MR-Guided Radiation Therapy for Prostate and Pancreas Cancer Treatment: A Dosimetric Study Across Two Major MR-Linac Platforms Article Swipe
Hui‐Ming Dong
,
Jonathan Pham
,
Michael Lauria
,
Caiden Atienza
,
B Sloman
,
Barry Paul
,
Jennifer R. Davis
,
Michael J. Saracen
,
Amar U. Kishan
,
Ann C. Raldow
,
X. Sharon Qi
,
Daniel E. Hyer
,
James Lamb
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3390/cancers17162708
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3390/cancers17162708
Background/Objectives: MR-guided radiation therapy (MRgRT) has rapidly evolved into an important treatment modality, with the Elekta Unity and ViewRay MRIdian systems being two major MR-linac platforms. Despite the shared concept of MRgRT, the two platforms elected different system designs that could potentially impact the dosimetric characteristics and quality of a treatment. In this study, we aim to perform a comparative dosimetric investigation between these two MR-linac systems in prostate and pancreas cancers. Methods: Dosimetric characteristics were evaluated by retrospectively re-creating 20 clinical prostate and pancreas cases originally treated on MRIdian using the Unity system, adhering to MIRAGE and SMART clinical trial constraints. Treatment plans were re-created with matching planning images, structures, beam geometry, and dose parameters. To ensure comparison consistency, all Unity treatment plans were normalized to match the target coverage of the MRIdian counterparts, and the organ-at-risk (OAR) dose was investigated. Results: Most OARs’ dose-volume metrics showed no statistically significant differences. For prostate patients, Unity demonstrated lower rectum V36Gy (p = 0.0095), V38Gy (p = 0.0043), V40Gy (p = 0.0469), and lower left (p = 0.0137) and right femur V20Gy (p = 0.0020). For pancreas patients, Unity plans had a lower mean liver dose (p = 0.0371). All Unity plans had a Gamma passing rate > 90%, confirming the clinical deliverability. Mean delivery times were 12.78 ± 1.68 and 13.53 ± 1.88 min for MRIdian and Unity prostate plans, respectively, and 14.58 ± 2.78 and 17.40 ± 3.77 min for MRIdian and Unity pancreas plans, respectively. Conclusions: Overall, comparable treatment quality and delivery times were observed between the two platforms.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/cancers17162708
- https://www.mdpi.com/2072-6694/17/16/2708/pdf?version=1755684468
- OA Status
- gold
- References
- 36
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4413353475
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4413353475Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/cancers17162708Digital Object Identifier
- Title
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MR-Guided Radiation Therapy for Prostate and Pancreas Cancer Treatment: A Dosimetric Study Across Two Major MR-Linac PlatformsWork title
- Type
-
articleOpenAlex work type
- Language
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enPrimary language
- Publication year
-
2025Year of publication
- Publication date
-
2025-08-20Full publication date if available
- Authors
-
Hui‐Ming Dong, Jonathan Pham, Michael Lauria, Caiden Atienza, B Sloman, Barry Paul, Jennifer R. Davis, Michael J. Saracen, Amar U. Kishan, Ann C. Raldow, X. Sharon Qi, Daniel E. Hyer, James LambList of authors in order
- Landing page
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https://doi.org/10.3390/cancers17162708Publisher landing page
- PDF URL
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https://www.mdpi.com/2072-6694/17/16/2708/pdf?version=1755684468Direct link to full text PDF
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YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
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https://www.mdpi.com/2072-6694/17/16/2708/pdf?version=1755684468Direct OA link when available
- Concepts
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Medicine, Prostate cancer, Prostate, Nuclear medicine, Radiation treatment planning, Dosimetry, Rectum, Pancreas, Radiation therapy, Pancreatic cancer, Cancer, Radiology, Medical physics, Surgery, Internal medicineTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
- References (count)
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36Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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