how can I recover my gho image when it is damaged ?

    I used symantec ghost 11.0 backup my C drive as a gho image, when using this  image recovery my partition, when it go to 50%, it prompted “out error file to the following  location", when the choice is confirmed, it prompted "Ghost has detected corruption in the image file,please perform an integrity check on the image"and then it quited. When using Ghost Explorer to open the image file, it prompted " Please select the last section in the image file. "when selecting Cancel, it prompted" Image file contains errors or the media is not ready "and then  it quited.Then file in the image is important,could some one tell me how can I recover the image?

Thank you very much!