Open IMS File
IMS files are generated by medical imaging software and contain information in medical instrument specific format. IMS format can originate from Bitplane, an Oxford Instruments Company. IMS Bitplane file format is described on Bio-Formats Bitplane IMS page. IMS file format could be parsed by Bio-Formats Library.
You can also check the list of all formats supported by Bio-Formats library.
Full specification of Bitplane IMS file is available at Imaris Reference Manual file.
In order to open IMS file make sure that you have one of the above libraries/applications installed and double click on the IMS file to open.