A method of correction for curvature and inhomogeneities in computer aided calculation of external beam radiation dose distributions
✍ Scribed by Radhe Mohan; Pietro P Antich
- Publisher
- Elsevier Science
- Year
- 1979
- Weight
- 714 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0010-468X
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✦ Synopsis
This paper deals with the problem of finding the effective pathlength along a ray passing through a patient's outline and internal structure. The pathlength contributes to the correction applied for curvature and inhomogeneities in the computer-aided calculation of external beam radiation dose distributions .
The pathlength is found by first determining the intersections of the ray with the contours defining the patient's body and the interior inhomogeneities . From these intersections the geometric length within each contour is obtained . This information is then employed in a treatment planning program for high energy gamma and X-rays and electrons, in which the radiation dose distribution is computed taking into account the actual inhomogeneous tissue structures .
Other applications of the techniques described to problems in the field of radiation therapy are briefly discussed .
Radiation therapy Radiation treatment plannine