X-rays are high-energy electromagnetic beams of radiation that can penetrate through solid objects or tissues of the body. Their ability to penetrate through structures depends on the density of the structures. Structures of higher density such as bone absorb X-rays and do not allow them to pass through.
Ultrasound, also called sonography, is an imaging procedure that employs high-frequency sound waves to generate pictures of structures within your body on a computer screen.
Electrodiagnostic medicine is a medical subspecialty of neuromuscular medicine that aids in diagnosis, evaluation, and treatment of neuromuscular, musculoskeletal, and nervous system disorders. Electrodiagnostic physicians record and analyze results from the patient’s history and physical examination along with test results obtained from conductance of electrical impulses between muscles and nerves. Electrodiagnostic medicine helps in evaluating the causes of numbness, tingling, discomfort, weakness, fatigue, and muscles cramps.
Magnetic resonance imaging (MRI) is a computer-based diagnostic imaging procedure that uses a large magnetic field and radio waves to produce detailed images of the structures of the body to detect any abnormalities. It is particularly useful for imaging of the soft tissues which are not well visualized on X-rays.