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Accuracy of a 3D laser/camera surface imaging system for setup verification of the pelvic and thoracic regions in radiotherapy treatments
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10.1118/1.4769428
/content/aapm/journal/medphys/40/1/10.1118/1.4769428
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/40/1/10.1118/1.4769428

Figures

Image of FIG. 1.
FIG. 1.

A screenshot of the system interface representing the patient surface acquired with SentinelTM overlaid on the CT reference surface. Translation parameters along x (lat), y (long), and z axes (Vert) and rotations around x (pitch), y (roll), and z (rot) axes are shown. Quality indexes indicating overlap (percentage of points contained in the acquired surface that have a correspondent point on the reference image) and similarity (a parameter indicating the residual mean square error with respect to the maximum and minimum achievable) are reported.

Image of FIG. 2.
FIG. 2.

A screenshot of the system interface where scanning box dimensions are chosen. On the left side the acquisition BOX is shown overlapped on the reference CT surface. On the right side an acquired surface is represented.

Image of FIG. 3.
FIG. 3.

On the left side a snapshot of the acquisition BOX overlapped on the reference CT surface is shown. On the right side the resulting acquired surface is represented.

Image of FIG. 4.
FIG. 4.

Cumulative distributions of absolute differences between CBCT and Sentinel registration parameters relative to (a) translation and (b) rotation parameters. Different marks for pelvic and thorax districts are reported in the two graphs. Abbreviations: x, y, z,α, β, and γ represent, respectively: |Δx|,|Δy|,|Δz|,|Δα|,|Δβ|, and |Δγ|.

Image of FIG. 5.
FIG. 5.

Cumulative distributions of absolute differences between CBCT and Sentinel registration parameters (|Δx|,|Δy|,|Δz|)CBCT-S, (|Δα|,|Δβ|,|Δγ|)CBCT-S are reported. CTR images were used as a reference in (a) and (b) graphs while SR images were employed in (c) and (d). Different marks for pelvic and thorax regions were used in this case as well. Abbreviations: x, y, z, α, β, and γ represent, respectively: |Δx|,|Δy|,|Δz|,|Δα|,|Δβ|, and |Δγ|.

Tables

Generic image for table
TABLE I.

FG agreement of CBCT and Sentinel registration results.

Generic image for table
TABLE II.

SG agreement of CBCT and Sentinel registration parameters.

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/content/aapm/journal/medphys/40/1/10.1118/1.4769428
2012-12-17
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Accuracy of a 3D laser/camera surface imaging system for setup verification of the pelvic and thoracic regions in radiotherapy treatments
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/40/1/10.1118/1.4769428
10.1118/1.4769428
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