Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Testing of the analytical anisotropic algorithm for photon dose calculation.

Ann Van Esch1, Laura Tillikainen, Jukka Pyykkonen

  • 17Sigma, QA-team in Radiotherapy Physics, Belgium and Clinique Ste Elisabeth, Namur, Belgium. ann.vanesch@7sigma.be

Medical Physics
|December 13, 2006
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Evaluating the role of plan complexity metrics in online adaptive radiotherapy for pancreatic cancer patients.

Medical physics·2026
Same author

Organ at risk sparing by non-coplanar prone breast radiotherapy on Halcyon/Ethos linacs utilizing breast couch slewing.

Scientific reports·2026
Same author

Characterization of Plan Complexity and Its Role in Quality Assurance for AI-Assisted CBCT-Based Online Adaptive Radiotherapy of Prostate Cancer.

Cancers·2026
Same author

Validation of absolute dose calculation of a single 125I-seed for ophthalmic brachytherapy within distance range 1-15 mm using a diode detector.

Acta oncologica (Stockholm, Sweden)·2026
Same author

Patient doses in image-guided radiotherapy: status in Europe for cone-beam CT imaging in the pelvic region.

Radiology and oncology·2026
Same author

Quantifying uncertainty in calibration and clinical application of EBT-4 Gafchromic film dosimetry.

Medical physics·2026

The analytical anisotropic algorithm (AAA) significantly enhances dose calculation accuracy in radiation therapy, particularly in heterogeneous media, by improving penumbra and low-dose region modeling compared to the single pencil beam (SPB) algorithm.

Area of Science:

  • Medical Physics
  • Radiation Oncology
  • Computational Dosimetry

Background:

  • The single pencil beam (SPB) algorithm has limitations in accurately calculating dose distributions, especially in complex or heterogeneous environments.
  • Advancements in treatment planning systems necessitate improved dose calculation algorithms for enhanced treatment efficacy and patient safety.

Purpose of the Study:

  • To evaluate the accuracy of the analytical anisotropic algorithm (AAA) in dose distribution calculations for photon beams.
  • To compare the performance of AAA against the single pencil beam (SPB) algorithm in homogeneous and heterogeneous media.

Main Methods:

  • Implementation of the AAA in the Eclipse treatment planning system, replacing the SPB algorithm.
  • Validation using Monte-Carlo precalculated scatter kernels and an optimization algorithm for parameter configuration.

Related Experiment Videos

  • Testing across various photon beam energies (6, 15, 18 MV), field sizes, and phantom types (homogeneous, heterogeneous, anthropomorphic).

    • Main Results:

    • AAA demonstrated improved accuracy in basic beam data configuration (within 3%, 1 mm).
    • Significant improvements in penumbra modeling (1%, 1 mm) and dose calculations in heterogeneous materials (cork phantoms) compared to SPB.
    • AAA showed better agreement with measurements in heterogeneous phantoms, especially for higher energies (18 MV).

    Conclusions:

    • The analytical anisotropic algorithm (AAA) offers superior accuracy in dose calculations compared to the single pencil beam (SPB) algorithm.
    • AAA provides substantial benefits in modeling dose distributions within heterogeneous media and improving penumbra definition.
    • Further optimization of the electron contamination model may enhance AAA's accuracy around dmax, particularly for specific clinical setups.