To lower mortality, the USPSTF advises LDCT examines for cancer of the lung screening in people at increased risk.They assess the possible risks and valuTo lower mortality, the USPSTF advises LDCT examines for cancer of the lung screening in people at increased risk.They assess the possible risks and value of screening tests to optimize benefits and reduce risks in the field of health care.e of screening tests to optimize benefits and reduce risks in the field of health care.