Hello aspirant,
NEET (National Eligibility cum Entrance Test) is primarily for admission to MBBS and BDS courses. It is not the standard entrance exam for BSc Nuclear Medicine.
Typically, admission to BSc Nuclear Medicine programs is based on:

• Merit based on 10+2 scores: Many colleges consider your performance in the 12th standard, especially in subjects like Physics, Chemistry, and Biology.
• Entrance Exams: Some colleges conduct their own entrance exams for BSc Nuclear Medicine.
• Direct Admission: In certain cases, based on the availability of seats, direct admission might be possible.
  
  

For more information you can check out the link attached below.

https://www.careers360.com/courses/nuclear-medicine-course