78 Introduction to Medical Terminology
Copyright Goodheart-Willcox Co., Inc.
Test/Procedure Defi nition
radiography
RAY-dee-AH-gruh-fee
radi/o = X-rays
-graphy = process of
recording
Diagnostic imaging technique that uses
electromagnetic waves to create images
of the inside of the body. X-rays are used
to check for structural abnormality or
disease.
range-of-motion (ROM)
testing
Diagnostic procedure performed to
evaluate the extent to which joints can be
moved in a variety of directions.
sonography
suh-NAH-gruh-fee
son/o = sound
-graphy = process of
recording
Diagnostic imaging method involving
the use of high-frequency sound waves
to generate images of structures in the
body, such as muscles, ligaments, and
displaced or dislocated structures. Also
called diagnostic sonography or, more
commonly, ultrasound.
The term goniometry comes from the Greek gonia (“angle”) and metron
(“measure”). More precisely, goniometry is the measurement of the angles
produced by joints during range-of-motion activity.
Fascinating Fact
To biceps
To dry-earth strap
To triceps
Figure 3.13 An electromyogram, or EMG, is a graphic recording of the
contraction of a muscle produced by electrical stimulation.