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Fig. 3 | BMC Cancer

Fig. 3

From: Basal cell adenocarcinoma of the nasopharyngeal minor salivary glands: a case report and review of the literature

Fig. 3

a, Planning target volume of the gross tumour volume and the high-risk clinical tumour volume. Axial, sagittal and coronal slices representative of this patient’s planning target volume (PTV) are presented. Red contour represents PTV of the gross tumour volume to 70.4 Gy, green contour represents PTV of the high-risk clinical tumour volume to 60 Gy, orange contour represents brain stem and purple contour represents spinal cord. b, Dose volume histogram. The dose volume histogram of this patient is presented. The maximum point dose of spinal cord and brain stem are well within the dose constraint. The prescribed dose encompasses at least 95% of the planning target volume (PTV). None of the PTV receives ≥110% of the prescribed dose

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