Radiology, also known as roentgenology is a branch of science which deals with diagnosis and treatment of diseases with the aid of electromagnetic radiations, and some radioactive elements. The physician with specializes in this particular field is called a Radiologist. Medical imaging is also known as Diagnostic imaging, they utilise ionizing radiations, except MRI and ultrasound. Sometimes even radioactive substances are used to produce visual images of the internal structures and any abnormalities like cancer related, heart related, etc. there are varied types of techniques being utilised to detect the disease. Nuclear medicine imaging is a type of medical imaging, which utilises radiotracers that help in diagnosis of various diseases like cancer, heart problems, gastrointestinal problems, other abnormalities present in the body. This type of scans usually provides apt and precise results which are needed to make the diagnosis at an early stage.