| Autor: |
Markus Eichner, Alexandra Hellerbach, Mauritius Hoevels, Klaus Luyken, Michael Judge, Daniel Rueß, Maximilian Ruge, Martin Kocher, Stefan Hunsche, Harald Treuer |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Zeitschrift für Medizinische Physik, Vol 34, Iss 3, Pp 428-435 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
0939-3889 |
| DOI: |
10.1016/j.zemedi.2023.01.001 |
| Popis: |
Purpose: In robotic stereotactic radiosurgery (SRS), optimal selection of collimators from a set of fixed cones must be determined manually by trial and error. A unique and uniformly scaled metric to characterize plan quality could help identify Pareto-efficient treatment plans. Methods: The concept of dose-area product (DAP) was used to define a measure (DAPratio) of the targeting efficiency of a set of beams by relating the integral DAP of the beams to the mean dose achieved in the target volume. In a retrospective study of five clinical cases of brain metastases with representative target volumes (range: 0.5–5.68 ml) and 121 treatment plans with all possible collimator choices, the DAPratio was determined along with other plan metrics (conformity index CI, gradient index R50%, treatment time, total number of monitor units TotalMU, radiotoxicity index f12, and energy efficiency index η50%), and the respective Spearman's rank correlation coefficients were calculated. The ability of DAPratio to determine Pareto efficiency for collimator selection at DAPratio |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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Full Text from ScienceDirect