“What college courses do you take for nuclear medicine?”

Different training programs may have different requirements, but my advice would be at least some mathematics, such as algebra, and if you are interested and able to manage it, calculus is also helpful as well as statistics. Science courses such as biology, anatomy, chemistry and physics are also very helpful, but the more advanced courses such as differential equations in mathematics, advanced anatomy, or advanced chemistry such as biochemistry, organic chemistry or physical chemistry, are not essential. Such advanced courses are helpful if you want to be a Nuclear Medicine Physician or a nuclear chemist. Computer science continues to be of increasing importance, but except for specialized careers in nuclear medicine, computer programing is not necessary and more ordinary information technology and courses using basic computer skills (which almost all of them do now!) are more important.

Physics will help, but you need a Nuclear Medicine/imaging curriculum as you may be asked to employ CT, MRI ultrasound, etc., equipment in the really good hospitals. The University of
Cincinnati has such a program.
Good luck!