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.
Monte Carlo simulator of realistic x-ray beam for diagnostic applications
Rent:
Rent this article for
USD
10.1118/1.3453578
/content/aapm/journal/medphys/37/8/10.1118/1.3453578
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/37/8/10.1118/1.3453578

Figures

Image of FIG. 1.
FIG. 1.

Geometrical scheme of the photon efficiency test.

Image of FIG. 2.
FIG. 2.

Block diagram of the primary photon generator structure.

Image of FIG. 3.
FIG. 3.

Left: Shape of linear FoV described by Bath and Poludniowski. Right: The FoV shape implemented in this work.

Image of FIG. 4.
FIG. 4.

Left: Geometric representation of the penetration of electrons inside the anode and the emergence of the photon. Right: Scheme of interaction triangles.

Image of FIG. 5.
FIG. 5.

Scheme of the random number generation process. The example shows the generation of photon energies. The probability density function is discretized and the discrete cumulative function is calculated by the obtained histogram. Then a random number between 0 and 1 is extracted and the corresponding bin is found.

Image of FIG. 6.
FIG. 6.

FoV field grid division and field symmetry. The reference system used in the implementation is also indicated. The grid scheme, on the right, shows the plane of the detector. The reference axes are shown with their direction. (1, 1) represents the position of the first cell, while and are the number of the row and column of the last cell, respectively. The dashed line indicates the axis of symmetry of the grid. The relation of symmetry between the cells is also shown.

Image of FIG. 7.
FIG. 7.

Geometric scheme of the focal spot used in the simulation.

Image of FIG. 8.
FIG. 8.

Comparison of the models with TASMIP. Anode material: Tungsten; anode angle: 12°; tube voltage: 100 kVp; filtration: 1.2 mmAl.

Image of FIG. 9.
FIG. 9.

Comparison of the models with IPEM78 data. Anode material: Tungsten; anode angle: 15°; tube voltage: 100 kVp; filtration: None.

Image of FIG. 10.
FIG. 10.

Comparison of the models with Bhat and Pattison data. Anode material: Tungsten; anode angle: 12°; tube voltage: 100 kVp; filtration: 1.2 mmAl.

Image of FIG. 11.
FIG. 11.

Beam shape intensities; (a) and (c) as a function of the anode angle; (b) and (d) as a function of the tube tension. Figures (a) and (b) are the intensities in anode-cathode direction; figures (c) and (d) in the transverse direction.

Image of FIG. 12.
FIG. 12.

Comparison between the experimental test and simulation on the heel effect with a voltage of 80 kVp. Negative position values are for the anode side, while positive values are for the cathode side. Points represent the experimental data with their uncertainties and the solid line represents the simulated intensity.

Image of FIG. 13.
FIG. 13.

Comparison between the experimental test and simulation on the heel effect with a voltage of 100 kVp. Negative position values are for the anode side, while positive values are for the cathode side. Points represent the experimental data with their uncertainties and the solid line represents the simulated intensity.

Image of FIG. 14.
FIG. 14.

Comparison between the experimental test and simulation on the heel effect with a voltage of 120 kVp. Negative position values are for the anode side, while positive values are for the cathode side. Points represent the experimental data with their uncertainties and the solid line represents the simulated intensity.

Tables

Generic image for table
TABLE I.

List of characteristics of the computer architectures used in model benchmarking tests.

Generic image for table
TABLE II.

Tube characteristics and settings used in the heel effect test.

Generic image for table
TABLE III.

Filters materials and thickness of the used x-ray tube.

Generic image for table
TABLE IV.

Time execution benchmarks of the bremsstrahlung models. Execution time is indicated as .

Generic image for table
TABLE V.

Comparison of the RMS of the models with experimental data of literature.

Generic image for table
TABLE VI.

Differences between the energies of the maximum bremsstrahlung intensity of the simulation and data of literature . Positive values indicate that the simulated spectra are harder than those of the data, while negative values indicate that they are softer than data.

Loading

Article metrics loading...

/content/aapm/journal/medphys/37/8/10.1118/1.3453578
2010-07-21
2014-04-25
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Monte Carlo simulator of realistic x-ray beam for diagnostic applications
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/37/8/10.1118/1.3453578
10.1118/1.3453578
SEARCH_EXPAND_ITEM