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Image-guided respiratory-gated lung stereotactic body radiotherapy: Which target definition is optimal?
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10.1118/1.3129161
/content/aapm/journal/medphys/36/6/10.1118/1.3129161
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/36/6/10.1118/1.3129161

Figures

Image of FIG. 1.
FIG. 1.

Generation of PTVs: : SM; : of all the phases within the gating SM; and : SM. IM: Internal margin, SM: Setup margin.

Image of FIG. 2.
FIG. 2.

Comparison of the three ITV contours on CT image at phase 50% for patient No. 3: (a) Transverse view; (b) coronal view; (c) sagittal view; and (d) 3D view. Solid: ; dot: ; dash: .

Image of FIG. 3.
FIG. 3.

Volume comparison of different ITVs and PTVs: (a) Plots of PTVs for all patients. (b) Plots for nonoverlapped volume among the three PTVs.

Image of FIG. 4.
FIG. 4.

Comparison of the target dose parameters for three different plans: (a) DVHs of targets (PTVs) for the three plans for patient No. 3. Dose is normalized by the maximum value inside PTV. The dashed lines indicate the determination of prescribed isodose line from DVH curves. (b) Prescribed isodose line as a function of tumor volume for . (c) Comparison of the prescribed isodose line of the three plans for all the patients.

Image of FIG. 5.
FIG. 5.

Influence of the tumor size on the lung dose parameters and comparison of lung dose parameters for three different plans: (a) MLD as a function of tumor size for ; (b) V20 as a function of tumor size for ; (c) MLD of the three plans for all patients; and (d) V20 of the three plans for all patients.

Image of FIG. 6.
FIG. 6.

Influence of tumor size and location on the heart dose parameters and comparison of heart dose parameters for three different plans: (a) MHD for as a function of tumor size ; (b) MHD for as a function of tumor location (distance from tumor to heart); and (c) MHD for the three plans for each patient.

Image of FIG. 7.
FIG. 7.

Comparison of the spinal cord dose parameters for three different plans: (a) of the three plans for the 12 patients and (b) SCD of the three plans for the 12 patients.

Tables

Generic image for table
TABLE I.

Patient statistics. Abbreviation of target location in lung: U/L: upper/lower; R/L: right/left. Patients are listed in ascending order of target volume.

Generic image for table
TABLE II.

Target volume.

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/content/aapm/journal/medphys/36/6/10.1118/1.3129161
2009-05-18
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Image-guided respiratory-gated lung stereotactic body radiotherapy: Which target definition is optimal?
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/36/6/10.1118/1.3129161
10.1118/1.3129161
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