Analytic evaluation of heterogeneity locations for external beam treatment planning | Zendy

Starkschall George | Zendy

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Analytic evaluation of heterogeneity locations for external beam treatment planning

Author(s) -

Starkschall George

Publication year - 1986

Publication title -

medical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.473

H-Index - 180

eISSN - 2473-4209

pISSN - 0094-2405

DOI - 10.1118/1.595839

Subject(s) - fourier series , transcendental equation , fourier transform , mathematical analysis , line (geometry) , mathematics , series (stratigraphy) , fourier analysis , geometry , numerical analysis , geology , paleontology

A method has been developed to calculate depths of calculation points analytically in patient contours containing internal heterogeneities. In this method, each contour is approximated by a Fourier series comprising five to ten terms. Using this approximation, the intersections of a ray line with each contour are found as the solution of a transcendental equation. Once these intersections have been located, effective depths used in heterogeneity calculations can readily be calculated.

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