In external beam Radiotherapy, transverse and longitudinal dose measurements are taken by a radiation detector in order to characterise the radiation beams from medical linear accelerators.[1] Typically, an ionisation chamber and water phantom are used to create these radiation dose profiles. Water is used due to its tissue equivalence.
Transverse dose measurements are performed in the x (crossplane) or y (inplane) directions perpendicular to the radiation beam, and at a given depth (z) in the phantom. These are known as dose profiles. Dose measurements taken along the z direction create radiation dose distribution known as a depth-dose curve.
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8.3 - Megavoltage photon beam profiles
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8.2 - Photon Percentage Depth Dose (PDD) curves
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Health Benefits of Spirulina
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See also
References
- ^ D., Podgorsak, Ervin (2005). Radiation oncology physics : a handbook for teachers and students. International Atomic Energy Agency. ISBN 978-1-280-84923-7. OCLC 1078941036.
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This page was last edited on 14 August 2023, at 08:18