1.Pregnancy and lactating mother <br/ >2.Prior thoracic radiation or chemotherapy with potential for pulmonary toxicity <br/ >3.Prior or planned treatment with interleukin inhibitors or TNF-α inhibitors <br/ >4.History of collagen vascular disease <br/ >5.Chronic lung diseases (Chronic obstructive lung disease, bronchial asthma), history of pulmonary tuberculosis <br/ >6.Inability to lie in supine on a flat couch with oxygen supplementation for radiation planning and delivery <br/ >7.Patients with PaO2/FiO2 <100 (severe ARDS) and/or on mechanical ventilation <br/ >8.Patients who are not willing to participate in the study <br/ >

1.Pregnancy and lactating mother <br/ >2.Prior thoracic radiation or chemotherapy with potential for pulmonary toxicity <br/ >3.Prior or planned treatment with interleukin inhibitors or TNF-α inhibitors <br/ >4.History of collagen vascular disease <br/ >5.Chronic lung diseases (Chronic obstructive lung disease, bronchial asthma), history of pulmonary tuberculosis <br/ >6.Inability to lie in supine on a flat couch with oxygen supplementation for radiation planning and delivery <br/ >7.Patients with PaO2/FiO2 <100 (severe ARDS) and/or on mechanical ventilation <br/ >8.Patients who are not willing to participate in the study <br/ >

N/A

N/A

1.Pregnancy and lactating mother <br/ >2.Prior thoracic radiation or chemotherapy with potential for pulmonary toxicity <br/ >3.Prior or planned treatment with interleukin inhibitors or TNF-α inhibitors <br/ >4.History of collagen vascular disease <br/ >5.Chronic lung diseases (Chronic obstructive lung disease, bronchial asthma), history of pulmonary tuberculosis <br/ >6.Inability to lie in supine on a flat couch with oxygen supplementation for radiation planning and delivery <br/ >7.Patients with PaO2/FiO2 <100 (severe ARDS) and/or on mechanical ventilation <br/ >8.Patients who are not willing to participate in the study <br/ >

1.Pregnancy and lactating mother <br/ >2.Prior thoracic radiation or chemotherapy with potential for pulmonary toxicity <br/ >3.Prior or planned treatment with interleukin inhibitors or TNF-α inhibitors <br/ >4.History of collagen vascular disease <br/ >5.Chronic lung diseases (Chronic obstructive lung disease, bronchial asthma), history of pulmonary tuberculosis <br/ >6.Inability to lie in supine on a flat couch with oxygen supplementation for radiation planning and delivery <br/ >7.Patients with PaO2/FiO2 <100 (severe ARDS) and/or on mechanical ventilation <br/ >8.Patients who are not willing to participate in the study <br/ >