title: [The occipital sinus: a radioanatomic study].
abstract: BACKGROUND
  The aim of this study was to assess the presence of an occipital sinus in both children and adults, and to detail its main associated anatomical characteristics.
  
  
  METHODS
  One hundred of patients' MRI (3D T1 EG) between 0 and 86 years old were studied, in sagittal and axial sections, with the software DxMM. Occipital sinus length, perimeter, and cerebellar falx length measurements were performed with the software's tools.
  
  
  RESULTS
  Forty-three percent of patients had an occipital sinus (average perimeter was 3.02 mm, average length was 19.85 mm), and 23.26% of these patients had a cerebellar falx, 30.23% of these patients had one vein or more draining into the occipital sinus. Sixty-two percent of children had an occipital sinus (average perimeter was 2.87 mm, average length was 21.63 mm), and 29.03% of them had a cerebellar falx. Twenty-four percent of adults had an occipital sinus (average perimeter was 3.4mm, average length was 15.28 mm), and 8.33% of them had a cerebellar falx.
  
  
  CONCLUSIONS
  This work highlights a link between the age and the occipital sinus existence. The perimeter of this sinus seems to be superior for adults, but its length seems to be superior for children. A cerebellar falx with the occipital sinus was found more frequently for children.
authors: Laboratoire d'anatomie et d'organogenèse, faculté de médecine, 3, rue des Louvels, 80036 Amiens cedex 1, France. Electronic address: melimelody.gd@gmail.com.
authors: M
authors: M
authors: Gaumont-Darcissac
authors: Laboratoire d'anatomie et d'organogenèse, faculté de médecine, 3, rue des Louvels, 80036 Amiens cedex 1, France.
authors: L
authors: L
authors: Viart
authors: Laboratoire d'anatomie et d'organogenèse, faculté de médecine, 3, rue des Louvels, 80036 Amiens cedex 1, France.
authors: P
authors: P
authors: Foulon
authors: Laboratoire d'anatomie et d'organogenèse, faculté de médecine, 3, rue des Louvels, 80036 Amiens cedex 1, France.
authors: D
authors: D
authors: Le Gars
authors: Laboratoire d'anatomie et d'organogenèse, faculté de médecine, 3, rue des Louvels, 80036 Amiens cedex 1, France.
authors: E
authors: E
authors: Havet
authors: Laboratoire d'anatomie et d'organogenèse, faculté de médecine, 3, rue des Louvels, 80036 Amiens cedex 1, France.
authors: J
authors: J
authors: Peltier
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D003392:Cranial Sinuses / Q000033:anatomy & histology*; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D055815:Young Adult
keywords: Anatomie; Anatomy; IRM; MRI; Occipital sinus; Sinus occipital