This is a good piece (Siemens) outlining a new direction in PET imaging: Think Whole-body Dynamic PET Imagings for Research Only? Perhaps it’s Time to Re-evaluate. Also see an example dynamic imaging animation. Our group was the earliest one to propose (in 2011) and extensively publish this promising approach (e.g. companion papers in 2013, and onwards). It is very rewarding to see that this framework may be translated to clinical practice, thanks to efforts of multiple groups that are now pursuing it.