MRI has not been used to examine the lungs because MRI is a hydrogen proton imaging and the lungs are low in hydrogen protons due to the large amount of gas they contain. However, if there are large nodules or masses in the lungs, MRI can be performed for further observation and analysis. In conclusion, lung examination is still based on CT, if necessary, magnetic resonance examination is also a better means of examination, can meet the needs of patients with lung lesions, to make a more accurate and reliable diagnosis of the patient’s imaging results.