Fig. 1
From: Longitudinal MRI evaluation of the efficacy of non-enhanced lung cancer brain metastases

Follow-up MR imaging characteristics of non-enhanced BM during treatment. Patient 1, Female, 57-year-old, invasive adenocarcinoma of left inferior lobe of lung. The patient underwent chemotherapy, targeted therapy, immunotherapy, radiotherapy and other comprehensive treatment. The figure shows axial enhanced T1-weighted MR image of left frontal lobe brain metastases. Patient 2, Male, 69-year-old, adenocarcinoma of left inferior lobe of lung. He was treated with chemotherapy, targeted therapy, radiotherapy and other comprehensive treatment. The figure shows the axial T2-weighted and enhanced T1-weighted MR image of the left cerebellar metastatic tumor. Patient 3, Female, 59-year-old, adenocarcinoma of right lung. She was treated with chemotherapy, immunotherapy, radiotherapy and other comprehensive treatment. The figure shows axial T2-weighted and enhanced T1-weighted MR images of the right parietal lobe metastasis. Patient 4, Male, 47-year-old, adenocarcinoma of upper lobe of left lung. He was treated with chemotherapy, radiotherapy and targeted therapy and other comprehensive treatment. The figure shows the axial T2-weighted and T1-weighted MRI images of right frontal lobe metastases. Note The follow-up time was marked in the upper right corner (Month), the MR scan sequence was marked in the lower left corner, and the red arrow showed the metastatic focus.