Computer Imaged and needs DATA RECOVERY

We have a client computer that was imaged using Ghostcast Server. The data was not backed up before imaging. Can the data be recovered, even after the computer was reimaged? If so, what software can provide this service?
On deck; PMP, C|EH
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Web: http://cyberresearchgroup.com
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I think you can dld from here:
Symantec Ghost Explorer Software Informer: Latest version download, news and info about this Symantec program.
Everything was overwritten.
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