Table 1:

MRI/CT detection of the superior semicircular canal dehiscencea

SSC (213 Canals, 11 Excluded)Dehiscence on CT (No.)No Dehiscence on CT (No.)
Dehiscence on MRI (1.5T/3T)11 (5/6)7 (2/5)
No dehiscence on MRI (1.5T/3T)0 (0/0)195 (72/123)
  • a Detailed results for 1.5T and 3T are displayed in parentheses as follows: (1.5T/3T). Of the 224 SSCs in 112 patients, 11 were excluded because of artifacts on CT and/or MRI. In the remaining 213 canals, 11 of the 18 (11 + 7) SSC dehiscence cases seen on FIESTA were confirmed on CT. When there was no SSC dehiscence on MRI, there was no SSC dehiscence seen on CT.