Chest CT Scan: Purpose, Procedure, and Benefits

A chest CT scan is a specialized diagnostic test that is recommended to evaluate the lungs, Airways, vessels, and other structures. Also known as a chest Computed Tomography, the diagnostic tool makes use of X-ray beams and a computer to capture images of the thoracic region. CT scans visualize the thoracic area more clearly as compared to a conventional chest X-ray.

A physician may recommend a chest CT to view lung problems, chest infections, to view abnormal lung nodules or to view chest injuries. Knowing about the chest CT scan procedure and benefits can help in preparing for this test. Molecular Diagnostics and Therapy provides diagnostic imaging services to view the condition of the patient and detect abnormalities.

What Is a Chest CT Scan?

A chest CT scan allows the physician to visualize the lungs, heart structures, vessels, Airways, ribs, and other tissues. The scanner captures a slice of the chest to visualize whether there are any irregularities and abnormalities in the region. Contrast medium may be administered during the scan for certain investigations. Contrast-enhanced CT scans help to obtain visualization of the blood vessels, heart structures, and certain irregularities. Non-contrast CT scans are helpful for many chest investigations. Chest CT scans may be with or without contrast depending on the symptoms and diagnostic information required.

What Is the Purpose of a Chest CT Scan?

The primary purpose of a chest CT scan is to investigate symptoms and abnormalities affecting the lungs and chest. A physician may recommend the procedure when a patient reports a persistent cough, has difficulty breathing, or has an abnormal chest X-ray. The diagnostic scan visualizes pneumonia, lung nodules, tumours, lung scarring, and irregularity of other lung structures. The procedure is also recommended for suspected lung disease or conditions occurring due to chest injury.

Particular CT techniques can be employed to view certain abnormalities. For instance, a high-resolution CT scan may be recommended to view certain lung diseases, and CT pulmonary angiography visualizes the blood vessels of the lungs. The latter technique is indicated if a pulmonary embolism is suspected. CT imaging helps to evaluate the extent of the disease process in patients with existing lung conditions. Interpreting CT results also requires correlating with the presenting symptoms and history of the disease and other diagnostic information.

What Is the Chest CT Scan Procedure?

The chest CT scan procedure is usually simple and completed within a short time. The preparation and length of the procedure vary depending on the type of examination and use of contrast medium.

Before the Scan

The medical staff may ask about the patient’s symptoms, current health condition, and the use of any medication, allergies, or previous adverse reactions to contrast medium in the past. The patient may be asked about a history of kidney disease or pregnancy. A particular preparation procedure may not be required for some chest CT scans. However, patients may be asked to fast for a certain period before the procedure. Following the instructions provided by the radiology staff is essential. Patients may be asked to remove accessories and metallic objects that may interfere with the imaging process.

During the Scan

The patient will lie on a movable examination table, which slides into the CT scanner. The machine consists of a ring-like structure. The table slides through the ring as a scanner rotates around the patient, taking a series of X-ray images of the chest region. The patient may be asked to hold their breath for a few seconds to get clear images. Sometimes, a contrast medium may be administered through a thin plastic tube (IV catheter) into a vein to see blood vessels and heart structures. You may feel warm or have a strange taste in your mouth once the contrast fluid is administered. It is a painless procedure. However, you need to lie still and follow the instructions given by the technologist to get accurate pictures.

After the Scan

The patient can immediately return to normal activities unless advised otherwise. If contrast medium was used, you may be asked to drink plenty of fluids and watch out for delayed reactions. The pictures obtained during the scan will be evaluated by a radiologist and the results will be sent to the physician who referred the patient for the test. The time taken for the test will depend upon the type of examination and the centre where the test is conducted.

What Are the Benefits of a Chest CT Scan?

One of the primary benefits of a chest CT scan is its ability to capture clear images of the lung tissue. It helps detect lung nodules, infections, structural irregularities of the lungs, tumors, and chest injuries. It also helps to view the location of an abnormal mass, which helps to make a decision regarding further diagnostic procedures. Another benefit is the speed of the CT scan, which is vital in many emergencies.

Selective scans can be employed to get information regarding particular lung tissue or vessels. However, a CT scan is not always enough to give a conclusion regarding the diagnosis. Based on the results, the physician may recommend additional tests such as blood tests, lung function tests, or a biopsy procedure.

Conclusion

The price of a chest CT scan depends upon the type of examination, use of contrast medium, and procedure complexity. A contrast-enhanced scan or CT pulmonary angiography usually costs more than a standard non-contrast chest CT. The cost depends upon the diagnostic center and other factors.

Confirming the price of the procedure with the center is essential. Molecular Diagnostics and Therapy can provide more information about the cost of the chest CT scan recommended by the physician. Besides, one has to mention the name of the test to get correct instructions about the preparation from the receptionist.