1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
A comparison of postimplant dosimetry for 103Pd versus 131Cs seeds on a retrospective series of PBSI patients
Rent:
Rent this article for
USD
10.1118/1.3651633
/content/aapm/journal/medphys/38/11/10.1118/1.3651633
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/38/11/10.1118/1.3651633

Figures

Image of FIG. 1.
FIG. 1.

Open diamonds are implanted air kerma strength for 103Pd implants as a function of PTV diameter, while the filled circles are the implanted air kerma strength of 131Cs implants. The expression in the solid box is the nomogram relating the implanted air kerma strength to the PTV diameter for 103Pd, while the expression in the dashed box relates the same for 131Cs.

Image of FIG. 2.
FIG. 2.

This is a graphical comparison between 103Pd and 131Cs implants comparing the V100 [Fig. 2(a)] and the V200 [Fig. 2(b)] preimplantation dosimetric parameters. The dashed line corresponds to the unity line, which represents the point where both of the implants are equivalent for that specific dosimetric parameter.

Image of FIG. 3.
FIG. 3.

This is a graphical comparison between 103Pd and 131Cs implants comparing the V100 [Fig. 3(a)] and the V200 [(Fig. 3(b)] two month postimplant dosimetric parameters.

Image of FIG. 4.
FIG. 4.

Postimplant dose distribution of a typical PBSI patient with a 131Cs and a 103Pd implant. It is immediately evident that the V200% (red) is significantly smaller for the 131Cs implant. The V9Gy [the volume within the target that receives 9 Gy or more] (grey) and the V4.5Gy [the volume within the target that receives 4.5 Gy or more] (white) covers a larger amount of lung in the 131Cs implant compared to the 103Pd implant. This is a result of the higher energy photons emitted by 131Cs. Isodose legend is in Gy bracketed term is in percentage of the prescribed dose.

Tables

Generic image for table
TABLE I.

The average V100, V90, D90, V150, and V200 dosimetric parameters for 131Cs and 103Pd on preimplant and postimplant dose distributions. Both the absolute volumetric and relative percentage data have been tabulated where appropriate. The differences between 131Cs and 103Pd in the relative percentage data for all of the dosimetric parameters were statistically significant with a p-value of <0.05. The average volume of the PTV and surgical scar for the preimplant and postimplant treatment plans has been evaluated. The preimplant PTV used a 15 mm margin expansion on the surgical scar for treatment planning, while the postimplant PTV used a 10 mm margin expansion for evaluation.

Loading

Article metrics loading...

/content/aapm/journal/medphys/38/11/10.1118/1.3651633
2011-10-20
2014-04-21
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A comparison of postimplant dosimetry for 103Pd versus 131Cs seeds on a retrospective series of PBSI patients
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/38/11/10.1118/1.3651633
10.1118/1.3651633
SEARCH_EXPAND_ITEM