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Figure 4 | Radiation Oncology

Figure 4

From: Value of diffusion weighted MR imaging as an early surrogate parameter for evaluation of tumor response to high-dose-rate brachytherapy of colorectal liver metastases

Figure 4

Follow-up MRI. DWI (A) and ADC map (B) performed 105 days post intervention (same patient as in Figure 1) show a rise of mean tumor ADC of 75.2% to 2.26 × 10-3 mm2s-1 (arrow). This finding correlates with a decrease in tumor volume by 90.6% (2.2 cm3), depicted in T1w Gd-EOB-DTPA enhanced MR image in hepatobiliary phase (C). The circular hypointense region around the treated lesion in (C) indicates the area of irradiation induced reversible hepatocyte dysfunction.

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