Technical Innovations and Patient Support in Radiation Oncology最新文献

{"title":"Monte Carlo-calculated perturbation correction factors in clinical proton beams using PHITS","authors":"Hiromu Ooe ,&nbsp;Keisuke Yasui ,&nbsp;Yuya Nagake ,&nbsp;Kaito Iwase ,&nbsp;Yuri Kasugai ,&nbsp;Mai Tsutsumi ,&nbsp;Yuri Fukuta ,&nbsp;Shiyu Hori ,&nbsp;Hidetoshi Shimizu ,&nbsp;Naoki Hayashi","doi":"10.1016/j.tipsro.2025.100325","DOIUrl":"10.1016/j.tipsro.2025.100325","url":null,"abstract":"<div><h3>Background</h3><div>Accurate absolute dosimetry is essential for achieving high-precision proton beam therapy. Consequently, a comprehensive characterization of the ionization chamber’s response properties is necessary.</div></div><div><h3>Purpose</h3><div>This study aimed to evaluate the average <span><math><mrow><msub><mi>f</mi><mi>Q</mi></msub></mrow></math></span> using Monte Carlo (MC) code PHITS to assess uncertainties among different MC simulation tools. Additionally, <span><math><mrow><msub><mi>P</mi><mi>Q</mi></msub></mrow></math></span> values for PTW 30013, NACP-02, and PTW 31013 ionization chambers are calculated using PHITS to provide new reference data for <span><math><mrow><msub><mi>P</mi><mi>Q</mi></msub></mrow></math></span>. Furthermore, a new <span><math><mrow><msub><mi>k</mi><mi>Q</mi></msub></mrow></math></span> factor for PTW 31013 chamber is established using MC method, contributing to advancements in proton beam dosimetry protocols.</div></div><div><h3>Methods</h3><div>Monoenergetic proton beams were employed to calculate <span><math><mrow><msub><mi>f</mi><mi>Q</mi></msub></mrow></math></span>, <span><math><mrow><msub><mi>k</mi><mi>Q</mi></msub></mrow></math></span>, and <span><math><mrow><msub><mi>P</mi><mi>Q</mi></msub></mrow></math></span> for Farmer, Semiflex, and plane‐parallel chambers. The absorbed dose deposited within the sensitive volume of each chamber was determined via simulations employing PHITS, thereby providing the basis for the estimation of these factors. Computed <span><math><mrow><msub><mi>f</mi><mi>Q</mi></msub></mrow></math></span> values were compared with previous reports, while <span><math><mrow><msub><mi>k</mi><mi>Q</mi></msub></mrow></math></span> and <span><math><mrow><msub><mi>P</mi><mi>Q</mi></msub></mrow></math></span> were benchmarked against literature and Technical Reports Series No. 398 (TRS-398) Rev.1 guideline.</div></div><div><h3>Results</h3><div>Incorporating PHITS‐derived <span><math><mrow><msub><mi>f</mi><mi>Q</mi></msub></mrow></math></span> values reduced the uncertainty of <span><math><mrow><msubsup><mover><mrow><mi>f</mi></mrow><mrow><mo>¯</mo></mrow></mover><mrow><mi>Q</mi></mrow><mrow><mi>P</mi><mi>H</mi><mi>I</mi><mi>T</mi><mi>S</mi></mrow></msubsup></mrow></math></span> compared to previous findings. The <span><math><mrow><msub><mi>k</mi><mi>Q</mi></msub></mrow></math></span> factor for PTW 31013 followed trends observed in cylindrical chambers with varying sensitive volumes; notably, this study represents the first MC estimation of <span><math><mrow><msub><mi>k</mi><mi>Q</mi></msub></mrow></math></span> for this chamber. <span><math><mrow><msub><mi>P</mi><mi>Q</mi></msub></mrow></math></span> values for values deviated by up to 1.7% from unity.</div></div><div><h3>Conclusion</h3><div>The data generated in this study provide important insights for refining proton beam dosimetry, contributing to the improvement of treatment precision.</div></div>","PeriodicalId":36328,"journal":{"name":"Technical Innovations and Patient Support in Radiation Oncology","volume":"35 ","pages":"Article 100325"},"PeriodicalIF":2.8,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721511","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":"New workflow and motion analysis for gastric mucosa-associated lymphoid tissue lymphoma on a 1.5-T MR-Linac","authors":"Masato Tsuneda ,&nbsp;Kota Abe ,&nbsp;Yukinao Abe ,&nbsp;Yohei Ikeda ,&nbsp;Asuka Kodate ,&nbsp;Aki Kanazawa ,&nbsp;Makoto Saito ,&nbsp;Rintaro Harada ,&nbsp;Miho Watanabe ,&nbsp;Takashi Uno","doi":"10.1016/j.tipsro.2025.100323","DOIUrl":"10.1016/j.tipsro.2025.100323","url":null,"abstract":"<div><div>We developed and evaluated a multiplane cine magnetic resonance imaging (MRI) workflow for magnetic resonance (MR)-guided online adaptive radiation therapy (MRgOART) for gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Two patients underwent MRgOART using this workflow, which enabled real-time assessments of stomach motion and ensured accurate target coverage within a planning target volume. Our workflow allowed visualization of the stomach with complex intrafractional motion caused by respiration and peristalsis. The total treatment time was clinically acceptable. All fractions satisfied our dose constraints. Our workflow supports precise MRgOART delivery for targets with variable shapes and motion, such as gastric MALT lymphoma.</div></div>","PeriodicalId":36328,"journal":{"name":"Technical Innovations and Patient Support in Radiation Oncology","volume":"35 ","pages":"Article 100323"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714541","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":"Patient experience of head and neck treatment on a 1.5 T MR-Linac: is the ATS-lite adaptive solution tolerable?","authors":"Helen Barnes ,&nbsp;Sophie Alexander ,&nbsp;Shreerang Bhide ,&nbsp;Alex Dunlop ,&nbsp;Amit Gupta ,&nbsp;Kevin Harrington ,&nbsp;Trina Herbert ,&nbsp;Kee Howe Wong ,&nbsp;Helen McNair","doi":"10.1016/j.tipsro.2025.100324","DOIUrl":"10.1016/j.tipsro.2025.100324","url":null,"abstract":"<div><h3>Introduction</h3><div>Head and neck cancer (HNC) treatment on the Unity MR-Linac (MRL) (Elekta AB, Stockholm, Sweden) has been developed using the novel adapt-to-shape Lite (ATS-lite) method to create clinically acceptable adaptive treatments clinician-free. Here we investigate patient experience and acceptability of this technique.</div></div><div><h3>Methods</h3><div>Ten HNC patients treated to 65 Gy in 30 fractions with MRI-guided adaptive radiotherapy (MRIgART) within the PERMIT trial (NCT03727698), were included. Data collected comprised patient demographics, treatment time, and patient experience, using an established MRL questionnaire.</div><div>Back-up plans were created for use on the conventional linac with CT guidance, to prevent missed fractions. The frequency of use was collected and categorised to reflect the cause.</div></div><div><h3>Results</h3><div>The median total treatment time for ATS-lite method was 39 min. The percentage of treatments under 60 mins was 98.8 %.</div><div>Questionnaire response rate was 85% and individual question response rate was 99%. Ninety-six percent of responses scored 2 or 3 on the Likert scale, a positive answer. The lowest scoring question was “I forced myself to manage the situation,” with a mean (SD) of 2.4 (0.9).</div><div>The MRL delivered 84.7 % of treatments. The back-up plan was used for 46 fractions, 7 attributed to patient tolerance (n = 2 patients).</div></div><div><h3>Conclusion</h3><div>Average treatment times for the ATS-lite HNC MRIgART are acceptable and faster than reported ATP treatment times. Patient-reported experience was extremely positive. Use of back-up plans attributable to lack of patient tolerance was low. This technique can used with the confidence that patient experience is not negatively impacted.</div></div>","PeriodicalId":36328,"journal":{"name":"Technical Innovations and Patient Support in Radiation Oncology","volume":"35 ","pages":"Article 100324"},"PeriodicalIF":0.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704012","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":"Towards proton therapy guidelines for radiation therapists and dosimetrists: A scoping review","authors":"E. van Weerd ,&nbsp;J.J. Jacobs ,&nbsp;A.M. Moerman ,&nbsp;C. Xavier ,&nbsp;I.T. Kuijper ,&nbsp;N. de Nie ,&nbsp;H. Bijwaard ,&nbsp;M.S. Hoogeman","doi":"10.1016/j.tipsro.2025.100322","DOIUrl":"10.1016/j.tipsro.2025.100322","url":null,"abstract":"<div><div>With the increasing number of proton therapy centers worldwide, particularly in Europe, proton therapy is becoming a more established treatment option. However, education and guidelines, specifically tailored to radiation therapists (RTTs) and dosimetrists, are lacking. Through the “Towards a Sustainable RTT Network” (TaSeRnet) project, efforts are underway to harmonize proton therapy practices among RTTs and dosimetrists across Europe. This scoping review aims to identify and summarize existing guidelines relevant to RTTs and dosimetrists working in proton therapy, providing a necessary first step toward the future development of specific guidelines and education for these professions. Ten articles were identified that include guidelines covering certain aspects of proton therapy workflows in several clinical indications. However, significant gaps remain regarding the specific tasks performed by RTTs and dosimetrists. In particular, no guidelines were found addressing treatment execution, a workflow typically performed by RTTs. Moreover, the limited involvement of RTTs and dosimetrists in the development of existing guidelines may result in the exclusion of essential practical knowledge and expertise. As they play a critical role in the daily delivery of proton therapy, their input is vital to ensure comprehensive and applicable guidelines. In conclusion, this review underscores the need for developing guidelines specifically for RTTs and dosimetrists in collaboration with the broader multidisciplinary team. Developing such guidelines will support the standardization of clinical practice and contribute to improved quality of care.</div></div>","PeriodicalId":36328,"journal":{"name":"Technical Innovations and Patient Support in Radiation Oncology","volume":"35 ","pages":"Article 100322"},"PeriodicalIF":0.0,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672205","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":"Dosimetric evaluation of cone beam computed tomography-guided online adaptive radiotherapy in gastric mucosa-associated lymphoid tissue lymphoma","authors":"Masanori Takaki ,&nbsp;Taka-aki Hirose ,&nbsp;Tadamasa Yoshitake ,&nbsp;Keiji Matsumoto ,&nbsp;Yuko Shirakawa ,&nbsp;Hiroaki Wakiyama ,&nbsp;Osamu Hisano ,&nbsp;Hikaru Imafuku ,&nbsp;Kousei Ishigami","doi":"10.1016/j.tipsro.2025.100321","DOIUrl":"10.1016/j.tipsro.2025.100321","url":null,"abstract":"<div><h3>Introduction</h3><div>This study evaluated dosimetric values of cone beam computed tomography (CBCT)-guided online adaptive radiotherapy (oART) in patients with gastric mucosa-associated lymphoid tissue (MALT) lymphoma, accounting for interfractional and intrafractional motion.</div></div><div><h3>Methods</h3><div>Four patients with stage I gastric MALT lymphoma received CBCT-guided oART. For each of the 60 treatment sessions, scheduled (SCH) and adapted (ADP) plans were generated. Dosimetric evaluation focused on clinical target volume (CTV) and organs at risk (OARs). Metrics included CTV D98 % and D95 %, mean dose to the liver and left and right kidneys, maximum dose to the spinal cord, and V5Gy for bilateral kidneys. Adaptive planning CBCT-based contours were propagated to synthetic CTs of SCH and ADP plans to assess interfractional motion. Post-treatment CBCT-based contours were propagated to synthetic CTs of the ADP plan to evaluate intrafractional motion.</div></div><div><h3>Results</h3><div>ADP plans significantly improved CTV coverage: mean D98% increased from 94.7 % in the SCH plan to 98.6 %, and D95% from 97.3 % to 99.2 % (p &lt; 0.001). Most OAR doses were reduced in the ADP plans, including bilateral kidney V5Gy (11.3 % vs. 8.3 %, p &lt; 0.001) and spinal cord Dmax (9.8 Gy vs. 7.9 Gy, p &lt; 0.001). Liver Dmean was slightly higher in the ADP plan (11.4 Gy vs. 11.1 Gy, p = 0.002). No significant differences were observed in CTV and OAR dosimetric parameters between adaptive planning and post-treatment CBCTs (e.g., CTV D98%: 98.6 % vs. 98.5 %, p = 0.629).</div></div><div><h3>Conclusion</h3><div>CBCT-guided oART improved target coverage and maintained post-treatment dosimetric stability in gastric MALT lymphoma, supporting clinical feasibility.</div></div>","PeriodicalId":36328,"journal":{"name":"Technical Innovations and Patient Support in Radiation Oncology","volume":"35 ","pages":"Article 100321"},"PeriodicalIF":0.0,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489803","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":"Validation of a weekly imaging protocol for tangential whole breast radiation therapy with a tattoo-less surface-guided setup","authors":"Sumie Namba ,&nbsp;Jared Steel ,&nbsp;Matthew Hoffmann ,&nbsp;Hannah Thompson ,&nbsp;Abbey Baylis ,&nbsp;Carmen Hansen ,&nbsp;Thomas Shakespeare","doi":"10.1016/j.tipsro.2025.100318","DOIUrl":"10.1016/j.tipsro.2025.100318","url":null,"abstract":"<div><div>This study explored whether tattoo-less surface guided setups with a first 4 fractions then weekly imaging schedule (F1-4&amp;W) is a suitable alternative to tattoo alignment setups for adjuvant whole breast radiotherapy (WBRT) patients.</div><div>The daily CBCT images (n = 450) of 30 patients treated using tattoo-less surface-guided radiation therapy (SGRT) were retrospectively re-matched to a WBRT protocol. The accuracy of the re-match was assessed, and a F1-4&amp;W imaging schedule applied to investigate the percentage of fractions that would have been treated to a 0.5 cm tolerance. The results were compared with the setup accuracy of 100 consecutive patients treated with WBRT using the existing practice of tattoo-based alignment.</div><div>95.8 % of the tattoo-less SGRT setup fractions were assessed to be treated within tolerance, with a maximum discrepancy from isocentre of 0.7 cm for a non-imaged fraction. When comparing imaged fractions, 98 % of these patients positioned within 0.5 cm of isocentre, while the tattoo-alignment method achieved this only 80 % of the time. The overall imaging frequency rates per patient were 51 % and 53 % for study (SGRT/CBCT) and control groups (EPI/tattoos) respectively.</div><div>We conclude that tattoo-less SGRT provides a consistently accurate method to setup supine tangential WBRT patients with a benefit to patient experience. Furthermore, a F1-4&amp;W imaging schedule is sufficient to ensure patients are treated within tolerance, while maintaining appropriate indication for when increased imaging frequency is necessary.</div></div>","PeriodicalId":36328,"journal":{"name":"Technical Innovations and Patient Support in Radiation Oncology","volume":"35 ","pages":"Article 100318"},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297633","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":"Bridging the proton gap: A proton therapy consultation service for Canadian radiation oncologists","authors":"Inhwa Kim ,&nbsp;Amy Parent ,&nbsp;Michael Holwell ,&nbsp;Tim Craig ,&nbsp;Patricia Lindsay ,&nbsp;Hillary Le ,&nbsp;Yat Tsang ,&nbsp;Perry B. Johnson ,&nbsp;Danny J. Indelicato ,&nbsp;Fei-Fei Liu ,&nbsp;Derek S. Tsang","doi":"10.1016/j.tipsro.2025.100320","DOIUrl":"10.1016/j.tipsro.2025.100320","url":null,"abstract":"<div><h3>Purpose</h3><div>Canada is the only G7 country without a clinical proton beam therapy (PBT) facility. Patients can access publicly funded PBT through provincial out-of-country approval programs. We created a consultation service to inform health care providers regarding the potential dosimetric benefits of PBT.</div></div><div><h3>Materials and Methods</h3><div>We retrospectively reviewed patients referred to our proton consultation service from June 2020 to December 2024. Pencil beam scanning proton plans were generated in the RayStation treatment planning system. Key dosimetric parameters were evaluated using Wilcoxon matched-pairs signed rank test.</div></div><div><h3>Results</h3><div>A total of 55 patients were referred to our service, and 49 had evaluable plans. Patients were referred from 6 provinces and 11 institutions across Canada. The median age at referral was 36 (range, 3–74 years), and 29 % of patients were pediatric. The most common reasons for referral were young age (33 %) and proximity of tumour to OARs (37 %). Target coverage was similar in both photon and proton plans. Cranial (n = 19) and thoracic (n = 7) plans showed a statistically significant reduction in mean brain dose (p &lt; 0.001), mean brain dose minus PTV (p &lt; 0.001), brain D50% (p &lt; 0.001), mean lung dose (p = 0.02), lung V50% (p = 0.02), and lung D50% (p = 0.02) with proton therapy. Sixteen patients were approved by their provincial Ministry of Health for PBT in the United States.</div></div><div><h3>Conclusion</h3><div>Our proton consultation program provides an important service by identifying patients where PBT offers a dosimetric advantage over photon therapy. Following this personalized, data-informed approach, nearly a third of referred patients were approved to go to the US for PBT.</div></div>","PeriodicalId":36328,"journal":{"name":"Technical Innovations and Patient Support in Radiation Oncology","volume":"35 ","pages":"Article 100320"},"PeriodicalIF":0.0,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279996","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":"Timely integration of palliative care into oncology care for patients with bone metastases at the radiotherapy department: A pilot study on acceptability and feasibility","authors":"Anouk van Oss ,&nbsp;Arianne Stoppelenburg ,&nbsp;Ellen de Nijs ,&nbsp;Rebecca van Jaarsveld ,&nbsp;Carly S. Heipon ,&nbsp;Natasja J.H. Raijmakers ,&nbsp;Yvette M. van der Linden","doi":"10.1016/j.tipsro.2025.100317","DOIUrl":"10.1016/j.tipsro.2025.100317","url":null,"abstract":"<div><h3>Background and aim</h3><div>Patients with bone metastases may have needs that extend beyond the management of pain by radiotherapy. Concurrent palliative care leads to improved quality of life, but is often introduced late. In this pilot study, we assessed the acceptability and feasibility of an introdu0000ctory conversation with a palliative care consultant at referral for palliative radiotherapy.</div></div><div><h3>Material and methods</h3><div>Patients with bone metastases and their family caregivers were scheduled for an introductory conversation with a consultant from the hospital palliative care team. During this meeting, the potential benefits of integrating palliative care into their current or future care was discussed. Using statements on a 5-point Likert scale, patients and family caregivers independently evaluated the acceptability of the conversation, and consultants evaluated the feasibility.</div></div><div><h3>Results</h3><div>Between December 2022 and March 2024, 48 patients were included in the study. Median age was 73 years, 63 % were male. Most patients (89 %) and family caregivers (96 %) appreciated the introductory conversation, were unaware of the existence of a palliative care team (60 %, 67 %, respectively), and would contact the team when having questions or concerns (77 %, 82 %). Some found the conversation confronting (17 %, 11 %), or felt it was too early in the illness trajectory (31 %, 26 %). Follow-up consultations were scheduled for 8 patients (17 %). Consultants were able to conduct the conversation as instructed (91 %), though 15 % indicated insufficient time for preparation.</div></div><div><h3>Conclusion</h3><div>Introductory conversations about palliative care at referral for palliative radiotherapy appear both acceptable and feasible, and may enhance timely integration of palliative care into oncology care for patients with bone metastases.</div></div>","PeriodicalId":36328,"journal":{"name":"Technical Innovations and Patient Support in Radiation Oncology","volume":"35 ","pages":"Article 100317"},"PeriodicalIF":0.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313087","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 impact of digital tools and the expected digital transformation in radiotherapy on Dutch radiation therapists (RTTs)","authors":"Thijs Ackermans ,&nbsp;Paul Cremers ,&nbsp;Janne Dingemans ,&nbsp;Carol Ou ,&nbsp;Marcel Verheij ,&nbsp;Maria Jacobs","doi":"10.1016/j.tipsro.2025.100319","DOIUrl":"10.1016/j.tipsro.2025.100319","url":null,"abstract":"<div><h3>Background and Purpose</h3><div>Technological advancements have the potential to mitigate RTT shortages, burnout levels, and turnover rates. However, it is unclear if RTTs currently experience technostress (stress or anxiety from being overwhelmed by technology) and how extensive digital tool usage impacts key job performance indicators (e.g., job engagement, satisfaction, and turnover intentions). This study investigates the impact of digital tools used and expected digital transformation on RTTs’ technostress and key job performance indicators.</div></div><div><h3>Materials and Methods</h3><div>A survey was distributed to RTTs across all Dutch radiotherapy centers, resulting in 265 respondents. The survey included validated questionnaires on digital tool use, technostress, job autonomy, innovative work behavior and job performance indicators. Relationships were assessed using linear regression models and paired samples T-tests (p &lt; 0.05).</div></div><div><h3>Results</h3><div>The number of digital tools used had no significant effect (p &lt; 0.05) on key job performance indicators and was not related to technostress. Technostress negatively impacted key job performance indicators, but explained less than 7 % of the variance. Other factors, such as job autonomy, had a greater influence. When presented with a description of the future perspective of their job role after the expected digital transformation, RTTs reported small declines in key job performance indicators.</div></div><div><h3>Conclusion</h3><div>Current RTT performance is not affected by the number of digital tools used, as RTTs are used to working with digital tools. RTTs showed no technostress. After the predicted digital transformation RTTs remained satisfied and engaged. Ensuring RTTs feel skilled and empowered with decision-making authority is crucial before introducing new digital tools.</div></div>","PeriodicalId":36328,"journal":{"name":"Technical Innovations and Patient Support in Radiation Oncology","volume":"34 ","pages":"Article 100319"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231054","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":"Evaluation of dose delivery accuracy of the lung with the respiratory technique of the Radixact Synchrony real-time tumor tracking system","authors":"Evren Ozan Göksel","doi":"10.1016/j.tipsro.2025.100316","DOIUrl":"10.1016/j.tipsro.2025.100316","url":null,"abstract":"<div><h3>Purpose</h3><div>This study aims to evaluate the dosimetric accuracy of the Lung with Respiratory (LWR) technique in the Radixact Synchrony real-time tumor tracking system using data from actual patients undergoing lung SBRT.</div></div><div><h3>Material and methods</h3><div>This retrospective study included 20 patients treated with the Synchrony LWR technique for primary lung cancer or lung metastases. Mid-ventilation breath-hold CT and 4DCT images were acquired for treatment planning and tumor motion evaluation. Gamma analysis was performed using the PTW 1500 detector. Three verification plans were generated for each patient: one for gamma analysis without motion (GAWoM), one for point dose measurement with motion (PDWM), and one for gamma analysis with motion (GAWM). Patient specific respiratory motion was simulated using a CIRS motion platform. The relationship between respiratory patterns, treatment plan parameters, and the dose delivery accuracy of the Synchrony system was evaluated using correlation analysis.</div></div><div><h3>Results</h3><div>The PDWM results demonstrated a strong agreement between the planned and measured doses, with a maximum difference of less than 2%. The gamma passing rates of 3D dose measurements for all patients’ Synchrony plans were found to be within the clinically acceptable level. While GAWM results were slightly lower than GAWoM results, correlation analysis revealed a strong positive relationship between the two. A moderate negative correlation was observed between the modulation factor and GAWM, similar to GAWoM. Additionally, a strong negative correlation was observed between beam-on time and both GAWoM and GAWM. Furthermore, no significant correlation was found between GAWM and respiratory pattern-related variables, including superior-inferior and lateral motion amplitude or respiratory rate per minute.</div></div><div><h3>Conclusion</h3><div>The results of the correlation analyses indicate that the dose delivery accuracy of the Synchrony LWR technique is comparable to that of static target irradiation, independent of the patient’s respiratory pattern or the planning parameters used.</div></div>","PeriodicalId":36328,"journal":{"name":"Technical Innovations and Patient Support in Radiation Oncology","volume":"34 ","pages":"Article 100316"},"PeriodicalIF":0.0,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154749","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}