ressonancia magnetica com contraste o que é Ressonância magnética com contraste: como é feita e preparo

If you find yourself in need of a medical imaging exam, you may come across two commonly used procedures: Tomography and Magnetic Resonance Imaging (MRI). While both techniques are designed to provide detailed images of internal organs, bones, and tissues, they are different in how they work and what they are used for.

Tomography

Tomography, also known as Computed Tomography (CT scan), uses X-rays to create cross-sectional images of various body parts. The X-ray machine rotates around the body, emitting small amounts of radiation that are captured by detectors. A computer processes the data and generates a detailed image of the area being scanned.

Tomography is often used to diagnose fractures, tumors, and infections in the bones, lungs, and abdomen. It is also used to detect cancer and for guidance during biopsies and surgeries.

Magnetic Resonance Imaging (MRI)

MRI, on the other hand, uses a powerful magnetic field and radio waves to create detailed images of internal organs, bones, and tissues. The patient lies on a table that slides into a tube-like machine where the imaging takes place. The magnetic field temporarily realigns the water molecules in the body, and the radio waves then cause these molecules to emit signals that are captured by a receiver and processed by a computer to generate the image.

MRI is often used to detect soft tissue injuries, such as ligament tears and bulging discs, as well as brain and spinal cord abnormalities. It is also used to monitor the progress of diseases, such as Multiple Sclerosis and cancer.

Both Tomography and MRI are non-invasive procedures that do not involve any radiation exposure or injections. However, MRI can be uncomfortable for some patients who suffer from claustrophobia or are unable to lie still for an extended period. Additionally, Tomography exposes patients to small amounts of radiation and therefore should not be used frequently unless necessary.

It is essential to consult with your healthcare provider to determine which imaging procedure is best suited for your specific needs. Your healthcare provider will take into account your medical history, the area being examined, and any potential risks or allergies you may have.

Overall, Tomography and MRI are excellent imaging procedures that provide accurate and detailed images of internal organs, bones, and tissues. Understanding the differences between the two can help you make an informed decision and ease any apprehensions you may have about the procedure.

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