Related Experiment Video
Updated: Apr 13, 2026
Testing of all Six Semicircular Canals with Video Head Impulse Test Systems
Published on: April 18, 2019
Comparison of digital volume tomography and high-resolution computed tomography in detecting superior semicircular
Martin Bremke1, Jan-Christoffer Luers, Andreas Anagiotos
1Department of Otorhinolaryngology, Head and Neck Surgery.
Conclusion:
In detecting a thin bony coverage of a superior semicircular canal (SSC), digital volume tomography (DVT) scans in Poeschl projection seem to be superior to high-resolution computed tomography (CT) scans. Still, a definite diagnosis of SSC dehiscence (SSCD) is not possible with any radiologic imaging technique.
Objective:
To compare CT and DVT to find out whether DVT is equal, better or worse in showing a thin bony layer on top of an SCC.
Methods:
In 11 human temporal bone specimens, the SSC was microscopically blue-lined leaving a thin bony coverage on top of it. All specimens were assessed with both high-resolution CT and DVT. After reconstructing the images in Stenvers and Poeschl projections, all images were evaluated by five independent examiners experienced in radiologic imaging of the temporal bone using a four-point ordinal scale, from 1 (distinct dehiscence) to 4 (distinct coverage).
Results:
The mean score for all CT scans was 2.58 compared with 3.22 for DVT scans (p = 0.000). Poeschl projection showed a mean score of 3.25 compared with 2.55 for Stenvers projection (p = 0.000). The best imaging modality was found to be DVT scans in Poeschl projections, with a mean score of 3.60.
