How to Read an X-ray Film

Save

X-ray films are taken of different areas of the body. If the body part contains bone it will show up as white because bone is dense and absorbs X-rays more than muscle or fat. If the body part contains gas or air it will show up as black because X-rays easily pass through gas.

Different Tissue Types

  • When you look at this chest X-ray, notice that the lungs look black because they are filled with air and the X-rays can pass through the air. The spine, ribs and shoulders appear white because they are dense and stop the X-rays from passing through. The heart appears gray because it is more dense than air and lung tissue but less dense than bone.

  • The image on the far right is of the abdomen of a patient who was injected with radiographic contrast material. The contrast medium contains iodine and when injected the body gets rid of it by excreting it through the kidneys. If you look closely toward the top of the image you can see the patient's kidneys. You can also see contrast media running from the kidneys to the bladder located toward the bottom of the image.

  • You actually see only the inside of the kidney called the renal pelvis because that is where the contrast medium gets excreted. You do not see the body of the kidney and you do not see any other internal organs, such as the stomach, liver, pancreas, gall bladder or spleen because they are not dense enough to stop the X-rays from penetrating.

  • This is an X-ray of a patient with a knee replacement. As before you can see the bones, in this case of the femur, tibia and fibula but notice how much more dense or white the replacement parts are. They are made of metal which is more dense than bone and shows up on the X-ray as being even more white than bone. Notice also that you cannot see any muscle, tendons or ligaments.

  • This X-ray is a lateral view of a thigh bone or femur with the knee and knee cap on the right side of the image. You can see a small dark vertical line about two thirds of the distance from the left side of the image and the end of the femur; that line is a fracture of the patient's femur.

Tips & Warnings

  • If you understand how X-rays interact with different tissues in the body you can make some sense of what you are looking at when you view X-ray images.
  • In medical terms you must be a licensed physician or radiologist to "read" X-rays and render a diagnosis based on that "reading." In the hospital setting, "reading" an X-ray means making a diagnosis based on what you see in the images.

References

  • "Textbook of Radiologic Technology"; Jacobi and Paris; 1968
  • Photo Credit an xray of a chest image by alma_sacra from Fotolia.com xrays image by JASON WINTER from Fotolia.com knee xray image by JASON WINTER from Fotolia.com xray of a broken leg bone image by alma_sacra from Fotolia.com
Promoted By Zergnet

You May Also Like

  • What Is a Spot on the Lung?

    Part of a health care regime may include periodic X-rays of the chest to check the lungs. Sometimes these X-rays return a...

  • Security X-Ray Training

    Transportation security officers help prevent dangerous objects from getting on board aircraft. They do this by screening passengers, baggage and cargo, using...

  • How to Spot Problems on an X-Ray

    Doctors use X-Rays to help diagnose health problems. X-Rays are an easy, painless procedure for patients, and they confirm whether bones and...

  • How to Take an X-Ray

    X-ray machines produce particles called photons that pass through the human body. The images from an X-ray machine are transferred to an...

  • How to Read an MRI of a Knee

    An MRI can show the internal structures within your knee, including bones and soft tissues. This information can be used to diagnose...

  • How to Read a Dental X-Ray

    Reading a dental X-ray, a black and white picture of the inside of a tooth and bone, requires professional dentistry training, a...

  • How to Make a Fake Xray Film

    If you'd like to make a bogus X-ray film -- as a gag, for a prop, or as part of a costume...

  • What Are the Side Effects of X-Rays?

    The side effects of X-rays start at the cellular level, but only constant and regular exposure to X-rays will produce any noticeable...

Related Searches

Check It Out

This Is the Beauty Routine of a Yelp Sales Manager

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!