K Suprasanna1, S R Ravikiran2, Ashvini Kumar3, Channabasappa Chavadi4, Sanyal Pulastya5. 1. Assistant Professor, Department of Radiology, Kasturba Medical College , Attavar, Mangalore, Manipal University, India . 2. Associate Professor, Department of Pediatrics, Kasturba Medical College , Mangalore, Manipal University, India . 3. Professor and HOD, Department of Radiology, Kasturba Medical College , Mangalore, Manipal University, India . 4. Assistant Professor, Department of Radiology, Kasturba Medical College , Mangalore, Manipal University, India . 5. Resident, Department of Radiology, Kasturba Medical College , Mangalore, Manipal University, India .
Abstract
PURPOSE: To evaluate thickness, location and orientation of optic strut and anterior clinoid process and variations in paraclinoid region, solely based on multidetector computed tomography (MDCT) images with multiplanar (MPR) and 3 dimensional (3D) reconstructions, among Indian population. MATERIALS AND METHODS: Ninety five CT scans of head and paranasal sinuses patients were retrospectively evaluated with MPR and 3D reconstructions to assess optic strut thickness, angle and location, variations like pneumatisation, carotico-clinoid foramen and inter-clinoid osseous ridge. RESULTS: Mean optic strut thickness was 3.64mm (±0.64), optic strut angle was 42.67 (±6.16) degrees. Mean width and length of anterior clinoid process were 10.65mm (±0.79) and 11.20mm (±0.95) respectively. Optic strut attachment to sphenoid body was predominantly sulcal as in 52 cases (54.74%) and was most frequently attached to anterior 2/5(th) of anterior clinoid process, seen in 93 sides (48.95%). Pneumatisation of optic strut occurred in 23 sides. Carotico-clinoid foramen was observed in 42 cases (22.11%), complete foramen in 10 cases (5.26%), incomplete foramen in 24 cases (12.63%) and contact type in 8 cases (4.21%). Inter-clinoid osseous bridge was seen unilaterally in 4 cases. CONCLUSION: The study assesses morphometric features and anatomical variations of paraclinoid region using MDCT 3D and multiplanar reconstructions in Indian population.
PURPOSE: To evaluate thickness, location and orientation of optic strut and anterior clinoid process and variations in paraclinoid region, solely based on multidetector computed tomography (MDCT) images with multiplanar (MPR) and 3 dimensional (3D) reconstructions, among Indian population. MATERIALS AND METHODS: Ninety five CT scans of head and paranasal sinusespatients were retrospectively evaluated with MPR and 3D reconstructions to assess optic strut thickness, angle and location, variations like pneumatisation, carotico-clinoid foramen and inter-clinoid osseous ridge. RESULTS: Mean optic strut thickness was 3.64mm (±0.64), optic strut angle was 42.67 (±6.16) degrees. Mean width and length of anterior clinoid process were 10.65mm (±0.79) and 11.20mm (±0.95) respectively. Optic strut attachment to sphenoid body was predominantly sulcal as in 52 cases (54.74%) and was most frequently attached to anterior 2/5(th) of anterior clinoid process, seen in 93 sides (48.95%). Pneumatisation of optic strut occurred in 23 sides. Carotico-clinoid foramen was observed in 42 cases (22.11%), complete foramen in 10 cases (5.26%), incomplete foramen in 24 cases (12.63%) and contact type in 8 cases (4.21%). Inter-clinoid osseous bridge was seen unilaterally in 4 cases. CONCLUSION: The study assesses morphometric features and anatomical variations of paraclinoid region using MDCT 3D and multiplanar reconstructions in Indian population.
Authors: Martin J Citardi; Ryan P Gallivan; Pete S Batra; Calvin R Maurer; Torsten Rohlfing; Hwan-Jung Roh; Donald C Lanza Journal: Am J Rhinol Date: 2004 May-Jun