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Automatic segmentation of the facial nerve and chorda tympani in pediatric CT scans

Fitsum A. Reda, Jack H. Noble, Alejandro Rivas, Theodore R. McRackan, Robert F. Labadie, Benoit M. Dawant
2011 Medical Physics (Lancaster)  
The goal of this work is to automatically segment the facial nerve and chorda tympani in pediatric CT scans.  ...  Conclusions: The results indicate that accurate segmentation of the facial nerve and chorda tympani in pediatric scans is achievable, thus suggesting that safe drilling trajectories can also be computed  ...  The content is solely the responsibility of the authors and does not necessarily represent the official views of these institutes and from the National Institute of Biomedical Imaging and Bioengineering  ... 
doi:10.1118/1.3634048 pmid:21992377 pmcid:PMC3208411 fatcat:7y5ckis6cnbrtjnornlnfmxgti

Minimally Invasive Image-Guided Cochlear Implantation for Pediatric Patients

Ramya Balachandran, Fitsum A. Reda, Jack H. Noble, Grégoire S. Blachon, Benoit M. Dawant, J. Michael Fitzpatrick, Robert F. Labadie
2014 Otolaryngology and head and neck surgery  
For patients with normal anatomy, the mean and standard deviation of the closest distance of the trajectory to facial nerve and chorda tympani were 1.1 ± 0.3 mm and 1.2 ± 0.5 mm, respectively.  ...  Three fiducial markers were bone-implanted surrounding the ear, and a CT scan was acquired. The CT scan was processed to identify the marker locations and critical structures of the temporal bone.  ...  Acknowledgments The project described was supported by Award Number R01DC010184 from the National Institute on Deafness and Other Communication Disorders.  ... 
doi:10.1177/0194599813519050 pmid:24449796 pmcid:PMC4431770 fatcat:xczdg5javja3pnktgbapnllzhe

Comparison of Cochlear Implant Relevant Anatomy in Children Versus Adults

Theodore R. McRackan, Fitsum A. Reda, Alejandro Rivas, Jack H. Noble, Mary S. Dietrich, Benoit M. Dawant, Robert F. Labadie
2012 Otology and Neurotology  
localizes and segments temporal bone anatomy (e.g., facial nerve, chorda tympani, external auditory canal [EAC], and cochlea).  ...  High-resolution computed tomographic scans of 24 pediatric patients (46 ears) and 20 adult patients (40 ears) were evaluated using software consisting of a model-based segmentation algorithm that automatically  ...  Automatic Segmentation of Anatomic Structures The ear canal, tympanic membrane, scala tympani, scala vestibuli, ossicles, facial nerve, chorda tympani, and the cochlea were automatically segmented in the  ... 
doi:10.1097/mao.0b013e318245cc9f pmid:22377644 pmcid:PMC3321365 fatcat:afwmacor2fhzzdoexftr6kqiau

Population Statistics Approach for Safety Assessment in Robotic Cochlear Implantation

Tom Williamson, Kate Gavaghan, Nicolas Gerber, Stefan Weder, Lukas Anschuetz, Franca Wagner, Christian Weisstanner, Georgios Mantokoudis, Marco Caversaccio, Stefan Weber
2017 Otology and Neurotology  
Based on the accuracy of a robotic system developed by the authors, the 15 effect of variation of system accuracy, precision and tunnel diameter examined with respect to the 16 potential treatable portion  ...  of the population. 17 Results 18 A facial recess diameter of 2.54±0.51 mm (n=74) was determined from a review of existing literature; 19 subsequent measurements on CT data revealed a facial recess diameter  ...  the drill and chorda tympani DChT and the shortest distance between the drill and the 312 facial nerve DFN.  ... 
doi:10.1097/mao.0000000000001357 pmid:28196000 fatcat:isbcxosqvzgzld3tez5znjirhm

Implantation of the Completely Ossified Cochlea

George B. Wanna, Matthew L. Carlson, Grégoire S. Blachon, Jack H. Noble, Benoit M. Dawant, Robert F. Labadie, Ramya Balachandran
2013 Otology and Neurotology  
Postoperative imaging confirmed two cochlear tunnels straddling the modiolus with adequate clearance of the facial nerve and internal carotid artery.  ...  Conclusions-Successful cochlear implantation in the setting of total scalar obliteration poses a significant challenge.  ...  Following CT acquisition, a mastoidectomy and facial recess was performed without exposing the mastoid segment of the facial nerve or chorda tympani.  ... 
doi:10.1097/mao.0b013e31827d8aa0 pmid:23370556 pmcid:PMC3600086 fatcat:x7ejsn2y7zhe5ifnqeqe7pmwli

ESHNR 2019 Book of Abstracts

Irene Christoffel
2019 Insights into Imaging  
It is a variation of the normal aspect of the trabecular bone in this region and pointed out as an important predictor of inferior alveolar nerve damage during third molar surgery.  ...  Methods and Materials: Methods the 18 Patients were studied by head and neck MR with a diagnosis of MVS in the 2018-2019 period Results: The suspected diagnosis of MVs was based on the results of MRI or  ...  The equivalent scores for CT were 50/50 (facial nerve) and 40/50 (chorda tympani) with mean "visibility scores" of 2.88 (facial nerve) and 2.26 (chorda tympani).  ... 
doi:10.1186/s13244-019-0779-6 pmid:31576431 pmcid:PMC6773793 fatcat:5qig6xloqng37awn5yr7yfe4qa

Surgery of the ear and the lateral skull base: pitfalls and complications

Bernhard Schick, Julia Dlugaiczyk
2013 GMS Current Topics in Otorhinolaryngology  
Surgery of the ear and the lateral skull base is a fascinating, yet challenging field in otorhinolaryngology.  ...  Special emphasis is laid on functional aspects, such as hearing, balance and facial nerve function.  ...  facial nerve palsy, chorda tympani symptoms and inflammatory complications [143] , [144] .  ... 
doi:10.3205/cto000097 pmid:24403973 pmcid:PMC3884540 fatcat:j7gzcoscrzbzxg5o75crdddfyq

Radiologic anatomy of the round window relevant to cochlear implantation and inner ear drug delivery

Peter L. Nguy, Sheela Saidha, Ann Jay, H. Jeffrey Kim, Michael Hoa
2020 World Journal of Otorhinolaryngology-Head and Neck Surgery  
The membrane's position relative to plane of the facial nerve through facial recess was (14.7 ± 5.2)° posterior from a reference line drawn through facial recess to carotid canal.  ...  To determine anatomic relationships and variation of the round window membrane to bony surgical landmarks on computed tomography.  ...  When a single image did not visualize the mastoid segment of the facial nerve (FN), the RWM, and the carotid artery (CA), the CT scan data were reformatted to visualize all landmarks on one slice using  ... 
doi:10.1016/j.wjorl.2018.12.003 pmid:33474538 pmcid:PMC7801246 fatcat:4aumhbd67bga5jrdotl2tcczhe

Robot-assisted three-dimensional registration for cochlear implant surgery using a common-path swept-source optical coherence tomography probe

Saumya S. Gurbani, Paul Wilkening, Mingtao Zhao, Berk Gonenc, Gyeong Woo Cheon, Iulian I. Iordachita, Wade Chien, Russell H. Taylor, John K. Niparko, Jin U. Kang
2014 Journal of Biomedical Optics  
The system is tested on a dry fixed ex vivo human temporal bone, and we demonstrate the feasibility of a 3-D OCT registration of the cochlea to accurately describe the spatial and angular profiles of the  ...  canal formed by the scala tympani into the first cochlear turn.  ...  Acknowledgments The work reported here was funded in part by research support from Cochlear Americas and in part by Johns Hopkins University Internal Funds.  ... 
doi:10.1117/1.jbo.19.5.057004 pmid:24805810 fatcat:4pnaonujlvblfh7uzuyuhswz6i

Front Matter: Volume 7962

Proceedings of SPIE, Benoit M. Dawant, David R. Haynor
2011 Medical Imaging 2011: Image Processing Paper Numbering: Proceedings of SPIE follow an e-First publication model, with papers published first online and then in print and on CD-ROM.  ...  The last two digits indicate publication order within the volume using a Base 36 numbering system employing both numerals and letters.  ...  Likar, Univ. of Ljubljana (Slovenia) POSTER SESSION: SEGMENTATION 7962 2B Model-based segmentation of the facial nerve and chorda tympani in pediatric CT scans [7962-82] F. A. Reda, J. H.  ... 
doi:10.1117/12.895486 fatcat:k5eaur5cq5aevpg2i2dgqrcsbu

Front Matter: Volume 6914

Proceedings of SPIE, Joseph M. Reinhardt, Josien P. W. Pluim
2008 Medical Imaging 2008: Image Processing Paper Numbering: Proceedings of SPIE follow an e-First publication model, with papers published first online and then in print and on CD-ROM.  ...  The last two digits indicate publication order within the volume using a Base 36 numbering system employing both numerals and letters.  ...  Fan, The Univ. of North Carolina at Charlotte (USA) 6914 0P Automatic segmentation of the facial nerve and chorda tympani using image registration and statistical priors [6914-24] J. H.  ... 
doi:10.1117/12.798638 dblp:conf/miip/X08 fatcat:7s2ttmya4bcxjeo7gvpcik7egu

Abstract Selection

1992 Journal of Laryngology and Otology  
Selection The Journal is again pleased to thank the Editors, parent associations and publishers of the following journals for so kindly allowing a selection of their abstracts to be published in the past  ...  Acta Neurologica Scandinavica (Munksgaard Development of early (I-III) and late (III-V) brainstem conduction time (BCT) in the brainstem auditory evoked responses was examined and compared in 178 appropriate-for-gestationalage  ...  ), tympanic nerve (four patients), and chorda tympani nerve (one patient).  ... 
doi:10.1017/s0022215100118687 fatcat:p2xnfjrxobhlfl75d6vdwbmirm

The role of the mastoid in middle ear pressure regulation

Michael Gaihede
2016 Journal of Laryngology and Otology  
It is prudent to do a complete canal-wall-down (CWD) mastoidectomy with adequate lowering of the facial ridge and clearance of all disease covering the sinus tympani and vertical segment of the facial  ...  Indeed, the sinus tympani was invaded in 73.7% of our cases and the facial recess in 89.5% of cases.  ...  Conclusion Our new CT-based categorization, which was based on the presence or absence of a bony modiolus in the cochlea and the diameters of IAC and BCNC, was effective in predicting CI outcomes of children  ... 
doi:10.1017/s0022215116002838 fatcat:kurkpq3o7zehzm5kxqcx4c777u

Ear, Nose and Throat [chapter]

K. P. Gibbin
1991 A Practical Guide to Medicine and the Law  
In the middle ear, it also supplies secretomotor fi bres to the submandibular and sublingual salivary glands, and taste fi bres to the anterior two-thirds of the tongue via the chorda tympani.  ...  A high-resolution CT scan of the temporal bone reveals multiple fracture lines in most cases, and may show bony fragment impingement on the facial canal.  ... 
doi:10.1007/978-1-4471-1863-3_7 fatcat:v3fisvcatvhjzj5budlbhx62dq

Abstracts from the Thirty-fourth Annual Meeting of the Association for Chemoreception Sciences

2013 Chemical Senses  
Where in the brain does this modulation occur, and what are the neurochemical underpinnings of this process, remains unknown.  ...  I will describe experiments that have led to the identification of aggression pheromones in this species, and insights into the chemosensory "logic" by which this innate behavior is controlled.  ...  We explored HMGB-1 expression in the normal peripheral taste system and after chorda tympani nerve (CT) sectioning.  ... 
doi:10.1093/chemse/bjs091 pmid:23300212 fatcat:or55rqfvszfqdmmdlusi5jfrbi
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