistically significant correlation between SCT and QCT for the measurement of Hydroxyapatite (HAP) and calcium (r = 0.86–0.96). One study demonstrated a diagnostic accuracy of 96% using a receiver operating curve.</div></div><div><h3>Conclusions</h3><div>SCT measurements of HAP and calcium in the lumbar vertebrae are comparable to QCT for patients with no additional pathology present. However, further research is required to evaluate diagnostic accuracy before clinical application.</div></div><div><h3>Implications for practice</h3><div>SCT BMD measurement has the potential to be developed as a screening tool for osteoporosis within the fracture liaison service (FLS). This could aid in the identification of patients with osteoporosis and address the current treatment gap. Nonetheless, many factors must be considered for this application including staff training, radiation protection and patient engagement with the screening programme.</div></div>","PeriodicalId":47416,"journal":{"name":"Radiography","volume":"30 6","pages":"Pages 1687-1694"},"PeriodicalIF":2.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142146586","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}

{"title":"Critical evaluation of the prevalence and severity of erectile dysfunction (ED) amongst people receiving radical external beam radiotherapy (EBRT) for prostate cancer at one UK radiotherapy centre and the examination of current management practice against national guidelines to explore the need for a radiographer-led ED clinic.","authors":"Tara Smith ,&nbsp;Louise Turner ,&nbsp;Alice Jackson ,&nbsp;Zoe Grant ,&nbsp;Tracy Cruttendon","doi":"10.1016/j.radi.2024.09.021","DOIUrl":"10.1016/j.radi.2024.09.021","url":null,"abstract":"","PeriodicalId":47416,"journal":{"name":"Radiography","volume":"30 ","pages":"Pages S10-S11"},"PeriodicalIF":2.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142416133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prelim ii - EFRS Member","authors":"","doi":"10.1016/S1078-8174(24)00288-8","DOIUrl":"10.1016/S1078-8174(24)00288-8","url":null,"abstract":"","PeriodicalId":47416,"journal":{"name":"Radiography","volume":"30 ","pages":"Page ii"},"PeriodicalIF":2.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142417732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Redesigning patient pathways to maximise radiotherapy capacity and efficiency","authors":"Clare Hartill,&nbsp;Sukhraj Hothi","doi":"10.1016/j.radi.2024.09.044","DOIUrl":"10.1016/j.radi.2024.09.044","url":null,"abstract":"","PeriodicalId":47416,"journal":{"name":"Radiography","volume":"30 ","pages":"Page S21"},"PeriodicalIF":2.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142417854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A critical review of microbial influence upon the severity of radiation-induced oral mucositis in head and neck squamous cell carcinoma, and its potential impact on future management.","authors":"Ruth Meddows-Taylor ,&nbsp;Sarah Smith","doi":"10.1016/j.radi.2024.09.006","DOIUrl":"10.1016/j.radi.2024.09.006","url":null,"abstract":"","PeriodicalId":47416,"journal":{"name":"Radiography","volume":"30 ","pages":"Page S2"},"PeriodicalIF":2.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142417735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Localiser radiographs in CT: Current practice, radiation dose, image quality and clinical applications","authors":"Y. Al-Hayek ,&nbsp;B. Ofori-Manteaw ,&nbsp;N. Frame ,&nbsp;K. Spuur ,&nbsp;X. Zheng ,&nbsp;L. Rose ,&nbsp;M. Chau","doi":"10.1016/j.radi.2024.09.059","DOIUrl":"10.1016/j.radi.2024.09.059","url":null,"abstract":"<div><h3>Introduction</h3><div>Survey or localiser radiographs are integral to CT imaging. However, the diverse functions and roles of the localiser radiograph are often obscure to radiographers and radiologists. This scoping review reports the full scope of localiser radiograph use and function in contemporary CT imaging.</div></div><div><h3>Methods</h3><div>A scoping review was performed. A systematic literature search was conducted using four databases: MEDLINE, CINAHL, Emcare and Scopus from January 2013 to December 2023. Data extraction was conducted by two review authors and validated by a third reviewer. Thirty-six studies were included in this review.</div></div><div><h3>Results</h3><div>Three major themes emerged: radiation dose management, image quality considerations and clinical protocol applications. Specifically, the number, order of selection and directions of localiser radiographs significantly impact patient dose and image quality; which are additionally impacted by off-centre patient positioning, which can influence the accuracy of body size estimates and CT numbers. Finally, the optimal selection of localiser radiographs, including exposure parameters (kVp, mAs), can be a part of clinical task-based imaging protocol optimisation.</div></div><div><h3>Conclusions</h3><div>The utilities of localiser radiographs in CT imaging are varied. It is salient that radiographers and radiologists understand their role and the impacts of poor application to ensure that radiation dose is minimised and image quality maximised through correct use. Radiographers and radiologists should also be aware of the impact of poor patient positioning on ACTM function, dose and image quality. Additionally, localiser radiographs should be used for clinical task-based protocol optimisation.</div></div><div><h3>Implications for practice</h3><div>The number, order of selection, direction, patient off-centring, and exposure parameters must be considered when utilising localiser radiographs as they impact dose, image quality, and protocol applications. It is essential for radiographers and radiologists to understand these impacts.</div></div>","PeriodicalId":47416,"journal":{"name":"Radiography","volume":"30 6","pages":"Pages 1546-1555"},"PeriodicalIF":2.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142376170","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}

{"title":"Psychological impact of radiotherapy positioning tattoos on teenage and young adult (TYA) patients.","authors":"Mark Reed,&nbsp;Angela Burns","doi":"10.1016/j.radi.2024.09.040","DOIUrl":"10.1016/j.radi.2024.09.040","url":null,"abstract":"","PeriodicalId":47416,"journal":{"name":"Radiography","volume":"30 ","pages":"Pages S19-S20"},"PeriodicalIF":2.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142417850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}