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Chest X-ray Center - Chapel Hill, NC

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Chapel Hill, North Carolina

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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 Chapel Hill

  • In case of Emergency, call 911

Nearby Chapel Hill Hospitals *

UNC Health Care
101 Manning Dr
Chapel Hill, NC 27514
(919)966-4131

Duke University Medical Center
2301 Erwin Rd
Durham, NC 27710
(919)684-8111

Durham VA Medical Center
508 Fulton St
Durham, NC 27705
(919)286-0411

Durham Regional Hospital
3643 N Roxboro Rd
Durham, NC 27704
(919)470-4000

Select Specialty Hospital Durham
3643 N Roxboro Rd
Durham, NC 27704
(919)470-9000

North Carolina Specialty Hospital
3916 Ben Franklin Blvd
Durham, NC 27704
(919)956-9300

WakeMed Cary Hospital
1900 Kildaire Farm Rd
Cary, NC 27518
(919)350-2000

Rex Healthcare
4420 Lake Boone Trl
Raleigh, NC 27607
(919)784-3100

John Umstead Hospital
1003 12th St
Butner, NC 27509
(919)575-7211

Duke Raleigh Hospital
3400 Wake Forest Rd
Raleigh, NC 27609
(919)954-3000

Chatham Hospital
300 W Third St
Siler City, NC 27344
(919)663-2113

Alamance Regional Medical Center
1240 Huffman Mill Rd
Burlington, NC 27215
(336)538-7000

WakeMed Raleigh Campus
3000 New Bern Ave
Raleigh, NC 27610
(919)350-8000

Holly Hill Hospital
3019 Falstaff Rd
Raleigh, NC 27610
(919)250-7000

Central Carolina Hospital
1135 Carthage St
Sanford, NC 27330
(919)774-2100

Person Memorial Hospital
615 Ridge Rd
Roxboro, NC 27573
(336)599-2121

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