Table 1 Definition of visual scores for the qualitative analysis.

1

Marked blurring of electrode without definable margins relative to cochlear lateral wall

1

Severe artifact, non-diagnosable image

2

Moderate Blurring, but with definable margins

2

Poor image quality, partially non-diagnosable

3

Minimal blurring

3

Moderate image quality, limited diagnostic confidence

4

Sharp definition

4

Good image quality, sufficient for diagnosis

5

Excellent image quality with no artifact