scholarly journals The OpenEar library of 3D models of the human temporal bone based on computed tomography and micro-slicing

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Daniel Sieber ◽  
Peter Erfurt ◽  
Samuel John ◽  
Gabriel Ribeiro Dos Santos ◽  
Daniel Schurzig ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Temporal Bone ◽  
3D Models ◽  
Human Temporal Bone ◽  
Micro Slicing

Rapid-prototyped temporal bone and inner-ear models replicated by adjusting computed tomography thresholds

2007 ◽  
Vol 121 (11) ◽  
pp. 1025-1028 ◽  
Author(s):  
M Suzuki ◽  
A Hagiwara ◽  
Y Ogawa ◽  
H Ono
Keyword(s):  
Computed Tomography ◽  
Inner Ear ◽  
Temporal Bone ◽  
Selective Laser Sintering ◽  
Three Dimensional ◽  
Threshold Value ◽  
Surgical Instruments ◽  
Dimensional Structure ◽  
Three Dimensional Model ◽  
Human Temporal Bone

AbstractPurpose:This study aimed to investigate the validity of adjusting computed tomography thresholds in order to replicate a temporal bone model suitable for dissection training and education.Materials and methods:A simulated three-dimensional model of a human temporal bone was prototyped using selective laser sintering. The powder layers were laser-fused, based on detailed computed tomography data, and accumulated to create a three-dimensional structure. The computed tomography threshold value of the stapes was modified on standard triangular language file in order to replicate the stapes. The intensity value was determined to select the fluid lumen of the inner ear and the bone surface, in order to replicate the inner ear.Results:The model could be shaved, using surgical instruments, in the same manner as during real surgery. The stapes could be reproduced, making this model even more realistic than a previous version. The inner ear was recreated, along with the surrounding bony wall and the ossicles.Conclusion:This model facilitates dissection training and easy understanding of the relation between the labyrinth and the surrounding structures.

Classification of Temporal Bone Pneumatization on Computed Tomography

Skull Base ◽  
2007 ◽  
Vol 16 (S 2) ◽  
Author(s):  
Su-Jin Han ◽  
Sang-Woo Moon ◽  
Mee-Hyun Song ◽  
Ho-Ki Lee
Keyword(s):  
Computed Tomography ◽  
Temporal Bone ◽  
Temporal Bone Pneumatization

Surgical considerations during cochlear implantation: the utility of temporal bone computed tomography

2021 ◽  
pp. 1-8
Author(s):  
Beomcho Jun ◽  
Sunwha Song
Keyword(s):  
Computed Tomography ◽  
Temporal Bone ◽  
Cochlear Implantation ◽  
Round Window ◽  
Three Dimensional ◽  
Electrode Placement ◽  
Posterior Tympanotomy ◽  
Electrode Insertion ◽  
Window Approach ◽  
Bone Structures

Abstract Objective This paper describes the construction of portals for electrode placement during cochlear implantation and emphasises the utility of pre-operative temporal bone three-dimensional computed tomography. Methods Temporal bone three-dimensional computed tomography was used to plan portal creation for electrode insertion. Results Pre-operative temporal bone three-dimensional computed tomography can be used to determine the orientation of temporal bone structures, which is important for mastoidectomy, posterior tympanotomy and cochleostomy, and when using the round window approach. Conclusion It is essential to create appropriate portals (from the mastoid cortex to the cochlea) in a step-by-step manner, to ensure the safe insertion of electrodes into the scala tympani. Pre-operative three-dimensional temporal bone computed tomography is invaluable in this respect.

Amplification of RNA From Archival Human Temporal Bone Sections

1999 ◽  
Vol 109 (4) ◽  
pp. 617-620 ◽  
Author(s):  
Fumio Ohtani ◽  
Yasushi Furuta ◽  
Yukiko Iino ◽  
Yukio Inuyama ◽  
Satoshi Fukuda
Keyword(s):  
Temporal Bone ◽  
Human Temporal Bone ◽  
Archival Human Temporal Bone

The Labyrinthine Portion of the Facial Canal in Patients with Bell's Palsy Investigated by Computed Tomography

1987 ◽  
Vol 28 (1) ◽  
pp. 25-30 ◽  
Author(s):  
K. Wadin ◽  
L. Thomander ◽  
H. Wilbrand
Keyword(s):  
Computed Tomography ◽  
Temporal Bone ◽  
No Value ◽  
Bell’S Palsy ◽  
Ct Images ◽  
Slice Thickness ◽  
Facial Canal ◽  
Bell's Palsy ◽  
Unreliable Method ◽  
Different Parts

The reproducibility of the labyrinthine portion of the facial canal by computed tomography was investigated in 22 patients with Bell's palsy. The CT images were compared with those obtained in 18 temporal bone specimens. Measurements of the diameters of different parts of the facial canal were made on these images and also microscopically in plastic casts of the temporal bone specimens. No marked difference was found between the dimensions of the labyrinthine portion of the facial canal of the involved and healthy temporal bone in the patient, nor did these differ from the dimensions in the specimens. CT of the slender, curved labyrinthine portion was found to be of doubtful value for metric estimation of small differences in width. The anatomic variations of the canal rendered the evaluation more difficult. CT with a slice thickness of 2 mm was of no value for assessment of this part of the canal. Measurement of the diameters of the labyrinthine portion on CT images is an inappropriate and unreliable method for clinical purposes.

scholarly journals Characterization of Ultrasound Propagation Through Ex-vivo Human Temporal Bone

2008 ◽  
Vol 34 (10) ◽  
pp. 1578-1589 ◽  
Author(s):  
Azzdine Y. Ammi ◽  
T. Douglas Mast ◽  
I.-Hua Huang ◽  
Todd A. Abruzzo ◽  
Constantin-C. Coussios ◽  
...  
Keyword(s):  
Temporal Bone ◽  
Ex Vivo ◽  
Ultrasound Propagation ◽  
Human Temporal Bone
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