also reported that the diode array data showed a trend of angular dependence, decreasing from 100% at 0o down to 90% at 80o gantry angle [ 25 ]; however, the overall measurement results from rotational delivery are within clinically acceptable accuracy due to the averaging effect from all the gantry angles [ 26 ].
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Dose verification of helical tomotherapy intensity modulated radiation therapy planning using 2D-array ion chambers.
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