We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Radiological patterns of the posterior semicircular canal.
- Authors
Cisneros, Ana; Whyte, Jaime; Martínez, Claudio; Gracia-Tello, Borja; Whyte, Ana; Obón, Jesús; Crovetto, Rafael; Crovetto, Miguel
- Abstract
Objectives: The identification and definition of the radiological patterns of the posterior semicircular canal (PSC), with a view to obtain readily applicable conclusions. Design: The parietal morphology of the PSC has been studied by multi-slice helical computed tomography (Philips Brilliance 6). We have determined the distribution of the different types of bone cover of the PSC, taking some previously notified, standardised measurements of normality as reference. Results: 318 patients have been analysed (604 petrous bone) by CT and we have distinguished five different radiological patterns: type or normal, thick, thin, pneumatised and dehiscent. The first three patterns, normal, thick and thin, have in common the existence of a compact bone interposed between PSC and posterior fossa, being in the normal pattern has a thickness of between 0.9 and 2.5 mm (327 cases, 54.13 %), in the thick pattern is ≥2.6 mm (99 cases, 16.39 %) and in the thin pattern is ≤1.2 mm (158 cases, 26.15 %). The fourth pattern, pneumatised, is characterised by having retro labyrinthine cells between PSC and media fossa (19 cases, 3.14 %). Finally, a dehiscent pattern was observed in 2 cases (0.3 %). Conclusion: We describe five different radiological patterns: type or normal, thick, thin, pneumatised and dehiscent. The thin type (<0.5 mm or papyraceous type) and the dehiscent type would be subject to producing pathology, and in some cases the latter could be a consequence of the former.
- Subjects
RADIOLOGICAL research; SEMICIRCULAR canals; PARIETAL lobe; DEHISCENCE (Botany); LABYRINTHINE fluids; PHYSIOLOGY; ANATOMY
- Publication
Surgical & Radiologic Anatomy, 2014, Vol 36, Issue 2, p137
- ISSN
0930-1038
- Publication type
Article
- DOI
10.1007/s00276-013-1155-8