Contribution of 18F-Fluoro-ethyl-tyrosine Positron Emission Tomography to Target Volume Delineation in Stereotactic Radiotherapy of Malignant Cranial Base Tumours: First Clinical Experience
Figure 1
A 68-year-old male patient (patient no. 3) with a recurrent esthesioneuroblastoma and infiltration of the anterior skull base and frontal lobe. Parts of the GTVMRI/CT showing equivocal hyperintensity represent cystoid scar formation, which is not enhanced in PET. MRI failed to detect the infiltration of the left orbit. The GTVMRI/CT is delineated in red and the GTVPET in green. The GTVcomposite is lined in magenta and the reduced GTVboost in turquoise. The depth of infiltration of the frontal lobe is demonstrated in equal size by both MRI and PET in this case.
