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Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
Published on: March 11, 2021
21 years of biologically effective dose.
1University of Wisconsin Medical School, Madison, WI 53792, USA. jackfowlersbox@g-mail.com
The British Journal of Radiology
|July 7, 2010
Summary
Biologically effective dose (BED) quantifies radiotherapy effects, considering dose, time, and fractionation. Despite critiques, BED shows acceptable clinical results and is increasingly used across various radiation therapy modalities.
Area of Science:
- Radiobiology
- Radiation Oncology
- Medical Physics
Background:
- The concept of biologically effective dose (BED) was introduced in 1989 to quantitatively assess radiotherapy effects.
- BED accounts for dose per fraction, dose rate, total dose, and overall treatment time.
- It has been crucial for understanding and comparing diverse radiotherapy fractionation schedules.
Purpose of the Study:
- To evaluate the clinical utility and evolution of the biologically effective dose (BED) concept.
- To clarify the distinction between BED and biologically equivalent dose.
- To discuss advancements in BED calculations and its application in modern radiotherapy.
Main Methods:
- Review of clinical outcomes and literature concerning BED applications.
- Analysis of BED formula modifications to include high-LET radiation and time parameters.
- Discussion of BED's role in novel dose delivery techniques and treatment optimization.
Main Results:
- Generally acceptable clinical results have been reported using BED.
- BED has proven effective for comparing treatments across various modalities, including those with large fractions.
- Improvements to the BED formula have enhanced its applicability for high-LET radiation and time-dependent effects.
Conclusions:
- BED is a valuable tool for quantifying radiotherapy effects and is in increasing clinical use.
- Despite theoretical challenges, BED demonstrates practical utility in optimizing treatments.
- BED is essential for dose escalation, radiochemotherapy, brachytherapy, and emerging radiation technologies.
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