New AI-powered blood test could reveal lung cancer without a CT scan

A team of scientists in the United States has developed a blood test that uses machine learning to hunt for the telltale signs of lung cancer. The system, which is still early in its development, could eventually replace CT scans as a first-line screening measure for suspected lung cancer patients. The test hunts for tumor DNA that is circulating in a person's blood, and is far less expensive than CT scans which are typically used to diagnose lung cancer. It's not yet ready to be used on a widespread basis or relied upon in real-world settings, but the research is incredibly promising and could prove to be a powerful weapon against one of the deadliest types of cancer. Medical researchers and doctors already know that cancer DNA circulating in a patient's bloodstream could serve as a tool for diagnosing the disease.