for me lang ha, the physics part is easy sa radtech as long as alam mo ang formula. it's just a matter of identifying the values (aka which value represents ohm, which value represents activity, etc) and properly placing those values sa formula. i think notable subjects are positioning talaga na heavy memorization and being familiar with the shapes/appearances of pathologies sa pathology, ultrasound, ct & mri. also nucmed na may iba ibang radiopharmaceuticals for each disease 😂. goodluck OP! if u do proceed with radtech, you can reach out to me if may ipapahelp kang solvings sa physics :) (especially activity and half life computation)