Idemi_tracer_3_4k.zip
AiM Sportline produces a popular software called RaceStudio 3 used for automotive data logging. Their projects often involve "traces" of lap data, though a "4k" designation usually refers to video resolution or high-density sampling.
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In nuclear medicine, "tracers" are used for myocardial perfusion imaging. A "4k" file in this context could be a high-resolution 4K dataset or configuration for a specific imaging system. AiM Sportline produces a popular software called RaceStudio

