ArticleJournal of radiation oncology2018
Inter-fraction movements of the prostate and pelvic lymph nodes during IGRT.
Article in Journal of radiation oncology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Six-degrees-of-freedom pelvic bone monitoring on 2D kV intrafraction images to enable multi-target tracking for locally advanced prostate cancer.Medical physics · 2025Article
- Pelvic lymph node motion during cone-beam computed tomography guided stereotactic radiotherapy.Clinical and translational radiation oncology · 2024Article
- A multi-institutional comparison of retrospective deformable dose accumulation for online adaptive magnetic resonance-guided radiotherapy.Physics and imaging in radiation oncology · 2024Article
- The New Kid on the Block: Online Adaptive Radiotherapy in the Treatment of Gynecologic Cancers.Current oncology (Toronto, Ont.) · 2023Review
- SBRT treatment of abdominal and pelvic oligometastatic lymph nodes using ring-mounted Halcyon Linac.Journal of applied clinical medical physics · 2021Article
- Intra-fraction displacement of the prostate bed during post-prostatectomy radiotherapy.Radiation oncology (London, England) · 2021Article
- Impact of neoadjuvant androgen deprivation therapy on magnetic resonance imaging features in prostate cancer before radiotherapy.Physics and imaging in radiation oncology · 2021Article
- Implementing daily soft tissue image guidance with reduced margins for post-prostatectomy radiotherapy: research-based changes to clinical practice.Journal of medical radiation sciences · 2019Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivitiesThe aim of this study was to evaluate inter-fraction movements of lymph node regions that are commonly included in the pelvic clinical target volume (CTV) for high-risk prostate cancer patients. We also aimed to evaluate if the movements affect the planning target volumes.
methodsTen prostate cancer patients were included. The patients underwent six MRI scans, from treatment planning to near end of treatment. The CTV movements were analyzed with deformable registration technique with the CTV divided into sections. The validity of the deformable registration was assessed by comparing the results for individual lymph nodes that were possible to identify in all scans.
resultsUsing repetitive MRI, measurements showed that areas inside the CTV (lymph nodes) in some extreme cases were as mobile as the prostate and not fixed to the bones. The lymph node volumes closest to the prostate did not tend to follow the prostate motion. The more cranial lymph node volumes moved less, but still independently, and they were not necessarily fixed to the pelvic bones. In 95% of the cases, the lymph node motion in the R-L direction was 2-4 mm, in the A-P direction 2-7 mm, and in the C-C direction 2-5 mm depending on the CTV section.
conclusionLymph nodes and prostate were most mobile in the A-P direction, followed by the C-C and R-L directions. This movement should be taken into account when deciding the margins for the planning target volumes (PTV).
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