An atom is the smallest particle of an element that has properties of that element. is an aton
Molecules are particles made up of two or more atoms bonded, or joined, together. Based on the definitions above,is an atom whileis a molecule.

Hi there, so gamma-ray detection from tracers: Pet Scan, assess disease progression, tissue function: Nuclear Medicine Scan, a hybrid scan that involves nuclear medicine and x-ray imaging: PET/CT, and lastly radiation treatment near or within the tumor from implanted "seeds": Brachytherapy. Hope this helps <3.

Explanation:

btw you cute <3.