Customize Reports

Im using DW MX 6.1.

When I run a report to highlight missing alt tags it shows me my spacer images in the report.

Am i correct in thinking that the correct notation for a spacer image for accessibility purposes is [alt=""] so the attribute is there but empty.

I there a way to differenciate in the reports the difference between missing attribute and an empty attribute? Or can I exclude parts of the code from the report, would probably be more useful.

Any help would be appreciated.

Thanks

Marc