Experimental: E-Nose Technology

Patients undergo a breathprinting test (E-Nose) at baseline and at the first three standard of care follow-ups, as scheduled by their treating physician, that involve a CT of the Chest and/or PET/CT. The E-Nose testing will be administered by trained staff. Staff will use proper personal protective equipment during collections. Subjects will undergo E-Nose testing in a presurgical or interventional radiology suite. Subjects must consent to no smoking, no tooth brushing, and no food or drinks starting on midnight of the day of the E-Nose test. If fasting from midnight until the E-Nose test is not feasible, subjects may consent to fasting for 2 hours prior to each E-Nose test. Subjects opting to fast for 2 hours before each E-Nose test can only have still, non-carbonated water and non-aromatic foods or foods that do not develop aromatic compounds, such as low salt simple crackers, starting at midnight on the day of the E-Nose test until 2 hours before the collection.