In medical terminology, the suffix -graph refers to an instrument used for recording data or the process of recording. This suffix is commonly tested on the CPC exam.
Examples include:
Electrocardiograph – instrument used to record heart activity
Angiograph – instrument used to record images of blood vessels
To distinguish from related suffixes:
-gram = the record or image itself
-graphy = the process of recording
Thus, option A is correct.
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