Table 2:

Pure tone audiometry and rSI results of the cochlea on 3D FLAIR MR images according to tumor location

TotalTumor LocationPa
IAC (ANIAC)IAC and CPA Cistern (ANCPA)
Measured cochlear volume (mm3)181.98 ± 26.5177.5 ± 26.0183.1 ± 25.8.637
PTA (dB)b43.4 ± 21.530.3 ± 17.346.2 ± 21.4<.001
rSI of the cochlea on 3D FLAIRb0.57 ± 0.180.42 ± 0.150.60 ± 0.17<.001
Correlation coefficientcr = 0.277r = 0.471r = 0.090
Pc.005.027.427
  • Note:—rSI indicates relative signal intensity divided by the mean of the signal intensities of the corresponding brain stem.

  • a P between the results of ANIAC and ANCPA.

  • b The results are expressed as the mean ± SD.

  • c Correlation coefficient and P between the results of PTA and the rSI of the cochlea on 3D FLAIR images.