Table 1 Image quality criteria and rating scale used for the subjective image quality assessment

Criteria

Cemented cup

1. There is a sharp delineation of the bone/cement interface

2. There is a sharp delineation of cement/poly interface

3. The image noise does not interfere with my clinical assessment

4. There is a sharp delineation of the trabecular bone structure

Uncemented cup

1. There is a sharp delineation of the bone/implant interface

2. There is a sharp delineation of titanium/poly interface

3. The image noise does not interfere with my clinical assessment

4. There is a sharp delineation of the trabecular bone structure

Rating scale

1. I am sure that the criterion is not fulfilled

2. I am almost sure that the criterion is not fulfilled

3. I am not sure if the criterion is fulfilled or not

4. I am almost sure that the criterion is fulfilled

5. I am sure that the criterion is fulfilled