Inadequate acoustic temporal bone windows:transcranial contrast-enhanced color-coded and power-based sonography in the assessment of the basal cerebral circulation J. Federlein, Th. Postert, Th. B�ttner, H. Przuntek. Department of Neurology, Ruhr-University Bochum, Germany

1997 ◽  
Vol 5 ◽  
pp. 47-48
Keyword(s):  
Temporal Bone ◽  
Cerebral Circulation ◽  
Contrast Enhanced

scholarly journals Temporal bone contrast-enhanced high-resolution CT evaluation of pulsatile tinnitus after sigmoid sinus wall reconstruction

2018 ◽  
Vol 60 (1) ◽  
pp. 54-60 ◽  
Author(s):  
Heyu Ding ◽  
Pengfei Zhao ◽  
Han Lv ◽  
Xuehuan Liu ◽  
Rong Zeng ◽  
...  
Keyword(s):  
Temporal Bone ◽  
Short Interval ◽  
Sigmoid Sinus ◽  
Imaging Features ◽  
Pulsatile Tinnitus ◽  
Interval Group ◽  
Sinus Wall ◽  
Contrast Enhanced ◽  
Air Cells ◽  
Mastoid Air Cells

Background Sigmoid sinus wall reconstruction (SSWR) is a proven effective treatment for pulsatile tinnitus (PT) caused by sigmoid sinus wall dehiscence (SSWD) with or without sigmoid sinus diverticulum (SSD); however, comprehensive analysis of the postoperative imaging manifestations has not yet been reported. Purpose To analyze temporal bone computed tomography (CT) imaging features following SSWR in patients with PT. Material and Methods Following SSWR, temporal bone contrast-enhanced high-resolution CT (HRCT) images from 33 PT cases were retrospectively analyzed. Patients were divided into two groups based on follow-up interval: a short-interval group (≤18 months, 12 cases) and a long-interval group (>18 months, 21 cases). The mending material density and morphology was analyzed. Postoperative changes of the venous sinus were evaluated. Imaging manifestations of the normal temporal bone and mastoid air cells adjacent to the operative field were observed. Results The order of CT values of mending materials was significantly lower in the short-interval group than in the long-interval group (Z = −4.716, P < 0.001); the incidence of complete newly remodeled cortical bone on the rim of the mending materials was significantly higher in the long-interval group than in the short-interval group ( P < 0.001). Eleven patients (33.3%) showed varying degrees of remnant SSWD. The mending materials and normal mastoid bone structure showed complete fusion (n = 12, 36.4%), partial fusion (n = 16, 48.5%), or complete separation (n = 5, 15.2%). Conclusion Temporal bone contrast-enhanced HRCT can be used to observe imaging features of the mending materials, venous sinus, adjacent normal temporal bone and mastoid air cells following SSWR.

Clinical Importance of Temporal Bone Features for the Efficacy of Contrast-Enhanced Sonothrombolysis: a Retrospective Analysis of the NOR-SASS Trial

2017 ◽  
Vol 9 (4) ◽  
pp. 333-339
Author(s):  
Vojtech Novotny ◽  
Aliona Nacu ◽  
Christopher E. Kvistad ◽  
Annette Fromm ◽  
Gesche F. Neckelmann ◽  
...  
Keyword(s):  
Retrospective Analysis ◽  
Temporal Bone ◽  
Clinical Importance ◽  
Contrast Enhanced

Measurement of cerebral circulation by dynamic susceptibility contrast-enhanced MRI: effect of tracer delay

2004 ◽  
Vol 1265 ◽  
pp. 159-166 ◽  
Author(s):  
M Ibaraki ◽  
E Shimosegawa ◽  
H Toyoshima ◽  
K Ishigame ◽  
S Miura ◽  
...  
Keyword(s):  
Cerebral Circulation ◽  
Dynamic Susceptibility ◽  
Dynamic Susceptibility Contrast ◽  
Enhanced Mri ◽  
Contrast Enhanced ◽  
Susceptibility Contrast ◽  
Contrast Enhanced Mri

Neuroradiological Detection of Small and Intracanalicular Acoustic Tumors: An Emphasis on CO2 Contrast-enhanced Computed Tomographic Cisternography

Neurosurgery ◽  
1982 ◽  
Vol 11 (6) ◽  
pp. 733-738 ◽  
Author(s):  
W. Craig Clark ◽  
James D. Acker ◽  
Jon H. Robertson ◽  
Gale Gardner ◽  
John J. Dusseau ◽  
...  
Keyword(s):  
Ct Scan ◽  
Temporal Bone ◽  
Intravenous Contrast ◽  
Ct Cisternography ◽  
Computed Tomographic ◽  
Contrast Enhanced ◽  
Acoustic Tumor ◽  
Contrast Ct

Abstract Seventy patients suspected clinically of having an acoustic tumor were evaluated using the computed tomographic (CT) scan as the initial neuroradiological procedure, followed by CO2 contrast CT cisternography in cases where the intravenous contrast-enhanced scan did not reveal any lesion. Forty-eight gas CT cisternograms revealed 10 small acoustic tumors, 2 of which were totally intracanalicular. The authors present a review of the basic CT anatomy of the temporal bone as it relates to acoustic tumors. Based upon the ease of performance of the procedure, the low postexamination morbidity, and the excellent diagnostic results, CO2 CT cisternography is recommended as the procedure of choice in the diagnosis of small and intracanalicular acoustic tumors.

scholarly journals Recurrent paraganglioma of occipito-temporal bone masquerading as temporal bone malignancy

2013 ◽  
Vol 19 (1) ◽  
pp. 58-64
Author(s):  
Sushil Kumar Aggarwal ◽  
Prof Rajkumar
Keyword(s):  
Temporal Bone ◽  
Nerve Palsy ◽  
Facial Nerve Palsy ◽  
Vocal Cord Paralysis ◽  
Complete Excision ◽  
Contrast Enhanced ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography ◽  
Extensive Involvement ◽  
Left Middle

A 33-year-old male patient presented with left facial nerve palsy, left earache along with left ear bloody discharge for last 4 months. He also had left vocal cord paralysis and impairment of hearing on left side. Contrast enhanced computed tomography (CECT) of temporal bone revealed enhancing mass present in left middle ear and mastoid and also involving left temporal and occipital bone causing destruction of bone, mimicking as temporal bone malignancy. Complete excision of tumor was done and biopsy came out to be paraganglioma. Patient had been operated previously for similar lesion 8 years ago. Paraganglioma with such extensive involvement of bone is not reported in literature and hence we describe this case to distinguish it from temporal bone malignancy. The tumor was not functional clinically as well as biochemically. DOI: http://dx.doi.org/10.3329/bjo.v19i1.12150 Bangladesh J Otorhinolaryngol 2013; 19(1): 58-64

Insufficient and absent acoustic temporal bone window: Potential and limitations of transcranial contrast-enhanced color-coded sonography and contrast-enhanced power-based sonography

1997 ◽  
Vol 23 (6) ◽  
pp. 857-862 ◽  
Author(s):  
Thomas Postert ◽  
Jens Federlein ◽  
Horst Przuntek ◽  
Thomas Büttner
Keyword(s):  
Temporal Bone ◽  
Bone Window ◽  
Contrast Enhanced

scholarly journals Rapid diffusion-weighted MRI for the investigation of recurrent temporal bone cholesteatoma

2020 ◽  
Vol 33 (3) ◽  
pp. 210-215
Author(s):  
Richard G Kavanagh ◽  
Stephen Liddy ◽  
Anne G Carroll ◽  
Yvonne M Purcell ◽  
Anna E Smyth ◽  
...  
Keyword(s):  
Temporal Bone ◽  
Kappa Coefficient ◽  
Acquisition Time ◽  
Tertiary Referral Centre ◽  
Perfect Agreement ◽  
Post Contrast ◽  
Diffusion Weighted ◽  
Air Interface ◽  
Contrast Enhanced ◽  
Additional Value

Background Suspected cholesteatoma recurrence is commonly investigated with magnetic resonance imaging (MRI) of the temporal bone. Non-echo planar diffusion-weighted imaging (non-EP DWI) has become the sequence of choice. Purpose To assess the agreement between an MRI protocol incorporating both non-EP DWI and contrast-enhanced sequences, and a shortened protocol without contrast-enhanced sequences in the assessment of suspected cholesteatoma recurrence. Materials and methods One hundred consecutive MRIs, consisting of T2-weighted, non-EP DWI and pre- and post-contrast T1-weighted sequences, were reviewed by two radiologists at a tertiary referral centre. Agreement between the two protocols was assessment by means of a weighted Cohen kappa coefficient. Results We found a near perfect agreement between the two protocols (kappa coefficient with linear weighting 0.98; 95% confidence interval 0.95–1.00). There were two cases in which the two protocols were discordant. In both cases, the lesion measured <3 mm and images were degraded by artefact at the bone–air interface. The shortened protocol without post-contrast sequences yielded a 32% reduction in acquisition time. Conclusion When non-EP DWI is available, contrast-enhanced sequences can be omitted in the vast majority of cases without compromising diagnostic accuracy. Contrast-enhanced sequences may provide additional value in equivocal cases with small (<3 mm) lesions or in cases where images are degraded by artefact.

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