Contrast agents are often used in some imaging diagnostic methods such as: X-ray, CT to help improve images, distinguish between normal and pathological images or help narrow down the diagnosis based on the contrast agent absorption characteristics of normal and pathological tissues. So when is it necessary to use contrast agents?

Computed tomography (CT scan) is a noninvasive diagnostic imaging procedure that uses a combination of X-rays and computer technology to create cross-sectional images (often called slices) of the body.

Magnetic resonance imaging (MRI) of the female pelvis or female pelvis is an imaging method that uses magnetic fields, radio waves, and a computer to create detailed images of the pelvic organs. It can be used to diagnose or monitor treatment for a variety of pelvic conditions.

Contrast-enhanced abdominal ultrasound (CEUS) combines abdominal and pelvic ultrasound with a special intravenous contrast agent to improve images of blood vessels and organs. This ultrasound technique helps doctors see abnormalities in organs or blood vessels. Similar contrast agents have been used to better evaluate the heart for many years.

Computed tomography is considered a breakthrough in medical science and technology in diagnostic imaging, providing effective support for doctors in the process of diagnosing and predicting diseases, thereby being able to screen early for cardiovascular diseases, cancer, etc. So what is computed tomography? The article will help readers better understand the technique of tomography.