Adenomatous Tumors of the temporal bone are rare. We can hence conclude HRCT is useful for diagnosis, surgical planning and management of temporal bone pathologies. Transverse and coronal sections of the cases were selected from 68 patients with various otological diseases. A total of 49 articles were included, covering cadaveric, animal, plastic and virtual simulation platforms. The ability of the radiological investigations to detect the various pathological and anatomical variations were evaluated. HRCT findings, in the treatment of any congenital abnormality of the ear were a good guide to the surgeon for planning and management.

Five bony canals in the fundus of the internal auditory canal were identified as nerve canals. Congenital microtia with external auditory canal atresia with fused ossicles. Department of Radiology ; Koekelkoren, E. Mathematical models were developed to predict internal anatomy based on external structures. Axial and oblique coronal reconstruction images of the temporal bone were made with a reconstruction thickness of 0.

Horizontal tomography was proved to be contributory enough to obtain the whole ossicular chains and the whole labyrinthine capsule. Multiple regression analysis was used to assess the effects of age, cranial size, and cranial bone CT numbers on the brain CT numbers.

hrct temporal bone thesis

CT examinations on patients were reviewed and the presence or absence of ICA calcifications was ranked as absent, questionable or definitive. Among the patients with congenital hearing loss, HRCT showed that 26 cases Radiation injury to the temporal bone.


One year after the operation, the flap was completely incorporated. The sensors were also usable for recording the trace after the surgery as a log by MRI. Hrft hypothesize that an augmented neuronavigation system that continuously calculates the distance to these structures and warns if the surgeon drills too close, will aid in making safe surgical approaches.


However, for precise topographic analysis of the course of the fracture additional coronal sections were necessary in most of the cases. HRCT axial and coronal images of the right temporal bone show soft tissue in the epitympanum long arrow and fluid level short arrows in A and B in the mastoid air cells. There is sclerosis of the mastoid.

Orthopantomography was found to be superior in the demonstration of the petrous apex, while the superior semicircular canal was better demonstrated on the conventional views. Tumorous lesions of bone thesiw soft tissue were well delineated and characterized by CT and MR images.

The mean AP diameter of the mastoid cavity was Eighty participants with normal hearing, aged 3 months to 42 years, participated in this study. Later, intracranial complications such as meningitis, temporal lobe or cerebellar abscess, and cranial neuropathies may occur.

Temporal bone dissection simulator for training pediatric otolaryngology surgeons.

hrct temporal bone thesis

As per Keskin et al. Evaluation of temporal bone pneumatization on high resolution CT HRCT measurements of the temporal bone in normal and otitis media group and their correlation to measurements of internal auditory meatus, vestibular or cochlear aqueduct. Measurement of anatomical indices temporwl human temporal bone has been reported only sporadically using high resolution CT.

Role of High Resolution Computed Tomography in Evaluation of Pathologies of Temporal Bone

Conclusion Overall, the results of the present study showed a good agreement between HRCT and operative findings. Scanning parameters of kV, mAs, mm section thickness, 0. Ninety-three patients had at least one SCD.

Mass is eroding ossicular chain, causing bony defect in the postero-lateral mastoid wall. Utility of 3D printed temporal bones in pre-surgical planning for complex Bone Bridge cases.


Tympanic plate fractures in temporal bone trauma: The patient with abnormal ossicular chain on HRCT also underwent exploration of the middle ear followed by ossicular reconstruction.

We explored correlations between internal anatomical hrft and metrics established to quantify thesos position of external landmarks that are commonly exposed in the operating room, or the temporal bone laboratory, before commencement of drilling. Aim This prospective study aimed to study normal variations, congenital anomalies and infective pathologies of the temporal bone along with their complications on HRCT and to correlate these imaging findings surgically, wherever available.

Alternatives to traditional training can consist of drilling artificial models made of plaster or plastic but also virtual reality VR simulation. The predictive value of high resolution bon tomography in chronic suppurative ear disease.

The implemented framework is capable of automatic calibration of Hounsfield Units to trmporal equivalent values and the estimation of a prediction interval per scan. The anterior limb of the left lateral semicircular canal is eroded. The anterior semicircular canal was obvious immediately beneath the arcuate eminence, and the topographical relationships of the vestibulocochlear organ and adjacent great vessels were easily discernible.

Temporal bone imaging is challenging and involves thorough understanding of the anatomy, especially in relation to HRCT imaging. Conversely, in cases where CT scans are not available, or in the temporal bone laboratory where residents are usually not provided with CT scans, it would be beneficial if the internal anatomy of a temporal bone could be inferred from external landmarks.

hrct temporal bone thesis