The version is 2.2.2, lshdr, analyze ECAT files with this tool. lshdr help you list the subheader of an ECAT 6.3 or 7.x file. Currently most analysis programs can use PET image data in ECAT 7 format, which is the format that ECAT HR+ produces. During a long transitional stage most programs will be able to read also ECAT 6.3...