Physica Medica-European Journal of Medical Physics最新文献

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Compressed SENSE acceleration factor influence on magnetic resonance image quality in patients with endometrial cancer. 压缩感知加速因子对子宫内膜癌患者磁共振图像质量的影响。
IF 3.3 3区 医学
Physica Medica-European Journal of Medical Physics Pub Date : 2025-01-16 DOI: 10.1016/j.ejmp.2025.104899
Olivera Nikolić, Marijana Basta Nikolić, Miloš Pantelić, Sonja Lukač, Viktor Till, Sanja Stojanović, Una Molnar
{"title":"Compressed SENSE acceleration factor influence on magnetic resonance image quality in patients with endometrial cancer.","authors":"Olivera Nikolić, Marijana Basta Nikolić, Miloš Pantelić, Sonja Lukač, Viktor Till, Sanja Stojanović, Una Molnar","doi":"10.1016/j.ejmp.2025.104899","DOIUrl":"https://doi.org/10.1016/j.ejmp.2025.104899","url":null,"abstract":"<p><strong>Objectives: </strong>To investigate the impact of compressed sensing - sensitivity encoding (CS-SENSE) acceleration factor on the diagnostic performance of magnetic resonance imaging (MRI) within standard female pelvis protocol in patients with endometrial cancer.</p><p><strong>Methods: </strong>T2-weighted turbo spin echo (TSE) sequence from standard female pelvic MRI protocol was chosen due to its long acquisition time and essential role in the evaluation of morphological characteristics of the female pelvic anatomical structures. Fully sampled reference scans and multiple prospectively 2x to 5x under-sampled CS-SENSE scans were acquired. Retrospectively, under-sampled scans were compared to fully sampled scans and visually assessed for image quality and diagnostic quality by two independent radiologists dedicated to urogenital imaging with different experience levels.</p><p><strong>Results: </strong>Images obtained with CS-SENSE accelerated acquisition were of diagnostically acceptable quality at up to 3x acceleration for T2 TSE in both axial and sagittal planes (with an acquisition time reduction of 64 %). Among all evaluated uterine structures, the junctional zone proved to be most sensitive to the influence of the acceleration factor. Statistical analysis showed statistically significant differences between image interpretation qualities between two radiologists of different experience levels (p < 0.05).</p><p><strong>Conclusion: </strong>CS-SENSE accelerated T2 TSE sequence of the female pelvis shows image quality similar to that of conventional acquisitions with reduced acquisition time. CS-SENSE can moderately reduce scan time, providing many benefits without losing the image quality.</p>","PeriodicalId":56092,"journal":{"name":"Physica Medica-European Journal of Medical Physics","volume":"130 ","pages":"104899"},"PeriodicalIF":3.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143016956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Automatic base-dose planning for a robust field junction in total marrow irradiation. 全骨髓照射中一个健壮场结的自动基础剂量规划。
IF 3.3 3区 医学
Physica Medica-European Journal of Medical Physics Pub Date : 2025-01-15 DOI: 10.1016/j.ejmp.2025.104898
Nicola Lambri, Damiano Dei, Ricardo Coimbra Brioso, Leonardo Crespi, Daniele Loiacono, Marta Scorsetti, Pietro Mancosu
{"title":"Automatic base-dose planning for a robust field junction in total marrow irradiation.","authors":"Nicola Lambri, Damiano Dei, Ricardo Coimbra Brioso, Leonardo Crespi, Daniele Loiacono, Marta Scorsetti, Pietro Mancosu","doi":"10.1016/j.ejmp.2025.104898","DOIUrl":"https://doi.org/10.1016/j.ejmp.2025.104898","url":null,"abstract":"<p><strong>Purpose: </strong>Total marrow (lymph-node) irradiation (TMI/TMLI) is a radiotherapy technique irradiating the whole body of a patient. The limited couch travel range in modern linacs (130-150 cm) forces to split the TMI/TMLI delivery into two plans with opposite orientation. A dedicated field junction is necessary to achieve satisfactory target coverage in the overlapping region of the two plans. In a recent study, we implemented an automatic tool (AT) using the Eclipse Scripting API for the creation of a field junction and optimization of TMI/TMLI. In this work, we improved the AT by developing an automatic base-dose planning approach.</p><p><strong>Methods: </strong>Ten patients were selected to compare the manual procedure, original automatic planning approach, and new base-dose approach. Treatment plans were evaluated with the D98%, D<sub>mean</sub>, and D2% for the planning target volume at the junction (PTV_J), while D<sub>mean</sub> and D2% were considered for the PTV without the junction (PTVNoJ) and healthy tissues.</p><p><strong>Results: </strong>Base-dose planning significantly improved the PTV_J coverage compared with the manual approach, with unaltered D<sub>mean</sub>, consistently lower D2% (2.24 Gy vs. 2.30 Gy) and higher D98% (1.98 Gy vs. 1.89 Gy). Moreover, it significantly reduced the hotspots in healthy tissues (2.02 Gy vs. 2.15 Gy). No significant differences for PTVNoJ dose statistics were observed among the procedures, demonstrating that the automatic approaches produced a target coverage similar to the one obtained manually.</p><p><strong>Conclusions: </strong>Base-dose planning improved the field junction optimization of TMI/TMLI. Automatic planning tools can incrementally improve procedures that would be challenging or error-prone to achieve manually.</p>","PeriodicalId":56092,"journal":{"name":"Physica Medica-European Journal of Medical Physics","volume":"130 ","pages":"104898"},"PeriodicalIF":3.3,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143016950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determination of the most appropriate radionuclide for knee radiosynovectomy: Assessment of radiation dose, radiation-induced cancer risk, and post-treatment imaging feasibility. 确定最合适的放射性核素用于膝关节放射滑膜切除术:评估辐射剂量、辐射致癌风险和治疗后影像学可行性。
IF 3.3 3区 医学
Physica Medica-European Journal of Medical Physics Pub Date : 2025-01-13 DOI: 10.1016/j.ejmp.2025.104903
Roghiyeh Bodaghi, Babak Mahmoudian, Hadi Rezaei, Asra Sadat Talebi
{"title":"Determination of the most appropriate radionuclide for knee radiosynovectomy: Assessment of radiation dose, radiation-induced cancer risk, and post-treatment imaging feasibility.","authors":"Roghiyeh Bodaghi, Babak Mahmoudian, Hadi Rezaei, Asra Sadat Talebi","doi":"10.1016/j.ejmp.2025.104903","DOIUrl":"https://doi.org/10.1016/j.ejmp.2025.104903","url":null,"abstract":"<p><strong>Purpose: </strong>This study aims to systematically evaluate all radionuclides used in knee RSV to date and identify the most suitable radionuclide for knee RSV.</p><p><strong>Methods: </strong>To compare knee RSV with Y-90, P-32, Ho-166, Re-188, Au-198, Lu-177, Sm-153, and Re-186, we measured the radiation dose to non-target organs and the inducing of secondary malignancies in knee RSV patient, the radiation dose to family member and medical staff from the knee RSV patients, and the quality of post-treatment images.</p><p><strong>Results: </strong>The Lifetime Attributable Risks of cancer incidence and mortality and the Relative Risks of solid cancer incidence and mortality are significantly higher for Y-90 and P-32 in both adult and pediatric patients compared to other radionuclides used in knee RSV. Knee RSV with Re-188, Ho-166, Au-198, and Sm-153 induces a negligible risk of secondary malignancies. The average absorbed dose for medical staff and family members exposed to patients treated with Y-90 is also significantly greater than for those exposed to RSV patients treated with other radionuclides. In contrast, the absorbed dose for medical staff and family members exposed to RSV patients treated with Sm-153, Ho-166, and Au-198 is negligible. Sm-153, Ho-166, and Re-188 offer high-quality images in post-RSV planar imaging.</p><p><strong>Conclusion: </strong>Based on the findings of this study and the therapeutic range of the radionuclides, Re-188 has been identified as a suitable alternative to Y-90 for knee RSV in adults. At the same time, Sm-153 and Ho-166 have been recognized as the most appropriate radionuclides for pediatric knee RSV.</p>","PeriodicalId":56092,"journal":{"name":"Physica Medica-European Journal of Medical Physics","volume":"130 ","pages":"104903"},"PeriodicalIF":3.3,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142985646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Real-time dose measurement in minibeam radiotherapy using radioluminescence imaging. 放射发光成像在微束放射治疗中的实时剂量测量。
IF 3.3 3区 医学
Physica Medica-European Journal of Medical Physics Pub Date : 2025-01-11 DOI: 10.1016/j.ejmp.2025.104894
Francesca Marson, Stefano Pizzardi, Lisa Alborghetti, Federica Vurro, Maria Assunta Lacavalla, Claudio Fiorino, Antonello E Spinelli
{"title":"Real-time dose measurement in minibeam radiotherapy using radioluminescence imaging.","authors":"Francesca Marson, Stefano Pizzardi, Lisa Alborghetti, Federica Vurro, Maria Assunta Lacavalla, Claudio Fiorino, Antonello E Spinelli","doi":"10.1016/j.ejmp.2025.104894","DOIUrl":"https://doi.org/10.1016/j.ejmp.2025.104894","url":null,"abstract":"<p><strong>Purpose: </strong>Minibeam radiotherapy (MBRT) uses small parallel beams of radiation to create a highly modulated dose pattern. The aim of this study is to develop an optical radioluminescence imaging (RLI) approach to perform real-time dose measurement for MBRT.</p><p><strong>Methods: </strong>MBRT was delivered using an image-guided small animal irradiator equipped with a custom collimator. Five slabs of plastic scintillators with a thicknesses of 0.5, 1, 2, 3 and 10 mm were placed on top of a mouse phantom, to localize and measure the delivered dose. A thin radioluminescence film (Gd<sub>2</sub>O<sub>2</sub>S:Tb) was used to obtain the mini beam dose profile that was compared against GafChromic (GC) films measurements. The RLI signal was detected with a CMOS camera placed at 90 deg with respect to the beam axis. Monte Carlo (MC) simulations were also performed using TOPAS for comparison with the experimental results.</p><p><strong>Results: </strong>The measured peak to valley dose ratio (PVDR) obtained with RLI was 16.7 in line with GC films measurements. The differences between peak and valley dimension were less that 3% with respect to GC measurements. Using RLI performed with the scintillator slabs, it was possible to localize and measure in real-time MBRT delivery on the mouse phantom.</p><p><strong>Conclusions: </strong>We proposed a novel method for MBRT dose localization and measurement in real-time based on RLI. The results we obtained are in good agreement with GC film measurements.</p>","PeriodicalId":56092,"journal":{"name":"Physica Medica-European Journal of Medical Physics","volume":"130 ","pages":"104894"},"PeriodicalIF":3.3,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142973452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Proton therapy of lung cancer patients - Treatment strategies and clinical experience from a medical physicist's perspective. 肺癌患者的质子治疗-从医学物理学家的角度看治疗策略和临床经验。
IF 3.3 3区 医学
Physica Medica-European Journal of Medical Physics Pub Date : 2025-01-11 DOI: 10.1016/j.ejmp.2024.104890
Vicki Trier Taasti, Esther Kneepkens, Judith van der Stoep, Marije Velders, Maud Cobben, Anouk Vullings, Janou Buck, Femke Visser, Maud van den Bosch, Djoya Hattu, Jolein Mannens, Lieke In 't Ven, Dirk de Ruysscher, Judith van Loon, Stephanie Peeters, Mirko Unipan, Ilaria Rinaldi
{"title":"Proton therapy of lung cancer patients - Treatment strategies and clinical experience from a medical physicist's perspective.","authors":"Vicki Trier Taasti, Esther Kneepkens, Judith van der Stoep, Marije Velders, Maud Cobben, Anouk Vullings, Janou Buck, Femke Visser, Maud van den Bosch, Djoya Hattu, Jolein Mannens, Lieke In 't Ven, Dirk de Ruysscher, Judith van Loon, Stephanie Peeters, Mirko Unipan, Ilaria Rinaldi","doi":"10.1016/j.ejmp.2024.104890","DOIUrl":"https://doi.org/10.1016/j.ejmp.2024.104890","url":null,"abstract":"<p><strong>Purpose: </strong>Proton therapy of moving targets is considered a challenge. At Maastro, we started treating lung cancer patients with proton therapy in October 2019. In this work, we summarise the developed treatment strategies and gained clinical experience from a physics point of view.</p><p><strong>Methods: </strong>We report on our clinical approaches to treat lung cancer patients with the Mevion Hyperscan S250i proton machine. We classify lung cancer patients as small movers (tumour movement ≤ 5 mm) or large movers (tumour movement > 5 mm). The preferred beam configuration has evolved over the years of clinical treatment, and currently mostly two or three beam directions are used. All patients are treated with robustly optimised plans (5 mm setup and 3% range uncertainty). Small movers are planned based on a clinical target volume (CTV) with a 3 mm isotropic margin expansion to account for motion, while large movers are planned based on an internal target volume (ITV). All patients are treated in free-breathing.</p><p><strong>Results: </strong>Between October 2019 and December 2023, 379 lung cancer patients have been treated, of which 130 were large movers. The adaptation rate was 28%. The median treatment time has been reduced from 30 to 23 min. The mean dose to the heart, oesophagus, and lungs was on average 4.3, 15.4, and 11.0 Gy, respectively.</p><p><strong>Conclusions: </strong>Several treatment planning and workflow improvements have been introduced over the years, resulting in an increase of treatment quality and number of treated patients, as well as reduction of planning and treatment time.</p>","PeriodicalId":56092,"journal":{"name":"Physica Medica-European Journal of Medical Physics","volume":"130 ","pages":"104890"},"PeriodicalIF":3.3,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142973451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The application of radiomics in cancer imaging with a focus on lung cancer, renal cell carcinoma, gastrointestinal cancer, and head and neck cancer: A systematic review. 放射组学在癌症影像学中的应用,重点是肺癌、肾细胞癌、胃肠道癌和头颈部癌:系统综述。
IF 3.3 3区 医学
Physica Medica-European Journal of Medical Physics Pub Date : 2025-01-08 DOI: 10.1016/j.ejmp.2025.104891
Roberta Fusco, Vincenza Granata, Sergio Venanzio Setola, Piero Trovato, Roberta Galdiero, Mauro Mattace Raso, Francesca Maio, Annamaria Porto, Paolo Pariante, Vincenzo Cerciello, Eugenio Sorgente, Biagio Pecori, Mimma Castaldo, Francesco Izzo, Antonella Petrillo
{"title":"The application of radiomics in cancer imaging with a focus on lung cancer, renal cell carcinoma, gastrointestinal cancer, and head and neck cancer: A systematic review.","authors":"Roberta Fusco, Vincenza Granata, Sergio Venanzio Setola, Piero Trovato, Roberta Galdiero, Mauro Mattace Raso, Francesca Maio, Annamaria Porto, Paolo Pariante, Vincenzo Cerciello, Eugenio Sorgente, Biagio Pecori, Mimma Castaldo, Francesco Izzo, Antonella Petrillo","doi":"10.1016/j.ejmp.2025.104891","DOIUrl":"https://doi.org/10.1016/j.ejmp.2025.104891","url":null,"abstract":"<p><strong>Purpose: </strong>To study the application of radiomics in cancer imaging with a focus on lung cancer, renal cell carcinoma, gastrointestinal cancer, and head and neck cancer.</p><p><strong>Methods: </strong>Different electronic databases were considered. Articles published in the last five years were analyzed (January 2019 and December 2023). Papers were selected by two investigators with over 15 years of experience in Radiomics analysis in cancer imaging. The methodological quality of each radiomics study was performed using the Radiomic Quality Score (RQS) by two different readers in consensus and then by a third operator to solve disagreements between the two readers.</p><p><strong>Results: </strong>19 articles are included in the review. Among the analyzed studies, only one study achieved an RQS of 18 reporting multivariable analyzes with also non-radiomics features and using the validation phase considering two datasets from two distinct institutes and open science and data domain.</p><p><strong>Conclusion: </strong>This informative review has brought attention to the increasingly consolidated potential of Radiomics, although there are still several aspects to be evaluated before the transition to routine clinical practice. There are several challenges to address, including the need for standardization at all stages of the workflow and the potential for cross-site validation using heterogeneous real-world datasets. It will be necessary to establish and promote an imaging data acquisition protocol, conduct multicenter prospective quality control studies, add scanner differences and vendor-dependent characteristics; to collect images of individuals at additional time points, to report calibration statistics.</p>","PeriodicalId":56092,"journal":{"name":"Physica Medica-European Journal of Medical Physics","volume":"130 ","pages":"104891"},"PeriodicalIF":3.3,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142959212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A gender breakdown of unexpected benefits generated by work from home in STEM fields - A qualitative analysis of the WiMPBME Task Group survey. STEM领域在家工作产生的意外收益的性别分类- WiMPBME任务组调查的定性分析。
IF 3.3 3区 医学
Physica Medica-European Journal of Medical Physics Pub Date : 2025-01-08 DOI: 10.1016/j.ejmp.2025.104897
Eva Bezak, Kelsey J Sharrad, Loredana G Marcu, Magdalena Stoeva, Lenka Lhotska, Gilda Barabino, Fatimah Ibrahim, Sierin Lim, Eleni Kaldoudi, Ana Maria Marques da Silva, Peck Ha Tan, Virginia Tsapaki, Monique Frize
{"title":"A gender breakdown of unexpected benefits generated by work from home in STEM fields - A qualitative analysis of the WiMPBME Task Group survey.","authors":"Eva Bezak, Kelsey J Sharrad, Loredana G Marcu, Magdalena Stoeva, Lenka Lhotska, Gilda Barabino, Fatimah Ibrahim, Sierin Lim, Eleni Kaldoudi, Ana Maria Marques da Silva, Peck Ha Tan, Virginia Tsapaki, Monique Frize","doi":"10.1016/j.ejmp.2025.104897","DOIUrl":"https://doi.org/10.1016/j.ejmp.2025.104897","url":null,"abstract":"<p><strong>Background: </strong>Working from home during the Covid-19 pandemic was perceived differently by men and women working in STEM fields. The aim of this paper is to highlight the unexpected benefits generated by working from home during the pandemic.</p><p><strong>Methods: </strong>Qualitative methodology was used to analyze data, collected via survey. The survey designed and conducted by WiMPBME targeted both males and females working in medical-related STEM fields (physics and engineering) and was answered by 921 individuals from 76 countries across all continents. This report analysed the responses to one open-ended question of the survey, namely: \"What is the one positive that you have learnt/experienced as a result of working from home during this pandemic?\".</p><p><strong>Results: </strong>594 responded to the question of interest. Access to home office was reported by 72.2% of survey participants. Males were more likely than females to report no positives of working from home (62.9%). Females were more likely to cite quality time, physical and mental health as positive factors than males, and to mention children in their responses. The most commonly coded thematic unit for males was remote working, with many males reporting the feasibility of working from home. Increased work productivity, better time management and work organisation were other common themes highlighted by responders irrespective of gender.</p><p><strong>Conclusion: </strong>The findings of the survey show the diversity of perceptions about remote working in STEM fields, while highlighting the importance of considering family dynamics, individual circumstances as well as gender when evaluating varied experiences of STEM professionals.</p>","PeriodicalId":56092,"journal":{"name":"Physica Medica-European Journal of Medical Physics","volume":"130 ","pages":"104897"},"PeriodicalIF":3.3,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142959189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stability of radiomic features in magnetic resonance imaging of the female pelvis: A multicentre phantom study. 女性骨盆磁共振成像放射学特征的稳定性:一项多中心幻像研究。
IF 3.3 3区 医学
Physica Medica-European Journal of Medical Physics Pub Date : 2025-01-08 DOI: 10.1016/j.ejmp.2025.104895
Roberto Sghedoni, Daniela Origgi, Noemi Cucurachi, Giuseppe Castiglioni Minischetti, Davide Alio, Giovanni Savini, Francesca Botta, Simona Marzi, Marco Aiello, Tiziana Rancati, Davide Cusumano, Letterio Salvatore Politi, Vittorio Didonna, Raffaella Massafra, Antonella Petrillo, Antonio Esposito, Sara Imparato, Luca Anemoni, Chandra Bortolotto, Lorenzo Preda, Luca Boldrini
{"title":"Stability of radiomic features in magnetic resonance imaging of the female pelvis: A multicentre phantom study.","authors":"Roberto Sghedoni, Daniela Origgi, Noemi Cucurachi, Giuseppe Castiglioni Minischetti, Davide Alio, Giovanni Savini, Francesca Botta, Simona Marzi, Marco Aiello, Tiziana Rancati, Davide Cusumano, Letterio Salvatore Politi, Vittorio Didonna, Raffaella Massafra, Antonella Petrillo, Antonio Esposito, Sara Imparato, Luca Anemoni, Chandra Bortolotto, Lorenzo Preda, Luca Boldrini","doi":"10.1016/j.ejmp.2025.104895","DOIUrl":"https://doi.org/10.1016/j.ejmp.2025.104895","url":null,"abstract":"","PeriodicalId":56092,"journal":{"name":"Physica Medica-European Journal of Medical Physics","volume":"130 ","pages":"104895"},"PeriodicalIF":3.3,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterisation of the HollandPTC R&D proton beamline for physics and radiobiology studies. 用于物理和放射生物学研究的HollandPTC R&D质子束线的表征。
IF 3.3 3区 医学
Physica Medica-European Journal of Medical Physics Pub Date : 2025-01-07 DOI: 10.1016/j.ejmp.2024.104883
M Rovituso, C F Groenendijk, E van der Wal, W van Burik, A Ibrahimi, H Rituerto Prieto, J M C Brown, U Weber, Y Simeonov, M Fontana, D Lathouwers, M van Vulpen, M Hoogeman
{"title":"Characterisation of the HollandPTC R&D proton beamline for physics and radiobiology studies.","authors":"M Rovituso, C F Groenendijk, E van der Wal, W van Burik, A Ibrahimi, H Rituerto Prieto, J M C Brown, U Weber, Y Simeonov, M Fontana, D Lathouwers, M van Vulpen, M Hoogeman","doi":"10.1016/j.ejmp.2024.104883","DOIUrl":"https://doi.org/10.1016/j.ejmp.2024.104883","url":null,"abstract":"<p><p>HollandPTC is an independent outpatient center for proton therapy, scientific research, and education. Patients with different types of cancer are treated with Intensity Modulated Proton Therapy (IMPT). Additionally, the HollandPTC R&D consortium conducts scientific research into the added value and improvements of proton therapy. To this end, HollandPTC created clinical and pre-clinical research facilities including a versatile R&D proton beamline for various types of biologically and technologically oriented research. In this work, we present the characterization of the R&D proton beamline of HollandPTC. Its pencil beam mimics the one used for clinical IMPT, with energy ranging from 70 up to 240 MeV, which has been characterized in terms of shape, size, and intensity. For experiments that need a uniform field in depth and lateral directions, a dual ring passive scattering system has been designed, built, and characterized. With this system, field sizes between 2 × 2 cm<sup>2</sup> and 20 × 20 cm<sup>2</sup> with 98 % uniformity are produced with dose rates ranging from 0.5 Gy/min up to 9 Gy/min. The unique and customized support of the dual ring system allows switching between a pencil beam and a large field in a very simple and fast way, making the HollandPTC R&D proton beam able to support a wide range of different applications.</p>","PeriodicalId":56092,"journal":{"name":"Physica Medica-European Journal of Medical Physics","volume":"130 ","pages":"104883"},"PeriodicalIF":3.3,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142959200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A qualitative, quantitative and dosimetric evaluation of a machine learning-based automatic segmentation method in treatment planning for gastric cancer. 基于机器学习的自动分割方法在胃癌治疗计划中的定性、定量和剂量学评价。
IF 3.3 3区 医学
Physica Medica-European Journal of Medical Physics Pub Date : 2025-01-07 DOI: 10.1016/j.ejmp.2025.104896
Michalis Mazonakis, Eleftherios Tzanis, Stefanos Kachris, Efrossyni Lyraraki, John Damilakis
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