Ready meals refer to meals that contain ingredients which have been pre-cooked, or meals that have been prepared in advance and are in a frozen, dried, chilled, or canned state. They are an easy alternative to food prepared at home, and can be prepared or consumed easily by thawing or heating. Ready meals are generally prepared based on recipes and cuisines inspired from different cultures. They are packaged food products that contain all the elements for either a single serving or for two servings. Ready meals are promoted and presented by vendors as a quick and time-saving alternative, which only require to be heated before consumption. They save time and effort for consumers as they do not require food to be prepared from scratch.

Radiopharmaceuticals are radioactive substances that are used for diagnosis or therapy purposes. These are made up of two components: a radioactive isotope that can be injected safely into the body, and a carrier molecule that delivers the isotope to the area to be treated or examined. Radiopharmaceuticals set out radiation, mostly in the form of alpha and beta particles, and target the affected areas. The dosages of radiopharmaceuticals that are used to diagnose medical problems vary, depending on the type of diagnosis. When radiopharmaceuticals are injected into the body, they emit radiation that can be traced with special cameras or computers. Radiopharmaceuticals find a major application in the field of oncology. Radiopharmaceuticals used in cancer treatment are small and simple substances, containing a radioactive isotope, and target specific areas of the body where cancer is present.