An EKG or also known as ECG (electrocardiogram) machine measures the electrical impulses of the heart. "Cardio" means heart, and "gram" means measurement.
electrocardiograph
Cystourethrogram is the medical term meaning recording of the bladder and urethra.
Scope is the medical term meaning an instrument used for observation. There is no general term for any medical instrument.
Vasography is the medical term meaning process of recording the vas deferens. Vasography produces a vasogram.
-scope is the medical terminology combining form meaning instrument to view.
A cystogram is a recording of the urine in the bladder.
A dermatome is an instrument to cut skin.
Anoscope is a medical term meaning instrument for the direct visual examination of the anus.
Polysomnography is the recording commonly known as a sleep study.
Angiography is the medical term meaning the process of recording a picture of blood vessels. The resulting picture is an angiograph.
Rhinoscope
-scope
Chest X-ray