title: How to perform 3D reconstruction of skull base tumours.
abstract: The surgical management of skull base lesions is difficult due to the complex anatomy of the region and the intimate relations between the lesion and adjacent nerves and vessels. Minimally invasive approaches are increasingly used in skull base surgery to ensure an optimal functional prognosis. Three-dimensional (3D) computed tomography (CT) reconstruction facilitates surgical planning by visualizing the anatomical relations of the lesions in all planes (arteries, veins, nerves, inner ear) and simulation of the surgical approach in the operating position. Helical CT angiography is performed with optimal timing of the injection in terms of tumour and vessel contrast enhancement. 3D definition of each structure is based on colour coding by automatic thresholding (bone, vessels) or manual segmentation on each slice (tumour, nerves, inner ear). Imaging is generally presented in 3 dimensions (superior, coronal, sagittal) with simulation of the surgical procedure (5 to 6 reconstructions in the operating position at different depths).
authors.affiliation: CHRU de Lille, Service d'Otologie et d'Otoneurologie, 59037 Lille cedex, France.
authors.forename: N-X
authors.initials: NX
authors.lastname: Bonne
authors.affiliation: CHRU de Lille, Service de Radiologie, 59037 Lille cedex, France.
authors.forename: F
authors.initials: F
authors.lastname: Dubrulle
authors.affiliation: CHRU de Lille, Service d'Otologie et d'Otoneurologie, 59037 Lille cedex, France.
authors.forename: M
authors.initials: M
authors.lastname: Risoud
authors.affiliation: CHRU de Lille, Service d'Otologie et d'Otoneurologie, 59037 Lille cedex, France. Electronic address: cvincent@chru-lille.fr.
authors.forename: C
authors.initials: C
authors.lastname: Vincent
mesh_terms: D000792:Angiography / Q000379:methods; D003287:Contrast Media; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional / Q000379:methods; D019635:Neurosurgical Procedures / Q000379:methods; D011300:Preoperative Care; D011379:Prognosis; D019291:Skull Base / Q000000981:diagnostic imaging*; D019292:Skull Base Neoplasms / Q000000981:diagnostic imaging*; D036542:Tomography, Spiral Computed / Q000379:methods
chemical_list: D003287:Contrast Media
keywords: 3D; Imaging; Reconstruction; Skull base