ArticleRadiation oncology (London, England)2016
Intra-fraction motion of the prostate is not increased by patient couch shifts.
Article in Radiation oncology (London, England), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Prostate intra-fraction motion recorded by transperineal ultrasound.Scientific data · 2024Article
- The ProMotion LMU dataset (2022 edition), prostate intra-fraction motion recorded by transperineal ultrasound.Scientific data · 2022Article
- The ProMotion LMU dataset, prostate intra-fraction motion recorded by transperineal ultrasound.Scientific data · 2019Article
- Dosimetric impact of intrafraction motion on boosts on intraprostatic lesions: a simulation based on actual motion data from real time ultrasound tracking.Radiation oncology (London, England) · 2019Article
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4 authors.
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Abstract
backgroundDuring a fraction of external beam radiotherapy for prostate cancer, a mismatch between target volume and dose coverage may accumulate over time due to intra-fraction motion. One way to remove the residual error is to perform a couch shift in opposite direction. In principle, such couch shifts could cause secondary displacements of the patient and prostate. Hence it is interesting to investigate if couch shifts might amplify intra-fraction motion.
findingsIntra-fraction motion of the prostate and patient couch position were simultaneously recorded during 359 fractions in 15 patients. During this time, a total of 22 couch shifts of up to 31.5 mm along different axes were recorded. Prostate position and couch position were plotted before, during and after each couch shift. There was no visible impact of couch shifts on prostate motion. The standard deviation of prostate position was calculated before, during and after each couch shift. The standard deviation did not significantly increase during couch shifts (by 3 % on average, p = 0.88) and even slightly decreased after a couch shift (by 37 % on average; p = 0.02).
conclusionsShifts of the patient couch did not adversely affect the motion of the prostate relative to the patient couch. Hence, shifts of the patient couch may be a viable way to correct the position of the prostate relative to the dose distribution.
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