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Comparison of online IGRT techniques for prostate IMRT treatment: Adaptive vs repositioning correction
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10.1118/1.3095767
/content/aapm/journal/medphys/36/5/10.1118/1.3095767
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/36/5/10.1118/1.3095767

Figures

Image of FIG. 1.
FIG. 1.

Online IGRT techniques applied in this clinical study.

Image of FIG. 2.
FIG. 2.

The (in percentage of prescribed dose) of the six patients delivered by the four IGRT techniques; markers represent the average and error bars represent the range (min/max) over 5 treatment days.

Image of FIG. 3.
FIG. 3.

(a) The daily D90, D50, and D30 of four online correction techniques (bone10, soft10, soft5, and adapt) and the new plan over five treatment days (labeled as d1–d5) for bladder. (b) The daily D90, D50, and D30 of four online correction techniques (bone10, soft10, soft5, and adapt) and the new plan over 5 treatment days (labeled as d1–d5) for rectum.

Image of FIG. 4.
FIG. 4.

The CTV and OAR DVH variations of two patients with the four IGRT techniques. The gray zone on each DVH plot indicates the range of the daily DVHs over five days. The solid black lines on the CTV-adapt chart indicate the original planned DVHs for the CTVs.

Image of FIG. 5.
FIG. 5.

Dosimetric comparison between plans from the adapt and new plans: (a) D90, D50, and D30 doses to the bladders; and (b) D90, D50, and D30 doses to the rectums. All numbers are the average over 5 treatment days.

Image of FIG. 6.
FIG. 6.

Dose distributions from one representative day with the four IGRT techniques: bone10, soft10, soft5, adapt, and the original plan, PTV10. The plans from bone10, soft10, soft5, and adapt techniques are overlaid on daily CBCT images while the original plan is overlaid on the planning CT images.

Image of FIG. 7.
FIG. 7.

Dose distributions from one representative day with the four IGRT techniques: bone10, soft10, soft5, adapt, and the original plan, PTV10. The plans from bone10, soft10, soft5, and adapt techniques are overlaid on daily CBCT images while the original plan is overlaid on the planning CT images.

Tables

Generic image for table
TABLE I.

The mean and standard deviation of minimum CTV dose over five treatment fractions.

Generic image for table
TABLE II.

The dose volume indices (D90, D50, and D30) for the bladder.

Generic image for table
TABLE III.

The dose volume indices (D90, D50, and D30) for the rectum.

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/content/aapm/journal/medphys/36/5/10.1118/1.3095767
2009-04-14
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Comparison of online IGRT techniques for prostate IMRT treatment: Adaptive vs repositioning correction
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/36/5/10.1118/1.3095767
10.1118/1.3095767
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