Case number/sex/age | Clinical/audiometric presentation | Preliminary MRI findings | Interval between MRI and HRCT | Subsequent HRCT findings | Correlation between MRI and HRCT findings |
---|---|---|---|---|---|
1/F/43 | Asymmetric (R) SNHL | Intermediate T1 signal and PCE in (B/L) FA regions + pericochlear regions | 1 month | B/L fenestral and pericochlear hypodense plaques | MRI findings closely match HRCT |
2/M/28 | Asymmetric (L) SNHL | Reported normal | 4 months | B/L fenestral hypodense plaques. No pericochlear disease | Otosclerosis missed on MRI at first read. Retrospective evaluation showed very subtle focal PCE in (B/L) FA |
3/F/57 | Asymmetric (L) SNHL | Intermediate T1 signal and PCE in (B/L) FA + pericochlear regions. Also enhancement around (B/L) SCC | 2 weeks | B/L fenestral and pericochlear hypodense plaques. Also extensive plaques around B/L SCC | MRI findings closely match HRCT |
4/M/41 | Asymmetric (L) SNHL | Intermediate T1 signal and PCE at bilateral FA + (R) pericochlear region | 1 month | B/L fenestral and pericochlear hypodense plaques. (R) OW occluded, (L) OW narrowed | (L) pericochlear disease not detected on MRI |
5/M/47 | (B/L) heavy SNHL | Intermediate T1 signal and PCE in (B/L) FA + pericochlear regions | 18 months | B/L fenestral and pericochlear hypodense plaques | MRI findings closely match HRCT |
6/M/61 | Asymmetric (L) SNHL | Intermediate T1 signal and PCE in (B/L) FA + pericochlear regions. Also T2 hyperintensity in (B/L) pericochlear regions | 2 months | B/L fenestral and pericochlear hypodense plaques. (L) RW obliterated | MRI findings closely match HRCT |
7/M/64 | (B/L) heavy SNHL | Intermediate T1 signal and PCE in (B/L) FA + pericochlear regions. Also T2 hyperintensity in (B/L) pericochlear regions. Right IAC diverticulum | 1 week | B/L fenestral and pericochlear hypodense plaques Right IAC diverticulum | MRI findings closely match HRCT |
8/M/46 | (R) MHL | Intermediate T1 signal and PCE in (B/L) FA + pericochlear regions | 1 month | B/L fenestral and pericochlear hypodense plaques. (R) OW obliterated | MRI findings closely match HRCT |
9/F/61 | (B/L) heavy SNHL | Intermediate T1 signal and PCE in (B/L) FA + pericochlear regions. Possible tiny (R) IAC diverticulum | 1 month | B/L fenestral and pericochlear hypodense plaques. Right IAC diverticulum | MRI findings closely match HRCT |