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.
Dose perturbation of a novel cobalt chromium coronary stent on intravascular brachytherapy: A Monte Carlo study
Rent:
Rent this article for
USD
10.1118/1.1833592
/content/aapm/journal/medphys/32/1/10.1118/1.1833592
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/32/1/10.1118/1.1833592

Figures

Image of FIG. 1.
FIG. 1.

Example of (a) the PENTA SS stent model, and (b) the VISION stent model, both expanded to a diameter. The space between struts was measured, and the effective strut width of a ring-shaped strut was calculated to yield a similar metal-to-tissue ratio.

Image of FIG. 2.
FIG. 2.

MCNPX models for a source inside a Nylon-12 catheter. Both the SS and stents are long and expanded to a diameter. The six rings have an effective width and spacing that yields a metal-to-tissue ratio similar to that of the actual stents.

Image of FIG. 3.
FIG. 3.

(a) PENTA SS stent MCNPX results of the dose perturbation factor (DPF) along the source axis ( is the coordinate system origin at source bisector). is the radial distance from the source axis and is the centroid of the scoring bin directly behind the stent (score bin radial thickness is ). is the centroid of the scoring bin at the prescription point. Note the enhancement in DPF between two adjacent struts owing to lateral scattering of the secondary electrons from the adjacent struts. (b) VISION stent MCNPX results of the dose perturbation factor (DPF) along the source axis ( is the coordinate system origin at source bisector). is the radial distance from the source axis and is the centroid of the scoring bin directly behind the stent (score bin radial thickness is ). is the centroid of the scoring bin at the prescription point. Note the enhancement in DPF between two adjacent struts owing to lateral scattering of the secondary electrons from the adjacent struts.

Image of FIG. 4.
FIG. 4.

(a) PENTA SS stent MCNPX results of the dose perturbation factor (DPF) along the source axis ( is the coordinate system origin at source bisector). is the radial distance from the source axis and is the centroid of the scoring bin directly behind the stent (score bin radial thickness is ). is the centroid of the scoring bin at the prescription point. (b) VISION stent MCNPX results of the dose perturbation factor (DPF) along the source axis ( is the coordinate system origin at source bisector) ( model). is the radial distance from the source axis and is the centroid of the scoring bin directly behind the stent (score bin radial thickness is ). is the centroid of the scoring bin at the prescription point.

Image of FIG. 5.
FIG. 5.

PENTA SS stent MCNPX results of the dose perturbation factor (DPF) along the source axis ( is the coordinate system origin at source bisector). is the radial distance from the source axis and is the centroid of the scoring bin directly behind the stent (score bin radial thickness is ). is the centroid of the scoring bin at the prescription point. (b) diam VISION stent MCNPX results of the dose perturbation factor (DPF) along the source axis ( is the coordinate system origin at source bisector) ( model). is the radial distance from the source axis and is the centroid of the scoring bin directly behind the stent (score bin radial thickness is ). is the centroid of the scoring bin at the prescription point.

Image of FIG. 6.
FIG. 6.

Dose perturbation factor as a function of the radial distance from source axis in water and through a strut located from the source axis (expanded inside a vessel model).

Tables

Generic image for table
TABLE I.

Comparison of PENTA™ and VISION™ stent models.

Generic image for table
TABLE II.

Summary of the dose perturbation factor (DPF) resultsa for the -long SS (PENTA) and (VISION) stents as calculated from MCNPX models. Data in parentheses are the mean percent dose reduction .

Loading

Article metrics loading...

/content/aapm/journal/medphys/32/1/10.1118/1.1833592
2005-01-03
2014-04-24
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Dose perturbation of a novel cobalt chromium coronary stent on P32 intravascular brachytherapy: A Monte Carlo study
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/32/1/10.1118/1.1833592
10.1118/1.1833592
SEARCH_EXPAND_ITEM