A medical professional will advise you to undergo a CT scan chest contrast test with a proper prescription. It is used to visualise the lungs in all dimensions, and therefore individuals presenting with symptoms like chronic cough, breathlessness, fever may be advised by a Pulmonologist (lung doctor) to undergo a contrast chest CT scan to search deeper into a diagnosis. Patients diagnosed with Pneumonia, Interstitial lung disease, Lung cancer, Covid-19 may be advised on this test to analyse the prognosis of the disease. One must consider their symptoms carefully and consult a physician or pulmonologist before going ahead with any test.
Disclaimer: It is advised to always consult your doctor for interpreting the test reports.