If you undergo surgery, as part of your standard care, you will also return to the clinic for standard tests to check your lung function 4-12 weeks and 4-12 months after your surgery. Researchers will compare your pre-surgery test results (both the standard test results and the VRI results) with the results of the tests after surgery (standard tests) to learn the level of accuracy of the VRI system in predicting how the lungs will function after surgery.