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Figure 4 | Radiation Oncology

Figure 4

From: Integrating respiratory-gated PET-based target volume delineation in liver SBRT planning, a pilot study

Figure 4

Examples of target volume delineation. a: Different target volumes obtained for a liver metastasis next to the diaphragm. The manual contouring leads to inaccurate evaluation of the PTV. CT scan in the upper part, non respiratory-gated PET in the middle, and co-registrated non respiratory-gated PET-CT in the lower part. CTV appears in dark blue, PTV in light blue, BITV in red and PTVg in magenta. b: Representative target volumes obtained for a liver metastasis (patient 6). The manual contouring leads to an increase in the PTV as compared to the PTVg. CT scan in the upper part, non respiratory-gated PET in the middle, and co-registrated non respiratory-gated PET-CT in the lower part. CTV appears in dark blue, PTV in light blue, BITV in red and PTVg in magenta.

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