Detection of superior semicircular canal dehiscence by virtual endoscopy: a pilot study.
OBJECTIVE
To examine the threshold of virtual endoscopy in the confirmation of superior semicircular canal dehiscence (SSCD).


METHODS
Retrospective case series.


METHODS
Three definite SSCD subjects, two possible SSCD subjects, and five control subjects.


METHODS
High-resolution temporal bone computed tomography and virtual endoscopy were performed in all subjects. Main outcome measures were to evaluate both intrajudge and interjudge reliability and to compare the closed threshold of diseased side with the contralateral side, both ears of patients with those of the control group.


RESULTS
The interjudge reliability between two observers was 0.934 and 0.926 (P < 0.001). The intrajudge reliability for two reviews were 0.916 and 0.902 (P < 0.001). The affected ear thresholds significantly differed from those of both unaffected ears and normal controls (P < 0.001 for both comparisons). Thresholds of unaffected ears and normal controls did not differ (P > 0.05).


CONCLUSIONS
Virtual endoscopy with critical evaluation of the consistent closed threshold provides an additional role in SSCD diagnosis.
Wang
Wen-Hung
WH
Department of Otolaryngology-Head and Neck Surgery, Chang Gung Memorial Hospital, Pu-Tzu City, Taiwan. evan_travel@hotmail.com
Lin
Yen-Chun
YC
Weng
Hsu-Huei
HH
Chen
Wen-Chang
WC
D000328:Adult; D015331:Cohort Studies; D003936:Diagnosis, Computer-Assisted; D004724:Endoscopy; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D010865:Pilot Projects; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012665:Semicircular Canals / Q000002:abnormalities* / Q000000981:diagnostic imaging; D013701:Temporal Bone / Q000002:abnormalities* / Q000000981:diagnostic imaging; D036542:Tomography, Spiral Computed