Circling behavior in theEcl mouse is caused by lateral semicircular canal defects

2003 ◽  
Vol 468 (4) ◽  
pp. 587-595 ◽  
Author(s):  
Kim Cryns ◽  
Arjan M. Van Alphen ◽  
Michiel P. Van Spaendonck ◽  
Paul H. Van De Heyning ◽  
Jean-Pierre Timmermans ◽  
...  
Keyword(s):  
Semicircular Canal ◽  
Lateral Semicircular Canal ◽  
Circling Behavior

scholarly journals Comparative Study of Preoperative Radiological Findings with Intraoperative Surgical Findings in Squamosal Type of Chronic Otitis Media

2021 ◽  
Vol 10 (25) ◽  
pp. 1862-1865
Author(s):  
Sanjana Pradeep ◽  
Swaroop Dev ◽  
Jyothi Swarup Raju ◽  
Shravya Pasunuti
Keyword(s):  
Temporal Bone ◽  
Otitis Media ◽  
Semicircular Canal ◽  
Chronic Otitis Media ◽  
Sigmoid Sinus ◽  
Lateral Semicircular Canal ◽  
High Resolution Computed Tomography ◽  
Tissue Mass ◽  
Hrct Temporal Bone ◽  
A Prospective Study

BACKGROUND Chronic otitis media (COM) of squamosal type is associated with cholestatoma with potential complications. Clinical examination and high resolution computed tomography (HRCT) scans are necessary to assess the disease site and extension. The purpose of the study was to compare the preoperative HRCT findings with the intraoperative surgical findings in squamosal type of chronic otitis media as well as various parameters in HRCT temporal bone and intraoperative findings. METHODS A prospective study was conducted on 30 patients aged between 18 and 60 years of both the genders who presented with chronic otitis media squamosal type, for a period of 22 months who attended the outpatient department of ENT. RESULTS HRCT findings and intraoperative findings were compared and results were analysed. Facial canal erosion (P - 0.0031), tegmen plate erosion (P - 0.0001), sigmoid sinus plate erosion (P - 0.002) were found to be statistically significant. Lateral semicircular canal fistula (P - 0.36) and ossicular status malleus (P - 1.000), incus (P - 0.949), stapes suprastructure (P - 0.984), and stapes footplate erosion (P - 0.977) were found to be statistically insignificant. CONCLUSIONS In our study, HRCT imaging for COM squamosal type, accurately depicted the soft tissue mass, erosion of tegmen plate, sigmoid sinus plate, scutum, lateral semicircular canal fistula, incus and suprastructure of stapes erosion and the same were found intraoperatively as well. Our study showed good comparison between the preoperative HRCT scans and the surgical findings in cholesteatoma cases. HRCT is confirmed to be valuable in the diagnosis and in guiding the surgical management of cholesteatoma. KEY WORDS Chronic Otitis Media, Cholesteatoma, HRCT Temporal Bone, Modified Radical Mastoidectomy

scholarly journals A test of the lateral semicircular canal correlation to head posture, diet and other biological traits in “ungulate” mammals

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
J. Benoit ◽  
L. J. Legendre ◽  
A. A. Farke ◽  
J. M. Neenan ◽  
B. Mennecart ◽  
...  
Keyword(s):  
Semicircular Canal ◽  
Ct Scanning ◽  
Biological Traits ◽  
Large Sample Size ◽  
Strongly Correlated ◽  
Lateral Semicircular Canal ◽  
Extinct Species ◽  
Head Posture ◽  
Bony Labyrinth ◽  
Phylogenetic Regression

Abstract For over a century, researchers have assumed that the plane of the lateral semicircular canal of the inner ear lies parallel to the horizon when the head is at rest, and used this assumption to reconstruct head posture in extinct species. Although this hypothesis has been repeatedly questioned, it has never been tested on a large sample size and at a broad taxonomic scale in mammals. This study presents a comprehensive test of this hypothesis in over one hundred “ungulate” species. Using CT scanning and manual segmentation, the orientation of the skull was reconstructed as if the lateral semicircular canal of the bony labyrinth was aligned horizontally. This reconstructed cranial orientation was statistically compared to the actual head posture of the corresponding species using a dataset of 10,000 photographs and phylogenetic regression analysis. A statistically significant correlation between the reconstructed cranial orientation and head posture is found, although the plane of the lateral semicircular canal departs significantly from horizontal. We thus caution against the use of the lateral semicircular canal as a proxy to infer precisely the horizontal plane on dry skulls and in extinct species. Diet (browsing or grazing) and head-butting behaviour are significantly correlated to the orientation of the lateral semicircular canal, but not to the actual head posture. Head posture and the orientation of the lateral semicircular canal are both strongly correlated with phylogenetic history.

scholarly journals Isolated lateral semicircular canal aplasia: Functional consequences

2016 ◽  
Vol 133 (3) ◽  
pp. 199-201 ◽  
Author(s):  
G. Michel ◽  
F. Espitalier ◽  
A.-S. Delemazure ◽  
P. Bordure
Keyword(s):  
Semicircular Canal ◽  
Lateral Semicircular Canal ◽  
Functional Consequences

scholarly journals Otopathology Findings in Otosclerosis With Lateral Semicircular Canal Fenestration

2019 ◽  
Vol 4 (4) ◽  
pp. 425-428
Author(s):  
Nicholas A. Dewyer ◽  
John J. Rosowski ◽  
Joseph B. Nadol ◽  
Alicia M. Quesnel
Keyword(s):  
Semicircular Canal ◽  
Lateral Semicircular Canal

scholarly journals Lateral semicircular canal osteoma presenting as chronic postaural fistula

2018 ◽  
pp. bcr-2017-223794
Author(s):  
Charn Gill ◽  
Jameel Muzaffar ◽  
Raghu Sampath Kumar ◽  
Richard Irving
Keyword(s):  
Semicircular Canal ◽  
Lateral Semicircular Canal

Malformations of the lateral semicircular canal correlated with data from the audiogram

2019 ◽  
Vol 276 (4) ◽  
pp. 1029-1034 ◽  
Author(s):  
Aina Venkatasamy ◽  
Daphné Le Foll ◽  
Carine Eyermann ◽  
Hella Vuong ◽  
Dominique Rohmer ◽  
...  
Keyword(s):  
Semicircular Canal ◽  
Lateral Semicircular Canal

The incidence of tympanogenic labyrinthitis ossificans

2014 ◽  
Vol 128 (7) ◽  
pp. 618-620 ◽  
Author(s):  
H-Y Lin ◽  
Y-K Fan ◽  
K-C Wu ◽  
M-T Shu ◽  
C-C Yang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Head And Neck Cancer ◽  
Cochlear Implants ◽  
Semicircular Canal ◽  
Lateral Semicircular Canal ◽  
Posterior Semicircular Canal ◽  
High Resolution Computed Tomography ◽  
Labyrinthitis Ossificans ◽  
Computed Tomography Scans ◽  
History Of

AbstractObjective:To estimate the incidence of tympanogenic labyrinthitis ossificans.Methods:The records of patients treated with mastoidectomy for various tympanogenic aetiologies from January 2007 to December 2011 were retrospectively reviewed. Patients whose high-resolution computed tomography scans showed evidence of labyrinthine calcification of the temporal bone were enrolled. Patients with a history of head and neck cancer, meningitis, and otosclerosis, and patients with cochlear implants, were excluded from this study.Results:A total of 195 patients were enrolled in this study; 4 of the patients presented with calcification in the inner ear. Therefore, the incidence of tympanogenic labyrinthitis ossification was 2 per cent. The computed tomography findings revealed: (1) cochlear calcifications of the basal and middle turn in two patients; and (2) vestibular, superior semicircular canal, posterior semicircular canal and lateral semicircular canal calcification in one, four, three and two patients, respectively.Conclusion:The incidence of tympanogenic labyrinthitis ossification in patients who had undergone a mastoidectomy was 2 per cent.

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