Dynamic Perfusion Computed Tomography in Patients With Localized Non-small Cell Lung Cancer

Inclusion Criteria: * Biopsy proven non-small cell lung cancer * Minimum tumor dimension \>= 1 cm (preferably \>= 2 cm) * No clinical evidence of nodal disease (N1-N3) as assessed by CT and/or positron emission tomography (PET)/CT * Zubrod performance status 0-2 * Women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, and for 90 days following completion of therapy; should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately * A female of child-bearing potential is any woman (regardless of sexual orientation, having undergone a tubal ligation, or remaining celibate by choice) who meets the following criteria: * Has not undergone a hysterectomy or bilateral oophorectomy; or * Has not been naturally postmenopausal for at least 12 consecutive months (i.e., has had menses at any time in the preceding 12 consecutive months) * No prior radiation to the same area * No concurrent chemotherapy * Evaluated by radiation oncologist to be appropriate SBRT candidate and scheduled to undergo SBRT as part of their care * Ability to understand and the willingness to sign a written informed consent Exclusion Criteria: * Patients with tumors \< 1 cm * Patients with nodal disease or distant metastatic disease * Patients may not be receiving any other …