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Hand x-ray
Definition
A hand x-ray is a medical image of one or both hands.
Alternative Names
X-ray - hand
How the test is performed
X-rays are a form of electromagnetic radiation like light, but of higher energy. They can pass through the body to form an image on film. Structures that are dense (such as bone) will appear white, air will be black, and other structures will be shades of gray.
A hand x-ray is taken in a hospital radiology department or your health care provider's office by an x-ray technician. You will be asked to place your hand on the x-ray table, and keep it very still as the picture is being taken. You may need to change the position of your hand, so additional images can be taken.
How to prepare for the test
Inform the health care provider if you are pregnant. Remove all jewelry.
How the test will feel
Generally, there is little or no discomfort associated with x-rays.
Why the test is performed
Hand x-ray is used to detect fractures, tumors, or degenerative conditions of the hand. Hand x-rays may also be performed to assist in determining the "bone age" of a child in order to determine if metabolic or nutritional disorders are interfering with proper growth.
Normal Values
What abnormal results mean
Abnormal results may include fractures, bone tumors, degenerative bone conditions, and osteomyelitis (inflammation of the bone caused by an infection).
What the risks are
There is low radiation exposure. X-rays are monitored and regulated to provide the minimum amount of radiation exposure needed to produce the image. Most experts feel that the risk is low compared with the benefits. Pregnant women and children are more sensitive to the risks of x-rays.
Special considerations
References
Mettler FA. Skeletal system. In: Mettler FA, Jr, ed. Essentials of Radiology. 2nd ed. Philadelphia, Pa: Saunders Elsevier; 2005:chap 8.
Rogers LF, Taljanovic MS, Boles CA. Skeletal trauma. In: Adam A, Dixon AK, eds. Grainger & Allison's Diagnostic Radiology. 5th ed. New York, NY: Churchill Livingstone; 2008:chap 46.
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