Abstract
A technical note: When Do Differences in IMRT Fluence Intensities have Clinical Significance?
Highlights
The intensity modulated radiation therapy (IMRT) has been the treatment modality for several cancers’ treatment sites [1,2]
Artificial changes of more than 10% of the fluence area in the field were made by a value of +5% in areas of a high dose gradient and dose levels in the field to simulate a few mis-calibrated leaves; these changes were followed by a recalculation of the IMRT plan
Field 2 exhibits the most of the points in the field that did not meet the evaluation criteria. These results showed that the IMRT plan failed to meet the criteria of 3%/3mm
Summary
The intensity modulated radiation therapy (IMRT) has been the treatment modality for several cancers’ treatment sites [1,2]. The beauty of the technique, its ability to maximize the dose to the target volume while further reduces the dose to the organ at risk. The technique provides a good treatment outcome but it quality assurance has of the challenges in the verifications of the dose delivery [3,4]. The quality assurance of the technique in terms of the verification of the dose delivery has been the most concern. This is usually done through comparing the calculated IMRT plan using the planning system and the measured on with different dosimetric modalities such as film dosimetry and 2D-Array detector
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