High-Resolution in situ Imaging of Cochlear Implant Electrode Arrays in Cat Temporal Bones Using Tuned Aperture Computed Tomography (TACT??)

2007 ◽  
Vol 28 (4) ◽  
pp. 435-443 ◽  
Author(s):  
Motomichi Sakata ◽  
Masato Hareyama ◽  
Thomas A. Heil ◽  
Miriam M. Henson ◽  
O W. Henson ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Cochlear Implant ◽  
Electrode Arrays ◽  
Temporal Bones ◽  
In Situ Imaging

scholarly journals Facial nerve anomalies in paediatric cochlear implant candidates: radiological evaluation

2016 ◽  
Vol 131 (1) ◽  
pp. 26-31 ◽  
Author(s):  
F B Palabiyik ◽  
K Hacikurt ◽  
Z Yazici
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Facial Nerve ◽  
Cochlear Implant ◽  
Inner Ear ◽  
Resonance Imaging ◽  
High Resolution Computed Tomography ◽  
Ear Anomalies

AbstractBackground:Pre-operative radiological identification of facial nerve anomalies can help prevent intra-operative facial nerve injury during cochlear implantation. This study aimed to evaluate the incidence and configuration of facial nerve anomalies and their concurrence with inner-ear anomalies in cochlear implant candidates.Methods:Inner-ear and concomitant facial nerve anomalies were evaluated by magnetic resonance imaging and temporal high-resolution computed tomography in 48 children with congenital sensorineural hearing loss who were cochlear implant candidates.Results:Inner-ear anomalies were present in 11 out of 48 patients (23 per cent) and concomitant facial nerve anomalies were present on 7 sides in 4 patients (7 per cent of the total). Facial nerve anomalies were accompanied by cochlear or vestibular malformation.Conclusion:Potential facial nerve abnormalities should always be considered in patients with inner-ear anomalies. Pre-operative facial nerve imaging can increase the surgeon's confidence to plan and perform cochlear implantation. Magnetic resonance imaging should be used to detect inner-ear anomalies; if these are identified, temporal high-resolution computed tomography should be used to evaluate the facial nerve.

Can Preoperative High Resolution Computed Tomography Be Rationalized in Adult Cochlear Implant Candidates?

2018 ◽  
Vol 39 (10) ◽  
pp. 1264-1270
Author(s):  
Peter Gaskell ◽  
Jameel Muzaffar ◽  
Steve Colley ◽  
Chris Coulson
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Cochlear Implant ◽  
High Resolution Computed Tomography

scholarly journals Anatomic verification of a novel method for precise intrascalar localization of cochlear implant electrodes in adult temporal bones using clinically available computed tomography

2010 ◽  
Vol 120 (11) ◽  
pp. 2277-2283 ◽  
Author(s):  
Theodore A. Schuman ◽  
Jack H. Noble ◽  
Charles G. Wright ◽  
George B. Wanna ◽  
Benoit Dawant ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cochlear Implant ◽  
Novel Method ◽  
Temporal Bones

High resolution in-situ imaging of reactive heterogeneous surfaces

1999 ◽  
Vol 44 (21-22) ◽  
pp. 3651-3657 ◽  
Author(s):  
L.F Garfias-Mesias ◽  
W.H Smyrl
Keyword(s):  
High Resolution ◽  
Heterogeneous Surfaces ◽  
In Situ Imaging

The Use of Cone-Beam Computed Tomography to Determine Cochlear Implant Electrode Position in Human Temporal Bones

2014 ◽  
Vol 35 (8) ◽  
pp. 1338-1344 ◽  
Author(s):  
Shakeel R. Saeed ◽  
David Selvadurai ◽  
Tim Beale ◽  
Nigel Biggs ◽  
Brendan Murray ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cochlear Implant ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Electrode Position ◽  
Temporal Bones

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.

Imaging Optimization of Temporal Bones With Cochlear Implant Using a High-resolution Cone Beam CT and the Corresponding Effective Dose

2014 ◽  
Vol 124 (6) ◽  
pp. 466-473 ◽  
Author(s):  
Jing Zou ◽  
Juha Koivisto ◽  
Jaakko Lähelmä ◽  
Antti Aarnisalo ◽  
Jan Wolff ◽  
...  
Keyword(s):  
High Resolution ◽  
Cochlear Implant ◽  
Effective Dose ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Temporal Bones
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