A computed tomography (CT) scan is an effective diagnostic technique for identifying various illnesses and other health conditions. It creates a 3D picture of visceral organs, bones, muscles and blood vessels to reveal the internal condition of the body. CT is a quick, easy technique for a healthcare professional to examine diseases. A CT scan may be performed at a clinic or imaging center. Let us closely understand what is a CT scan, how is it performed, its relevance in medical science and many more.

Why is computed tomography performed?
A doctor may recommend a CT scan to serve a variety of purposes, but it is especially useful for detecting illnesses and assessing internal damage to different parts of the body which is externally not evident. The imaging approach can assist the doctor in the following ways:
•    Allergies, muscular problems, and broken bones are all diagnosed.
•    Localize lumps and tumors, particularly malignancy.
•    Investigate the blood arteries and other interior organs.
•    Determine the degree of internal damage and hemorrhage.
•    For evaluation of the efficacy of various treatments such as that for cardiovascular disorders.
It is a noninvasive procedure which takes only a few minutes to complete.

What Are the Consequences of a CT scan?

Radioactivity: Patients are temporarily exposed to ionizing radiation during a CT scan. Since the CT scan captures more precise information, the quantity of radiation received by the patient is larger than that received during a standard X-ray. Low amounts of radiation used in CT scans have not been demonstrated to induce long-term damage, however much greater quantities may result in a slight elevation in the possible risk of cancer.

Unborn infants are harmed: Inform the doctor whether the patient is pregnant. Whereas the radioactivity from a CT scan is improbable to harm the child, the doctor may advise another sort of check, including an ultrasonography or an MRI, to prevent exposing the infant to radioactivity. Humans have shown no detrimental consequences from the tiny levels of radiation used in CT imaging.

Observed responses to contrast medium: In some situations, the doctor may advise the patient to use a particular dye known as contrast medium. This can be anything that the patient is instructed to consume before the CT scan, and something that is injected into the rectal artery through a vein in the forearm. Although it is uncommon, the contrast substance can induce medical issues or allergy symptoms. The majority of responses are modest, resulting as redness or itching. An adverse response can be significant, even fatal, in rare cases. Inform the doctor if the client has ever had an allergic response to contrast medium.

What occurs during the examination?
During the procedure, the patient will be lying on his or her back on a bench. A healthcare professional may insert the contrast material directly into the veins if the patient's test necessitates it. This dye may cause the patient to flush or have a bitter aftertaste in their mouth. When the scan starts:
•    The bed is gradually lowered inside the doughnut-shaped scanning. At this time, the patient must remain as motionless as feasible because movement might generate hazy visuals.
•    The scanner photographs the region that the healthcare practitioner needs to view.

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What is CT scan