Continuing Professional Development—Radiation Therapy
Abstract
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TopicsAdvanced Radiotherapy Techniques · Advances in Oncology and Radiotherapy · Management of metastatic bone disease
Maximise your continuing professional development (CPD) by reading the following selected article and answer the five questions. Please remember to self‐claim your CPD and retain your supporting evidence. Answers will be available via the QR code and published in JMRS—Volume 72, Issue 4, December 2025.
Intrafraction Motion and Impact of Margin Reduction for MR‐Linac Online Adaptive Radiotherapy for Pancreatic Cancer Treatments
A. Fasala, M. Carr, Y. Surjan, P. Daghigh, J. de Leon, A. Burns, V. Batumalai, Journal of Medical Radiation Sciences (2025), https://doi.org/10.1002/jmrs.832.
- What role does abdominal compression play in managing intrafraction motion in pancreatic cancer treatment?
- It improves patient comfort during radiotherapy
- It reduces tumour motion by restricting respiratory movement
- It allows for dose escalation without harming healthy tissue
- It replaces the need for fiducial markers
- What was the minimum cine scan duration required for inclusion in the motion analysis?
- 2 min
- 4 min
- 5 min
- 6 min
- What specific planning strategy was used in this study for each fraction in stereotactic ablative radiotherapy (SABR) treatment on the MR‐Linac?
- Deep inspiration breath‐hold
- Gating strategy
- Adapt‐to‐shape (ATS) strategy
- Dose‐painting technique
- What percentage of the time did the adjusted planning target volume (PTV) remain within the specified imaging range in the study?
- 78.2%
- 84.6%
- 88.2%
- 92.8%
- Which outcome aligns with the adjusted planning target volume (PTV) margins?
- Higher radiation doses to surrounding tissues
- Improved dose metrics and reduced toxicity risks
- Increased treatment duration and complexity
- Reduced need for adaptive radiotherapy
Answers
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The reference list from the paper itself. Each links out to its DOI / PubMed record.
- 1M. Michalet , K. Bordeau , M. Cantaloube , et al., “Stereotactic MR‐Guided Radiotherapy for Pancreatic Tumors: Dosimetric Benefit of Adaptation and First Clinical Results in a Prospective Registry Study,” Frontiers in Oncology 12 (2022): 842402, 10.3389/fonc.2022.842402.35356227 PMC 8959839 · doi ↗ · pubmed ↗
- 2G. Grimbergen , H. Eijkelenkamp , H. D. Heerkens , B. W. Raaymakers , M. P. W. Intven , and G. J. Meijer , “Intrafraction Pancreatic Tumor Motion Patterns During Ungated Magnetic Resonance Guided Radiotherapy With an Abdominal Corset,” Physics and Imaging in Radiation Oncology 21 (2021): 1–5, 10.1016/j.phro.2021.12.001.35005257 PMC 8715205 · doi ↗ · pubmed ↗
- 3N. Tyagi , J. Liang , S. Burleson , et al., “Feasibility of Ablative Stereotactic Body Radiation Therapy of Pancreas Cancer Patients on a 1.5 Tesla Magnetic Resonance‐Linac System Using Abdominal Compression,” Physics and Imaging in Radiation Oncology 19 (2021): 53–59, 10.1016/j.phro.2021.07.006.34307919 PMC 8295846 · doi ↗ · pubmed ↗