Final answer:
In nuclear medicine, factors such as wavelength and numerical aperture can affect resolution.
Step-by-step explanation:
In nuclear medicine, there are several main factors that affect resolution. One of the factors is wavelength. Shorter wavelengths can resolve smaller objects, so techniques that use shorter wavelengths, such as positron emission tomography (PET), have higher resolution. Another factor is numerical aperture, which measures a lens's ability to gather light. Higher numerical aperture leads to better resolution.