Dosimetry for IMRT
Dosimetry for IMRT
Dosimetry for IMRT
- TAGS
- dosimetry
- imrt
- www.aapm.org
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Dose Ratio<br />
Dose<br />
20<br />
18<br />
16<br />
14<br />
12<br />
10<br />
8<br />
6<br />
4<br />
2<br />
Dose and Dose/FW as a<br />
Function of Field Width (FW)<br />
Divide by Field Width and Normalize<br />
Water Tank Dose Ratios<br />
Normalized<br />
Doose/FW<br />
Dose/FWW<br />
Ratio<br />
1.2<br />
1<br />
0.8<br />
0.6<br />
0.4<br />
0.2<br />
Water Tank Dose/FW Ratios<br />
Plot of dose D(FW) Plot of D/FW<br />
Basically a measure<br />
of the clipping the<br />
photon source so rce seen<br />
<strong>for</strong> the smaller field<br />
widths.<br />
0<br />
0<br />
0 1 2 3 4 5<br />
0 1 2 3 4 5<br />
Measured Measured Field Field Width, FW FW (cm) (cm) Measured Field Width, FW (cm)<br />
Measured Field Width, FW (cm)<br />
From Brian Hundertmark
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