Radiography

What is an X-ray?

Radiography, also known as conventional radiology or X-ray radiography, is a fundamental medical technique that uses ionizing radiation to produce images of the internal structures of the human body. Since its discovery by Wilhelm Conrad Roentgen in 1895, radiography has been an invaluable tool in the diagnosis and treatment of a wide range of medical conditions.

Radiography, also known as conventional radiology or X-ray radiography, is a medical technique that uses ionizing radiation to obtain images of the internal structures of the human body.

In the process, the patient stands in front of an imaging plate or detector while a device emits radiation through the area being examined. Different tissues in the body absorb different amounts of radiation, which generates images where bones, being denser, appear white, while soft tissues appear in shades of gray and air-filled areas, such as the lungs, appear black.

What are X-rays used for?

X-rays are used to diagnose a wide variety of conditions, both bone and soft tissue. Some of the main applications include:

• Diagnosis of fractures and bone injuries.

• Evaluation of lung problems such as pneumonia, lung cancer or tuberculosis.

• Dental examinations, such as detection of cavities, abscesses or problems in the dental roots.

• Screening for kidney stones and gallstones.

• Guidance for medical procedures, such as placement of catheters or visualization of foreign objects in the body.

Risks of X-rays

Although x-rays are a safe procedure, exposure to ionizing radiation involves certain risks. The radiation dose is low in most studies, but precautions should be taken in special situations, such as pregnant women, due to the potential risk to the fetus, and children, who are more sensitive to radiation.

Medical professionals should always assess whether the benefits of performing the X-ray outweigh these risks, and in many cases lower radiation or non-radiation alternatives, such as ultrasound or MRI, can be used.

Preparing for the X-ray

In most cases, no special preparation is required prior to an X-ray. However, some common indications include:

• Remove any jewelry or metal accessories, as they may interfere with the image.

• For certain studies, such as abdominal x-rays, the patient may be asked to avoid eating or drinking for a few hours before the procedure.

• If you are pregnant or suspect you may be pregnant, it is important to inform the technologist before the exam, as they may choose to use a different technique or adjust the radiation dose.

What does the exam feel like?

The x-ray procedure is completely painless and usually quick. In some cases, it may be necessary for the patient to hold a specific position for a few seconds to ensure a clear image, which may cause slight discomfort if the area is injured. The patient should remain still during imaging, as movement may affect the quality of the radiograph. Once completed, normal activities can be resumed immediately, as there are no side effects or recovery required after the exam.