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Chest X-ray Center - Knoxville, TN

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Knoxville, Tennessee

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Chest X-ray

What is a chest X-ray?

A chest X-ray is a radiology test that involves exposing the chest briefly to radiation to produce an image of the chest and the internal organs of the chest. An X-ray film is positioned against the body opposite the camera, which sends out a very small dose of a radiation beam. As the radiation penetrates the body, it is absorbed in varying amounts by different body tissues depending on the tissue's composition of air, water, blood, bone, or muscle. Bones, for example, absorb much of the X-ray radiation while lung tissue (which is filled with mostly air) absorbs very little, allowing most of the X-ray beam to pass through the lung.

What is a shadow on a chest X-ray?

Due to the differences in their composition (and, therefore, varying degrees of penetration of the X-ray beam), the lungs, heart, aorta, and bones of the chest each can be distinctly visualized on the chest X-ray. The X-ray film records these differences to produce an image of body tissue structures and these are shadows seen on the X-ray. The white shadows on chest X-ray represent more dense or solid tissues, such as bone or heart, and the darker shadows on the chest X-ray represent air filled tissues, such as lungs.

How is the chest X-ray procedure performed?

Patients obtaining a chest X-ray will often be requested to use an X-ray gown, and extra metallic objects such as jewelry are removed from the chest and/or neck areas. These objects can block X-ray penetration, making the result less accurate. Patients may be asked to take a deep breath and hold it during the chest X-ray in order to inflate the lungs to their maximum, which increases the visibility of different tissues within the chest.

The chest X-ray procedure often involves a view from the back to the front of the body as well as a view from the side. The view from the side is called a lateral ...

Recommended Reading Related to Chest X-ray

Low Blood Pressure »

What is low blood pressure?

Blood pressure is the force exerted by circulating blood on the walls of blood vessels. It constitutes one of the critically important signs of life or vital signs which include heart beat, breathing, and temperature. Blood pressure is generated by the heart pumping blood into the arteries modified by the response of the arteries to the flow of blood.

An individual's blood pressure is expressed as systolic/diastolic blood pressure, for example, 120/80.The systolic blood pressure (the top number) represents the pressure in the arteries as the muscle of the heart contracts and pumps blood into them. The diastolic blood pressure (the bottom number) represents the pressure in the arteries as the muscle of the heart relaxes following its contraction. Blood pressure always is higher when the heart is pumping (squeezing) than when it is relaxing.

The range of systolic blood pressure for most healthy adults falls between 90 and 120 mil...

Emergency Contact for Knoxville

  • In case of Emergency, call 911

Nearby Knoxville Hospitals *

Fort Sanders Regional Medical Center
1901 Clinch Ave SW
Knoxville, TN 37916
(865)541-1111

Baptist Riverside Outpatient Testing
137 W Blount Ave
Knoxville, TN 37920
(865)218-7011

Select Specialty Hospital
1901 Clinch Ave
Knoxville, TN 37916
(865)541-2600

East Tennessee Children's Hospital
2018 Clinch Ave
Knoxville, TN 37916
(865)541-8000

St Marys Health System
900 E Oak Hill Ave
Knoxville, TN 37917
(865)545-8000

University of Tennessee Medical Center
1924 Alcoa Hwy
Knoxville, TN 37920
(865)544-9000

Lakeshore Mental Health Institute
5908 Lyons View Dr
Knoxville, TN 37919
(865)584-1561

Peninsula Hospital
2347 Jones Bend Rd
Louisville, TN 37777
(865)970-9800

Parkwest Medical Center
9352 Park West Blvd
Knoxville, TN 37923
(865)373-1000

Baptist Hospital for Women
10820 Parkside Dr NW
Knoxville, TN 37934
(865)218-6011

Blount Memorial Hospital
907 E Lamar Alexander Pkwy
Maryville, TN 37804
(865)983-7211

Methodist Medical Center of Oak Ridge
990 Oak Ridge Tpke
Oak Ridge, TN 37830
(865)835-1000

Ridgeview Psychiatric Hospital & Center
240 W Tyrone Rd
Oak Ridge, TN 37830
(865)482-1076

Fort Loudoun Medical Center
550 Fort Loudoun Medical Center Dr
Lenoir City, TN 37772
(865)271-6000

Fort Sanders Sevier Medical Center
709 Middle Creek Rd
Sevierville, TN 37862
(865)429-6100

St Mary's Jefferson Memorial Hospital
110 Hospital Dr
Jefferson City, TN 37760
(865)471-2500

St Mary's Medical Center of Campbell County
923 E Central Ave
La Follette, TN 37766
(423)907-1200

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