Calculating percent depth dose with the electron pencil-beam redefinition algorithm
نویسندگان
چکیده
منابع مشابه
Calculating percent depth dose with the electron pencil‐beam redefinition algorithm
In the present work, we investigated the accuracy of the electron pencil-beam redefinition algorithm (PBRA) in calculating central-axis percent depth dose in water for rectangular fields. The PBRA energy correction factor C(E) was determined so that PBRA-calculated percent depth dose best matched the percent depth dose measured in water. The hypothesis tested was that a method can be implemente...
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The growing sophistication in radiation treatment strategies requires the utilization of increasingly accurate, but computationally intense, dose algorithms, such as the electron pencil-beam redefinition algorithm (PBRA). The sequential implementation of the PBRA is in production use at the MD Anderson Cancer center. The PBRA is difficult to parallelize because of the large amounts of data invo...
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We describe a new pencil beam (PB) algorithm that computes, from first principles, absolute fluence or dose per incident proton charge in a known heterogeneous terrain irradiated by known proton beams. PB transport is by standard Fermi-Eyges theory. Heterogeneites are handled by breaking up PBs using redefinition and recursive dynamic splitting. The terrain is discretized into uniform or hetero...
متن کاملElectron beam central axis depth dose measurements.
Central axis depth dose measurements were made by the Radiological Physics Center on over 70 electron-producing machines used in radiation therapy. These data were consistent for each machine model and nominal energy. However, the data show that depth dose relations can vary significantly among different machine models for electron beams having the same nominal energy. Analysis shows that both ...
متن کاملPurpose: To evaluate the accuracy of electron dose calculated using the pencil-beam redefinition algorithm (PBRA) in patient-like 2D phantoms. With the recent availability of bolus electron conformal therapy (ECT), conforming of the 90% dose surface to the planning
ID: 16536 Title: Accuracy of electron dose from pencil-beam redefinition algorithm in patient-like 2D phantoms Purpose: To evaluate the accuracy of electron dose calculated using the pencil-beam redefinition algorithm (PBRA) in patient-like 2D phantoms. With the recent availability of bolus electron conformal therapy (ECT), conforming of the 90% dose surface to the planning target volume (PTV) ...
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ژورنال
عنوان ژورنال: Journal of Applied Clinical Medical Physics
سال: 2007
ISSN: 1526-9914
DOI: 10.1120/jacmp.v8i2.2443