Using PartitionGuru, you can load and open partition image and extract files from the image. The image will be treated as a partition.
To load an image files, click the menu "Tools" -> "Explore Partition Image File". Following dialog box will be shown:
Select the partition image file which you want to open, then click "Open" button. PartitionGuru will start loading the partition image shown as the following:
Then, the image was loaded as a partition, you can manage it as a read-only partition.
For example, you can list its files and foders and copy files to another parition.