What is the meaning of the suffix "-gram" in medical terms?

The suffix "-gram" is used in medical terminology to denote a record or a picture that is created as a result of a specific imaging or recording process. This can be seen in terms such as "radiogram," which refers to an image produced by radiography, or "electrocardiogram," which is a record of the electrical activity of the heart. The use of "-gram" indicates that the term refers to a document or visual representation of data related to anatomical structures or physiological activity. This understanding is crucial for interpreting various medical tests and reports.