Correlation Analysis between Retention of Gd-DTPA in the Cystic Area of Brain Metastasis and MRI Signs

Figure 1

Contrast signal intensity (CSI) differences in the three scanning times. A–C show plain scan T1WI images of the craniocerebral axial position, enhanced scan T1WI, and enhanced plain scan, respectively. The BM cystic area in the left parietal-occipital lobe showed a low signal during the plain scan and enhanced scan, and the signal intensity increased significantly in the enhanced plain scan. D–G show plain scan T1WI images of the craniocerebral axial position, enhanced scan T1WI, enhanced plain scan, and SWI, respectively. The BM cystic area in the right frontal-parietal lobe showed a low signal during the plain scan and enhanced scan, and the signal intensity increased in the enhanced plain scan. Magnetic-sensitive low signals were not observed in the SWI scans to exclude bleeding.

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