Fig. 4
From: Small nuclei identification with a hemispherical brain PET
Sagittal views of the brainstem using Vrain (a), whole-body PET (b), and MRI (c). The right expanded images show the axial images at the level (dashed line in the sagittal image), which is 4 mm above the isthmus (red arrow). The midbrain part of the raphe nucleus (bold arrows) is depicted ventral to the inferior colliculus (dashed arrows) using Vrain (a), and the centre of the crossbar is placed at the right component of the raphe nucleus in the midbrain. The pontine part of the raphe nucleus is also visualised on sagittal view (black arrow) (a) at 2 mm below the isthmus (red arrow). The raphe nucleus is not visualised on the whole-body PET (b). The SUV is indicated by the colour scale