Applications of Monte Carlo methods in medical radiology
| Autor: | B. M. Wheatley, J. M. Sidwell, T. E. Burlin |
|---|---|
| Rok vydání: | 1973 |
| Předmět: |
Physics
Operations Research business.industry Monte Carlo method Compton scattering Radiotherapy Dosage General Medicine Electron Spectral line Imaging phantom Computational physics Line (geometry) Methods Dosimetry Radiology Nuclear Medicine and imaging Atomic number Nuclear medicine business Radiology |
| Zdroj: | The British journal of radiology. 46(545) |
| ISSN: | 0007-1285 |
| Popis: | Papers in this journal have already shown the value of Monte Carlo methods in the dosimetry of internal emitters (Ellett, Callahan and Brownell 1964; 1965) and in external dosimetry in homogeneous phantoms (Sidwell, Burlin and Wheatley, 1969). The latter paper drew attention to the value of the methods in dealing with dose estimation problems involving inhomogeneities and in obtaining spectra in different regions of the phantom to facilitate dose estimation in regions of high atomic number. The value of Monte Carlo methods in deriving spectra is illustrated in Fig. 1 for a 280 kV scattered spectrum (HVL 2·6 mm Cu) at a depth of 15 cm. The broken line has been calculated by Bruce (1956) using the Monte Carlo technique and is compared with the measurements of Cormack (1958) which are represented by the solid line. This information on the photon spectra at a point in the body is fundamental in calculating the dose to materials of different atomic number such as fat and bone at a depth within a patient or to ... |
| Databáze: | OpenAIRE |
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