Journal of Medical Imaging and Radiation Sciences最新文献

{"title":"Footsteps in fresh snow: A narrative of radiation therapy, purpose, and living “determified”","authors":"Mikki Campbell","doi":"10.1016/j.jmir.2025.101978","DOIUrl":"10.1016/j.jmir.2025.101978","url":null,"abstract":"","PeriodicalId":46420,"journal":{"name":"Journal of Medical Imaging and Radiation Sciences","volume":"56 5","pages":"Article 101978"},"PeriodicalIF":1.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115947","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":"Audit of the accessibility, state and cost of computed tomography service: A national audit in a middle-income resource setting","authors":"James William Ampofo ,&nbsp;Kafui Kossi Kekessie ,&nbsp;Elisabeth. O Balogun ,&nbsp;Eric. Kwesi Ofori ,&nbsp;Seth Kwadwo Angmorterh ,&nbsp;Gilbert Allorsey ,&nbsp;Sampson Batsa ,&nbsp;David Wilson ,&nbsp;Laud Baba Mensah ,&nbsp;Blandine Rubayiza Niyomubyei ,&nbsp;Maame Fosua Ampofo ,&nbsp;Mawuko Vukey","doi":"10.1016/j.jmir.2025.101981","DOIUrl":"10.1016/j.jmir.2025.101981","url":null,"abstract":"<div><h3>Background</h3><div>Computed Tomography (CT) scanners are described as the workhouse of the radiology department. However, their geographical distribution, operationality, availability of skilled personnel and cost of the service may restrict their service to only a few people in some jurisdictions.</div></div><div><h3>Objective</h3><div>This study audited CT scanners in Ghana to determine their geographical distribution, factors affecting their state and service accessibility to provide data for informed decision-making.</div></div><div><h3>Methods</h3><div>A survey involving 45 CT centres was conducted between May and August 2021 using a 3-part semi-structured questionnaire. Data collected included equipment characteristics, maintenance support and scheme, CT personnel and examinations. Responses were analysed using Microsoft Excel 2019 and SPSS v. 21. Comparative analyses were made using ANOVA. Downtimes (DT) of CT equipment and corresponding revenue loss were computed. Logistic regression analysis was carried out to determine the odds radio of power control devices (PCD), maintenance support and scheme on downtime. At CI 95 % <em>p</em> &lt; 0.05 was considered statistically significant.</div></div><div><h3>Results</h3><div>There was a ratio of 1.55 CT scanners to a million population, with only 3 CT centres not included in the survey. Six out of the 16 administrative regions, with 17 % (5 million) of the population had no CT scanners. 22 % of the scanners were non-functioning at the time of the study. 53 % of the centres used PCD and showed a statistically significant relationship with the work setting. There was a cumulative 4356 days DT as at the year 2020 corresponding to an estimated revenue loss of GHc 11,978,692 (USD 2090281.86).</div></div><div><h3>Conclusion</h3><div>Findings have important policy implications on CT equipment distribution, maintenance and revenue loss due to unplanned downtime. There was low density and disproportionate distribution of the equipment, with more than 1/5 of them non-functioning at the time of the study. The majority of their maintenance was outsourced with 1/3 of the centres employing corrective maintenance policy. While the estimated revenue loss due to unplanned DT was very significant, paradoxically, the service appeared to be unaffordable to many, when the living standards were considered.</div></div><div><h3>Implications for practice</h3><div>The distribution of CT scanners should be improved and the efficiency of maintenance management systems in CT scanners should be ensured.</div></div>","PeriodicalId":46420,"journal":{"name":"Journal of Medical Imaging and Radiation Sciences","volume":"56 5","pages":"Article 101981"},"PeriodicalIF":1.3,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090267","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":"The effect to dose and diagnostic quality of limiting source-to-image distance on anterior-posterior semi-erect adult chest X-rays","authors":"A. Fitzgerald ,&nbsp;P. Lockwood","doi":"10.1016/j.jmir.2025.101986","DOIUrl":"10.1016/j.jmir.2025.101986","url":null,"abstract":"<div><h3>Introduction</h3><div>Mobile chest X-rays (CXR) examinations are requested for clinically unstable inpatients who cannot be transported to the radiology department. These examinations often have limitations, such as reduced source-to-image distance (SID) in anterior-posterior (AP) position due to limited space in ward environments. This study aimed to investigate the effect of entrance skin dose (ESD) and the diagnostic image quality of reduced SID from the standard 180cm to 150cm and 100cm on semi-erect AP CXRs.</div></div><div><h3>Method</h3><div>A human tissue equivalent Alderson Rando phantom was positioned in a hospital bed at an AP semi-erect 45-degree angle. Three exposures were taken for each SID; the dose was recorded with an Ion Chamber attached to the anterior chest wall to record the ESD and the dose area product (DAP). The mean dose from the three SID positions was compared using a t-test. Image quality was assessed using Image Quality Score (IQS) and RadLex criteria for diagnostic quality using Analysis of Variance (ANOVA).</div></div><div><h3>Results</h3><div>A linear response of decreasing the SID resulted in a 40.1 % increase in ESD (53.7 μGy; <em>p</em> = &lt; 0.001) from 180 cm to 150 cm SID and a 121.5 % increase (329.9 μGy; <em>p</em> = &lt; 0.001) from 180 cm to 100 cm SID. There was also a decrease in image quality from 180 cm to 100 cm SID (IQS <em>p</em> = 0.03), with 100 cm scoring poor against lower lung field visual reproduction and limited diagnostic quality on RadLex.</div></div><div><h3>Conclusion</h3><div>The findings demonstrate that in controlled X-ray settings, the ESD is increased when the SID is reduced from 180cm to 150cm SID (40.1 %) and to 100cm SID (121.5 %), which furthermore decreases image quality (<em>p</em> = 0.03) and the diagnostic value of the image. It is recommended that radiographers maintain the standard 180 cm SID during adult inpatient semi-erect AP CXR examinations to maintain as low as reasonably practicable (ALARP) diagnostic X-ray examinations.</div></div>","PeriodicalId":46420,"journal":{"name":"Journal of Medical Imaging and Radiation Sciences","volume":"56 4","pages":"Article 101986"},"PeriodicalIF":1.3,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072649","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 roadmap for expanding access to affordable diagnostic imaging services in West and Central Africa: Lessons from Cameroon","authors":"Sidney Tazeh ,&nbsp;Rickeins Mbakwa ,&nbsp;Joshua Tambe ,&nbsp;Isa Ali ,&nbsp;Jessie Titi ,&nbsp;Marius Betfiang ,&nbsp;Joseph Weygand","doi":"10.1016/j.jmir.2025.101977","DOIUrl":"10.1016/j.jmir.2025.101977","url":null,"abstract":"","PeriodicalId":46420,"journal":{"name":"Journal of Medical Imaging and Radiation Sciences","volume":"56 5","pages":"Article 101977"},"PeriodicalIF":1.3,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072076","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":"Empowering advanced practice radiation therapists through medical directives: A progressive step in radiation therapy in Canada","authors":"Carrie Lavergne ,&nbsp;Natalie Rozanec ,&nbsp;Kelly Linden ,&nbsp;Joanna Javor","doi":"10.1016/j.jmir.2025.101898","DOIUrl":"10.1016/j.jmir.2025.101898","url":null,"abstract":"<div><div>The future of the healthcare workforce continues to face challenges such as physician shortages health human resource constraints, an aging population, and increasing treatment complexities, prompting innovative approaches in fields like radiation oncology. The World Health Organization suggests task shifting, redistributing duties within interdisciplinary teams, as a solution to these issues. One effective method to employ task shifting is through the use of medical directives and delegations, enhancing access to care for patients and easing physician burdens. In radiation oncology, advanced practice radiation therapists (APRTs) with specialized skills are well-positioned to receive delegations, allowing for autonomous management/completion of additional duties which benefit patients, the team, and the healthcare system.</div><div>APRTs need advanced knowledge, skills, and judgment to execute these directives and delegations effectively. They must undergo rigorous training, including needs assessments, stakeholder consultations, and performance readiness evaluations. This paper discusses how APRTs implement medical directives into practice (using the PEPPA (Participatory, Evidence-informed, Patient-centred Process for APN role development, implementation and evaluation) framework). The Canadian Association of Medical Radiation Technologists’ (CAMRT) APRT(T) competency profile outlines the full scope of practice that can be achieved with the use of appropriate delegations, directives comprehensive training programs, and proper documentation/approval processes. Medical directives and delegations improve healthcare efficiency, optimize workflows, and enhance patient care, positioning APRTs to be pivotal in addressing health human resource challenges. Implementation of these practices may promote autonomy and professional growth, ultimately benefiting the healthcare system and improving patient outcomes.</div></div>","PeriodicalId":46420,"journal":{"name":"Journal of Medical Imaging and Radiation Sciences","volume":"56 4","pages":"Article 101898"},"PeriodicalIF":1.3,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072559","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":"The ‘Negotiator’: Assessing artificial intelligence (AI) interview preparation for graduate radiographers","authors":"M. Chau ,&nbsp;E. Arruzza ,&nbsp;C.L. Singh","doi":"10.1016/j.jmir.2025.101982","DOIUrl":"10.1016/j.jmir.2025.101982","url":null,"abstract":"<div><h3>Introduction</h3><div><em>The Negotiator</em> is an AI-powered interview preparation tool utilizing OpenAI's ChatGPT to assist graduate radiographers in preparing for professional job interviews. The study aimed to assess the tool’s relevance, clarity, alignment with competency standards, and overall ability to enhance interview readiness for candidates with distinct educational and professional backgrounds.</div></div><div><h3>Methods</h3><div>Three academic evaluators independently assessed two AI-generated interview scenarios tailored to (1) a Bachelor’s graduate with foundational radiography knowledge and clinical placement experience, and (2) a graduate-entry Master’s student transitioning into radiography from another career. Evaluators rated six criteria—relevance, clarity, alignment with competency standards, practicality, engagement, and overall effectiveness—using a Likert scale. Quantitative analysis included Friedman tests and intraclass correlation coefficients (ICC) to assess inter-rater reliability, while manifest content analysis of qualitative feedback identified strengths and limitations of the tool.</div></div><div><h3>Results</h3><div>The Friedman test revealed no significant differences in ratings for Scenario 1 (p=0.232), but Scenario 2 showed significant differences (p=0.047). ICC analysis indicated low inter-rater reliability across both scenarios (Scenario 1: ICC=0.182, Scenario 2: ICC=0.242). Thematic analysis highlighted the tool’s strengths in providing relevant prompts, structured responses, and interview readiness while identifying limitations in aligning with competency standards and addressing specific clinical scenarios.</div></div><div><h3>Conclusion</h3><div><em>The Negotiator</em> demonstrates potential as a supplementary tool for radiography interview preparation by enhancing clarity and confidence. However, refinements are needed to improve alignment with professional standards and contextual specificity. Future research should explore personalization, broader applications, and its impact on real-world interview outcomes.</div></div>","PeriodicalId":46420,"journal":{"name":"Journal of Medical Imaging and Radiation Sciences","volume":"56 5","pages":"Article 101982"},"PeriodicalIF":1.3,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072668","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":"Global trends in radiography research: A bibliometric study of three key journals","authors":"Siddig Ibrahim Abdelwahab ,&nbsp;Manal Mohamed Elhassan Taha ,&nbsp;Abdullah Farasani ,&nbsp;Saleh M. Abdullah ,&nbsp;Jobran M. Moshi ,&nbsp;Abrar Fahad Alshahrani ,&nbsp;Nizar A. Khamjan ,&nbsp;Zenat A. Khired ,&nbsp;Ahmad Assiri ,&nbsp;Ali Mohammed Alqassmi ,&nbsp;Amal Mayudh Alhusayni ,&nbsp;Ibrahim Abdel Aziz Ibrahim ,&nbsp;Saeed Alshahrani ,&nbsp;Waseem Hassan","doi":"10.1016/j.jmir.2025.101960","DOIUrl":"10.1016/j.jmir.2025.101960","url":null,"abstract":"<div><div>Previous bibliometric studies of radiography journals have been limited in scope, covering selective time periods such as 1997–2011, 2013–2022, or 2004–2011, and analyzing relatively small datasets ranging from 706 to 1,830 articles with a few limitations. The present study examined 3,875 papers published in <em>Radiography, Journal of Medical Imaging and Radiation Sciences</em>, and <em>Journal of Medical Radiation Sciences</em> since their inclusion in the Scopus database.</div><div>Quantitative bibliometric indicators, including publication counts, citation performance, and mean citations per article/year, were computed using the Bibliometrix package in R Studio. Co-authorship and institutional collaboration networks were visualized using VOSviewer. Keyword co-occurrence analysis was also conducted to identify dominant research areas and trace their evolution over time.</div><div>Findings revealed a substantial rise in research output, increasing from 15 publications in 1995 to 456 in 2024. Citation impact peaked in 2017, with a gradual decline in subsequent years. The most prolific authors included Hogg P., Bolderston A., and Reed W., while the University of Salford, University of Toronto, and University of Sydney emerged as the leading institutions across the three journals. The United Kingdom, Canada, and Australia were dominant contributors, with a notable rise in participation from African and Asian countries. Funding was primarily supported by national health agencies, cancer-focused organizations, and academic institutions.</div><div>Keyword analysis revealed nine major thematic clusters, including diagnostic imaging technologies, oncology, clinical practice, education, patient-centered care, and public health. Importantly, eight highly cited papers (≥100 citations) were identified, many of which contributed significantly to the professionalization of radiography, expanded the role of radiographers in diagnostic reporting, and integrated emerging technologies such as AI and digital imaging—marking key milestones in the field’s development.</div><div>In summary, this study presents the large-scale, journal-inclusive bibliometric profile of radiography research. It offers new insights into global contributions, and collaboration patterns, thus serving as a valuable foundation for shaping future research strategies.</div></div>","PeriodicalId":46420,"journal":{"name":"Journal of Medical Imaging and Radiation Sciences","volume":"56 5","pages":"Article 101960"},"PeriodicalIF":1.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935975","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":"Geometric and dosimetric impact of inter-professional contour variability in the upper abdomen for MR-linac","authors":"A. Shessel ,&nbsp;M. Velec ,&nbsp;Z.A. Liu ,&nbsp;A. Moreira ,&nbsp;J. Dang ,&nbsp;A. Hosni ,&nbsp;J. Lukovic ,&nbsp;R.M. Appleyard ,&nbsp;T. Rosewall","doi":"10.1016/j.jmir.2025.101980","DOIUrl":"10.1016/j.jmir.2025.101980","url":null,"abstract":"<div><h3>Background and purpose</h3><div>To quantify the geometric accuracy and dosimetric impact of delineation variability for Radiation Therapists (RTs) compared to Radiation Oncologists (ROs) when contouring the organs at risk (OARs) within the upper abdomen on MR imaging.</div></div><div><h3>Materials and methods</h3><div>Eight RT and five RO volunteers contoured six abdominal OARs on MR images for three primary liver cancer cases. The clinical plan was then recalculated, and the study contours were used to generate dose-volume histograms for the OARs. Dice Similarity Coefficient (DSC), Distance to Agreement (DTA) and doses at threshold OAR volumes were used to quantify differences in RT vs. RO contours.</div></div><div><h3>Results</h3><div>RO STAPLE to RT STAPLE comparisons resulted in DSC ≥0.7 for each patient and each organ. The median DTA surface differences between the RO STAPLE and RT STAPLE were &lt;0.4 cm for all OARs except duodenum and small bowel. The mean dose values for the 8 RT and 5 RO were less than 5 % different in 10/24 OAR volumes. RT contours resulted in mean differences &gt;5 % hotter than RO contours in 7 OAR volumes, and &gt;5 % colder in 7 OAR volumes. Colder OAR volumes were found for duodenum, large and small bowel. Only the stomach 5cc mean dose exceeded the threshold dose constraint for both RO and RT contours. Dose differences between RO STAPLE and individual RT contours were not significantly correlated with either DSC or DSC (<em>ρ</em> &lt; 0.404). There were large inter-patient differences in the dosimetric impact of delineation variability.</div></div><div><h3>Conclusions</h3><div>Inter-observer delineation variability of OAR in the upper abdomen can be large for both ROs and RTs. The dosimetric impact of those volumetric differences is moderated by proximity of the OAR to the target and the orientation of the plan dosimetry.</div></div>","PeriodicalId":46420,"journal":{"name":"Journal of Medical Imaging and Radiation Sciences","volume":"56 5","pages":"Article 101980"},"PeriodicalIF":1.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935976","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":"Which has more influence on dose distribution for whole neck radiation therapy, daily neck volume change, or residual setup errors?","authors":"Yuki Aoyama,&nbsp;Tetsuya Tomida,&nbsp;Shogo Tsunemine,&nbsp;Susumu Nagata","doi":"10.1016/j.jmir.2025.101968","DOIUrl":"10.1016/j.jmir.2025.101968","url":null,"abstract":"<div><h3>Introduction</h3><div>The demand for treatment replanning has been reported in radiation therapy for the head-and-neck region because of changes in the patient’s volume or tumor shape. As the dose calculation for PreciseART^Ⓡ is automatically determined based on megavoltage computed tomography images, monitoring the impacts of daily volume changes on the dose distribution could help performing the treatment replanning with Re-CT images at most optimal time. However, performing treatment replanning at the optimal timing is difficult unless the factors influencing volume changes or setup errors are determined. Therefore, this study aimed to infer the major influencing factors.</div></div><div><h3>Methods</h3><div>Thirty patients who underwent intensity-modulated radiation therapy in the head-and-neck region at Shizuoka Cancer Center were enrolled in this study. The differences in the dose distributions per volume change and setup error were evaluated to obtain correlation coefficients. Volume changes were defined as a change in structure volume for the neck region, and setup errors were defined as uncorrectable differences in the vertebral body positions when images are collated in pitch, yaw (i.e., residual setup error), and at shoulder positions.</div></div><div><h3>Results</h3><div>The highest correlation value coefficient indicates the volume change with −0.71 for D95%_CTV, followed by −0.68 for Dmean_CTV, and −0.63 for Dmean_PTV. The correlation between the radiation dose and setup errors was lower than between volume change and radiation dose.</div></div><div><h3>Conclusion</h3><div>Based on our findings, neck volume change has a greater impact on dose distribution compared to residual setup errors.</div></div>","PeriodicalId":46420,"journal":{"name":"Journal of Medical Imaging and Radiation Sciences","volume":"56 5","pages":"Article 101968"},"PeriodicalIF":1.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935974","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":"Professional growth, partnership, and the power of advocacy","authors":"Maria Dimopoulos ,&nbsp;Samantha Skubish","doi":"10.1016/j.jmir.2025.101976","DOIUrl":"10.1016/j.jmir.2025.101976","url":null,"abstract":"","PeriodicalId":46420,"journal":{"name":"Journal of Medical Imaging and Radiation Sciences","volume":"56 5","pages":"Article 101976"},"PeriodicalIF":1.3,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929257","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}