ArticleRadiological physics and technology2021
Maximum distance in single-isocenter technique of stereotactic radiosurgery with rotational error using margin-based analysis.
Article in Radiological physics and technology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed.
- Hybrid geometric and evolutionary optimization framework for radiosurgery planning: isocenter selection and angle optimization for multiple brain metastases.Radiological physics and technology · 2026Article
- Article
- Distance-adaptive geometric margins for residual rotational uncertainty in single-isocenter multitarget stereotactic radiosurgery.Physics and imaging in radiation oncology · 2026Article
- The geometric accuracy of off-axis targets in stereotactic body radiotherapy treatments across three linear accelerators.Journal of applied clinical medical physics · 2026Article
- Prospective registry study of single-isocenter dynamic conformal Arc SRS for multiple brain metastases.Scientific reports · 2025Article
- Analysis of the impact of rotation error on PTV margins in multiple brain metastases fractionated stereotactic radiotherapy based on single-isocenter multi-target technique.Frontiers in oncology · 2025Article
- Assessing tumor volumetric reduction with consideration for setup errors based on mathematical tumor model and microdosimetric kinetic model in single-isocenter VMAT for brain metastases.Physical and engineering sciences in medicine · 2024Article
- Dosimetric effects of rotational errors for single isocenter multiple targets in HyperArc plans: A phantom and retrospective imaging analysis study.Journal of applied clinical medical physics · 2024Article
- Comparison of dosimetric parameters and robustness for rotational errors in fractionated stereotactic irradiation using automated noncoplanar volumetric modulated arc therapy for patients with brain metastases: single- versus multi-isocentric technique.Radiological physics and technology · 2023Article
- Multicomponent mathematical model for tumor volume calculation with setup error using single-isocenter stereotactic radiotherapy for multiple brain metastases.Physical and engineering sciences in medicine · 2023Article
- Automatic measurement of beam-positioning accuracy at off-isocenter positions.Journal of applied clinical medical physics · 2023Article
- Detection of rotational errors in single-isocenter multiple-target radiosurgery: Is a routine off-axis Winston-Lutz test necessary?Journal of applied clinical medical physics · 2022Article
- Radiobiological evaluation considering setup error on single-isocenter irradiation in stereotactic radiosurgery.Journal of applied clinical medical physics · 2021Article
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Authors and funding
13 authors.
Funding
Abstract
Through geometrical simulation, we evaluated the effect of rotational error in patient setup on geometrical coverage and calculated the maximum distance between the isocenter and target, where the clinical PTV margin secures geometrical coverage with a single-isocenter technique. We used simulated spherical GTVs with diameters of 1.0 (GTV 1), 1.5 (GTV 2), 2.0 (GTV 3), and 3.0 cm (GTV 4). The location of the target center was set such that the distance between the target and isocenter ranged from 0 to 15 cm. We created geometrical coverage vectors so that each target was entirely covered by 100% of the prescribed dose. The vectors of the target positions were simultaneously rotated within a range of 0°-2.0° around the x-, y-, and z-axes. For each rotational error, the reduction in geometrical coverage of the targets was calculated and compared with that obtained for a rotational error of 0°. The tolerance value of the geometrical coverage reduction was defined as 5% of the GTV. The maximum distance that satisfied the 5% tolerance value for different values of rotational error at a clinical PTV margin of 0.1 cm was calculated. When the rotational errors were 0.5° for a 0.1 cm PTV margin, the maximum distances were as follows: GTV 1: 7.6 cm; GTV 2: 10.9 cm; GTV 3: 14.3 cm; and GTV 4: 21.4 cm. It might be advisable to exclude targets that are > 7.6 cm away from the isocenter with a single-isocenter technique to satisfy the tolerance value for all GTVs.
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