When to go for CT scan amid Covid? Answers Dr Arvind Kumar of Medanta Hospital

After Randeep Guleria requested people from refraining to go for CT Scans without a doctor's prescription we've asked all your burning questions to Dr Arvind Kumar of Medanta Hospital 

The CT scans being used to detect Covid infections by detecting signs of pneumonia or white patches in lungs as reports suggest the mutant variants of the virus can go undetected in the gold standard RT-PCR test.