Diagnostic imaging services use various technologies to produce images of internal body parts for disease diagnosis. These include transmission imaging (radiography and CT), reflection imaging (ultrasound), and nuclear emission imaging (MRI and PET).
Diagnostic imaging services are used to produce images of internal parts of the body. These images are used to diagnose diseases, such as cancer or abnormalities in body structure. Diagnostic imaging falls under transmission, reflection, or nuclear emission imaging and relies on the medical technology and equipment used to create the image.
Diagnostic imaging services that use transmission imaging include radiography and computed tomography (CT). X-rays are captured by passing an electromagnetic beam through the body to produce the image. The bones will be white and the muscles grey. All other tissues and organs will appear as dark spaces.
A CT scan is a medical imaging process that uses X-rays and computers to show cross-sections or slices of data. The data provides a more detailed picture of the body than an X-ray alone. These diagnostic imaging services are often used to discover brain lesions or tumors and can also be used to examine other internal organs.
Reflection imaging is produced when high-frequency sound waves are sent through the body. Sound waves bounce off tissues and organs at different speeds based on tissue density and are monitored by computer programs. The sound waves are then put together to form a visual image.
Ultrasound imaging, also known as ultrasound imaging, is a well-known type of reflection imaging. Typically used to view images of unborn fetuses, ultrasound can also be used to detect liver or kidney tumors. Diagnostic imaging services that use sonograms can determine if there are blockages in blood flow and if reduced organ function is a problem.
Magnetic resonance imaging (MRI) is a type of nuclear emission imaging that involves magnetizing protons in the body’s water molecules through a scanner. The result is a high-contrast, high-resolution image showing potential problems in organs and soft tissue. Nuclear imaging is particularly useful for identifying problems with blood flow and the heart.
Another of the diagnostic imaging services that uses nuclear emissions imaging is positron emission tomography (PET). A small amount of radioactive material, called a radiopharmaceutical, is injected or ingested by the patient and then travels to the organs. When the material breaks down, it emits gamma rays. PET scanning can detect gamma ray emissions and convert the data into a computer image. The image is used to understand changes in both function and structure of an organ, which can confirm irregularities.
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