Fig. 11.1 MRI study in a 39-year-old woman. MRI study without contrast-medium administration: (a) coronal spin-echo T1-weighted (T1WI), (b) coronal turbo-spin-echo T2-weighted (T2WI) and (c) coronal gradient-echo T2* sequences. MRI…
Fig. 3.1 MRI after gadolinium. Different tumors should be approached with different approaches, considering their different biological features and paths of growth. In (a, b) (coronal and axial views), the…
Fig. 22.1 MR imaging of a planum sphenoidale meningioma. (a) Axial T1-weighted contrast-enhanced image. (b) Coronal T1-weighted contrast-enhanced image. (c) Sagittal T2-weighted image showing perifocal edema (Created by H.W. Schroeder…
Fig. 21.1 T1-weighted MR images with gadolinium contrast enhancement showing a planum sphenoidale meningioma. Preoperative coronal (a) and sagittal (b) scans; postoperative coronal (c) and sagittal (d) scans In T1-weighted…
Fig. 12.1 MRI of a 52-year-old man with a visual loss and panhypopituitarism with a typical retrochiasmal craniopharyngioma. He underwent uneventful endonasal endoscopic gross total tumor resection. He is currently…
Fig. 16.1 (a) Arachnoid cyst of the middle fossa. Note the inner layer bulging medially behind the carotid artery. (b) Same patient as shown in (a), coronal view, where a…
Fig. 25.1 (a) Sagittal and (b) axial preoperative MRI scans showing an invasive extradural sellar chordoma extending to the clivus. This latter T2-weighted image shows the typical inhomogeneous hyperintensity known…
Fig. 27.1 Patient positioning in a recumbent and slight Trendelenburg position (20°), with the head fixed in a Mayfield head-holder Fig. 27.2 Perioperative photos showing endoscopic view of peg drilling…
Fig. 13.1 Schematic drawing showing the mammillary body angle (MBA); MBA is the angle formed by the intersection of a plane tangential to the base of 1 of the mammillary…
Fig. 7.1 The holding arm with endoscope. The arm is positioned arched out of the way from the surgical field, in order not to interfere with the surgeon’s movement A…
