ArticleBioMed research international2019
An Empirical Model for Describing the Small Field Penumbra in Radiation Therapy.
Article in BioMed research international, 2019. 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.
- In silico assessment of out-of-field dose in multiple brain metastases stereotactic radiosurgery.Physical and engineering sciences in medicine · 2026Article
- Dosimetric investigation of small fields in radiotherapy measurements using Monte Carlo simulations, CC04 ionization chamber, and razor diode.Physical and engineering sciences in medicine · 2025Article
- An investigation of kV mini-GRID spatially fractionated radiation therapy: dosimetry and preclinical trial.Physics in medicine and biology · 2022Article
- Validation of Monte carlo Geant4 multithreading code for a 6 MV photon beam of varian linac on the grid computing.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation OncologyArticle
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeWe developed a mathematic empirical model for describing the small field penumbra in order to analyze the potential dose perturbation caused by overlapping field to avoid the dose calculation errors in linear accelerator-based radiosurgery. MATERIALS AND
methodsA ball phantom was fabricated for measuring penumbra at 4 different gantry angles in the coplanar plane. A least square root estimation (LSRE) Model was created to fit the measured penumbra dose profile and to predict the penumbra dose profile at any gantry angles. The Sum of Squared Errors (SSE) was used for finding the parameters
resultsThe results showed that the larger the gantry angle of the field, the more the expansion of the penumbra dose profile. The least square root estimation model for describing small field penumbra is as follows:
conclusionThe dose distribution in penumbra region of small field can be created by the LSRE model and the potential overdosage or underdosage owing to overlapping field perturbation can be estimated.
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