The conclusion is as follows: HRCT was highly informative in identification of erosion of lateral semicircular canal. The stapes was only partially formed in two models and absent in the third. Our observations suggest that the left ear of this Hh specimen was healthy. Although the symptoms of SCD may be precipitated by head injury, no previous reports have described a temporal bone fracture directly causing SCD.

The mastoid was large and suggested a powerful sternocleidomastoid muscle. Fifty-nine cases 26 with medial otitis, 8 choresteatoma, 10 congenital malformation, 3 high jugular bulb, 2 otosclerosis, and 10 others were included in this study. Complex temporal region anatomy may confound fracture identification, and consequently a description of normal anatomy was included. Seventeen patients have each been followed a minimum of 3 years. The sensitivity and specificity of HRCT to diagnose cholesteatoma preoperatively was

On the third generation DSCT system, the tighter focal spot of 0. All patients underwent ENT evaluation and high-resolution CT of the temporal bone using 1 mm axial and coronal sections. Materials and methods Descriptive retrospective study over a 24 month period performed in the ENT radiology section of the Mohammed 6 university medical center in Marrakech.

Bone density development curves, wherein CT values were plotted against age, were created for each region.


The surgical findings were considered as final. Three models were produced and were evaluated. Computed tomography CT scans of 16 ears were used to 3D print their temporal bones. The brain CT numbers increased with the increase in the cranial bone CT numbers.

hrct temporal bone thesis

Sigmoid sinus anomaly was detected in patients However patients with history of trauma and those with known or detected neoplasm related to temporal bone were excluded.


Finally T1-weighted tempofal sequences in high resolution technique with fatsuppression after the intravenous application of contrast material will be performed in the coronal plane. Discussion HRCT imaging is necessary for anatomic determination of chronic otitis media, suspicion of congenital anomalies and to detect any loss of surgical landmarks caused by prior operation [ 7 ].

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

Involvement of hidden area, mastoid air cell system. The inner ear and tympanic cavities were similar in size and orientation, suggesting that their functions were probably similar. The results of sensitivity, positive predictability, bome accuracy by CT imagings were as follows: However, HRCT missed the involvement in 6 cases and overdiagnosed 8 cases. There is sclerosis of the mastoid.

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

After detailed clinical examination, the patients were subjected to high resolution computed tomography HRCT examination. Ossicular imagings of the bons bone in 3-D were reconstructed as if the malleus, incus and stapes were observed under microscope. Scanning is usually done in axial and coronal planes.

hrct temporal bone thesis

Find articles by Chuni Lal Thukral. Tc99m-scintigraphy was negative in 5 cases of otitis media suppurative and in 3 cases of otitis media chronica cum cholesteatoma, all with slight degree of osteosclerosis in the mastoid.

The role of pre-operative CT teporal in patients with chronic otitis media.

Although, the exact site of origin of these neoplasms is not identified, owing to the local bone destruction usually centered at posterior petromastoid platethe general consensus favors the endolymphatic sac as being the origin of these t Mean cortical bone width difference and mean external auditory canal width difference were 0. Location within middle ear and diagnostic considerations Click here to view. A low sensivity of 67 Ga-scintigraphy was demonstrated by positive Tc99m- bone -scintigraphy and negative 67 Ga-scintigraphy in a patient with atypical mastoiditis.


Normal anatomy of the temporal tempral in transverse and coronal sections was presented. Correlation between hrct and intra-operative findings.

High jugular bulb was found in patients, accounting for 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. The sensitivity of Tc99m- bone -scintigraphy in fracture and osteomyelitis of the temporal bone seems to be a function of the amount of reactive new bone formed.

hrct temporal bone thesis

Essential for surgical treatment anatomic details were estimated, especially canalis spiralis cochleae hrvt paid to attention. Other 2 patients had congenital aural atresia associated with microtia, 1 of these 2 also having middle ear anomalies abnormal ossicular chain. Between and82 patients 84 cases underwent temporal bone CT and were shown to have COM, with or without cholesteatoma after mastoidectomy and tympanoplasty.