scholarly journals Anatomical study between the correlation of the arcuate eminence and the superior semicircular canal

2021 ◽  
Author(s):  
A. García-Barrios ◽  
A. I. Cisneros ◽  
J. Obon ◽  
R. Crovetto ◽  
J. Benito ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cancellous Bone ◽  
Semicircular Canal ◽  
Direct Relationship ◽  
Anatomical Study ◽  
Superior Semicircular Canal ◽  
Anatomical Correlation ◽  
Anatomical Relationship ◽  
Temporal Bones

Abstract Objective To study the anatomical correlation between the arcuate eminence and the superior semicircular canal. Material and methods A study of the height of the arcuate eminence was carried out in 295 temporal bones. In addition, 30 temporals with different heights of the arcuate eminence (10 flat, 10 prominent and 10 very prominent) were randomly selected and radiological tests were performed by computed tomography (Pöschl projection) and subsequent dissection by milling until the apex of the superior semicircular canal was found, establishing, with both methods, the anatomical relationship with the arcuate eminence. Results The arcuate eminence was classified as: smooth, when there was no relief (1.7%); flat, measured less than 1 mm (20.3%), prominent, measured between 1 and 2 mm, in (62%), and very prominent, measured above 2 mm (12.6%). The tomographic study (CT) and its subsequent dissection by bone milling showed a direct relationship between the arcuate eminence and the semicircular canal only when it was flat, while the rest of the types corresponded to the presence of pneumatized peri-labyrinthine cells and/or cancellous bone without a direct anatomical relationship with the apex of the superior semicircular canal. Conclusion The correlation between the arcuate eminence and the superior semicircular canal is direct only when it is flat (1 mm), being related to peri-labyrinthine cells and/or cancellous bone when the arcuate eminence is prominent or very prominent.

Anatomy of the Transarcuate Approach to the Petrous Apex

2008 ◽  
Vol 139 (2_suppl) ◽  
pp. P98-P98
Author(s):  
Alice D Lee ◽  
Sanaz Hamidi ◽  
Hamid R Djalilian
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Semicircular Canal ◽  
Petrous Apex ◽  
Minimal Risk ◽  
High Resolution Computed Tomography ◽  
Superior Semicircular Canal ◽  
The Mean ◽  
Temporal Bones ◽  
Anterior Posterior

Problem The petrous apex is considered to be one of the most difficult areas of the temporal bone to approach surgically. We present data describing the dimensions of a transarcuate approach to the petrous apex, as measured on high resolution computed tomography. Methods Measurements of the mean dimensions and ranges through the crura of the superior semicircular canal were made. The measurements were obtained from high-resolution computed tomography images of 30 temporal bones in 19 consecutively presenting patients with a pneumatized posterior petrous apex cell tract on CT. Measurements were obtained with the use of the standard PACS (picture archiving and communication system) software. Results The mean anterior-posterior space in the superior semicircular canals without transcrural pneumatization was 4.96±0.39 mm. The mean superior- inferior dimension was 4.98±0.48 mm. The same measurements in canals with pneumatized intercrural tracts were 5.17±0.51 mm and 5.11±0.62 mm respectively. The mean anterior-posterior distance and superior-inferior distance of the intercrural air tracts themselves were 2.09±0.57 and 2.01±0.45mm. There was a statistically significant difference in the anterior-posterior size between the pneumatized and non-pneumatized canals but not in the superior-inferior distance. Conclusion Pneumatized bones demonstrate a slight increase in the subarcuate dimensions as compared to non-pneumatized bones. The transarcuate approach is a viable one for drainage and biopsy of the petrous apex. Significance Our study demonstrates that the transarcuate approach is anatomically possible for drainage of the petrous apex with minimal risk to the superior semicircular canal. This would be especially useful for the drainage of cholesterol granulomas of the petrous apex or biopsy in this area.

scholarly journals Assessment of the Anatomical Relationship Between the Arcuate Eminence and Superior Semicircular Canal by Computed Tomography

2007 ◽  
Vol 47 (8) ◽  
pp. 335-340 ◽  
Author(s):  
Yoshinobu SEO ◽  
Tamio ITO ◽  
Takehiko SASAKI ◽  
Jyoji NAKAGAWARA ◽  
Hirohiko NAKAMURA
Keyword(s):  
Computed Tomography ◽  
Semicircular Canal ◽  
Superior Semicircular Canal ◽  
Anatomical Relationship

Anatomical Characteristics of Facial Nerve and Cochlea Interaction

2017 ◽  
Vol 22 (1) ◽  
pp. 41-49 ◽  
Author(s):  
Nadine Schart-Morén ◽  
Sune Larsson ◽  
Helge Rask-Andersen ◽  
Hao Li
Keyword(s):  
Facial Nerve ◽  
Semicircular Canal ◽  
Otic Capsule ◽  
Micro Ct ◽  
Superior Semicircular Canal Dehiscence ◽  
Topographic Anatomy ◽  
3D Rendering ◽  
Superior Semicircular Canal ◽  
Archival Collection ◽  
Temporal Bones

Objective: The aim was to study the relationship between the labyrinthine portion (LP) of the facial canal and the cochlea in human inner ear molds and temporal bones using micro-CT and 3D rendering. A reduced cochlea-facial distance may spread electric currents from the cochlear implant to the LP and cause facial nerve stimulation. Influencing factors may be the topographic anatomy and otic capsule properties. Methods: An archival collection of human temporal bones underwent micro-CT and 3D reconstruction. In addition, cochlea-facial distance was assessed in silicone and polyester resin molds, and the association between the LP and upper basal turn of the cochlea was analyzed. Results: Local thinning of the otic capsule and local anatomy may explain the development of cochlea-facial dehiscence, which was found in 1.4%. A reduced cochlea-facial distance was noted in 1 bone with a superior semicircular canal dehiscence but not in bones with superior semicircular canal “blue line.” The otic capsule often impinged upon the LP and caused narrowing. Conclusion: Micro-CT with 3D rendering offers new possibilities to study the topographic anatomy of the human temporal bone. The varied shape of the cross-section of the LP could often be explained by an “intruding” cochlea.

Multislice Computed Tomography Overestimates Superior Semicircular Canal Dehiscence Syndrome

2013 ◽  
Vol 122 (10) ◽  
pp. 625-631 ◽  
Author(s):  
Massimo Re ◽  
Federico Maria Gioacchini ◽  
Ugo Salvolini ◽  
Anna Maria Totaro ◽  
Andrea Santarelli ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Semicircular Canal ◽  
Multislice Computed Tomography ◽  
Superior Semicircular Canal Dehiscence ◽  
Superior Semicircular Canal ◽  
Canal Dehiscence

Anatomo-radiological study of the superior semicircular canal dehiscence of 37 cadaver temporal bones

2012 ◽  
Vol 35 (1) ◽  
pp. 55-59 ◽  
Author(s):  
Michel Mondina ◽  
Damien Bonnard ◽  
Xavier Barreau ◽  
Vincent Darrouzet ◽  
Valérie Franco-Vidal
Keyword(s):  
Semicircular Canal ◽  
Superior Semicircular Canal Dehiscence ◽  
Radiological Study ◽  
Superior Semicircular Canal ◽  
Temporal Bones ◽  
Canal Dehiscence

scholarly journals Use of Cone Beam Computed Tomography in the Diagnosis of Superior Semicircular Canal Dehiscence

2014 ◽  
Vol 4 ◽  
pp. 49 ◽  
Author(s):  
Ilson Sepúlveda ◽  
Thomas Schmidt ◽  
Enrique Platín
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Semicircular Canal ◽  
Imaging Modality ◽  
Three Dimensional ◽  
Cone Beam ◽  
Unknown Etiology ◽  
Superior Semicircular Canal Dehiscence ◽  
Superior Semicircular Canal ◽  
Canal Dehiscence

Superior semicircular canal dehiscence is a relatively new syndrome in the field of otology. It is of unknown etiology presenting with a variety of vestibular and auditory symptoms and radiologic findings play a crucial role in its diagnosis. Cone beam computed tomography has been shown to be a powerful tool in the field of otolaryngology. It is a three dimensional technique that uses lower radiation resulting in fewer artifacts and offers higher resolution when compared with multi-slice computed tomography. It is considered to be an excellent imaging modality for radiological exploration of the ear.

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