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.
Calculation of strain images of a breast-mimicking phantom from 3D CT image data
Rent:
Rent this article for
USD
10.1118/1.4742902
/content/aapm/journal/medphys/39/9/10.1118/1.4742902
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/39/9/10.1118/1.4742902
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The FEM model with a cubic inclusion at its center (left). The top surface is pressed downward with the bottom surface fixed. The right figure shows the mesh diagram of the model.

Image of FIG. 2.
FIG. 2.

The center slices of the simulated 3D CT images taken without compression (top) and the difference images taken from the uncompressed phantom and 0.5 mm-compressed phantom images (bottom).

Image of FIG. 3.
FIG. 3.

Moving correlation of the two CT images to find the displacement. The displacement vector u represents the movement of the feature pattern of interest.

Image of FIG. 4.
FIG. 4.

A schematic diagram of the breast-mimicking phantom (left) and its photograph (right). A cylindrical inclusion with the diameter of 8 mm and the height of 10 mm is placed at the center of the cubic background.

Image of FIG. 5.
FIG. 5.

The breast-mimicking phantom under compression by the compressing device.

Image of FIG. 6.
FIG. 6.

The axial displacement map, u z (top), and the axial strain map, ɛ zz (bottom), obtained from the FEM analysis of the model.

Image of FIG. 7.
FIG. 7.

The axial displacement map, u z (top), and the axial strain map, ɛ zz (bottom), obtained from the simulated CT images of the model.

Image of FIG. 8.
FIG. 8.

Cross sectional CT images of the breast-mimicking phantom taken without compression (top) and the difference images taken from the uncompressed phantom and 1%-compressed phantom images (bottom).

Image of FIG. 9.
FIG. 9.

One example of the displacement vector map obtained from the experimental CT images. The missing points are the pixels at which the image correlation fails due to too low correlation.

Image of FIG. 10.
FIG. 10.

Displacement (top) and strain (bottom) images of the breast-mimicking phantom in the yz-plane taken with compression ratios of 1%–3%.

Image of FIG. 11.
FIG. 11.

Displacement (top) and strain (bottom) images of the breast-mimicking phantom in the zx-plane taken with compression ratios of 1%–3%.

Image of FIG. 12.
FIG. 12.

Displacement (top) and strain (bottom) images of the breast-mimicking phantom in the xy-plane taken with compression ratios of 1%–3%.

Loading

Article metrics loading...

/content/aapm/journal/medphys/39/9/10.1118/1.4742902
2012-08-16
2014-04-25
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Calculation of strain images of a breast-mimicking phantom from 3D CT image data
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/39/9/10.1118/1.4742902
10.1118/1.4742902
SEARCH_EXPAND_ITEM