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Figure 1 | Radiation Oncology

Figure 1

From: Quantitative in vivo assessment of radiation injury of the liver using Gd-EOB-DTPA enhanced MRI: tolerance dose of small liver volumes

Figure 1

Illustration of CT guided brachytherapy and post interventional hepatic dysfunction in MRI. (a) Baseline MRI. T1-w GRE 20 minutes post i.v. application of Gd-EOB-DTPA. Colorectal liver metastasis in segment 6/7 (white arrow). (b) Contrast-enhanced computed tomography (CT) after CT-guided positioning of one brachytherapy catheter (truncated, black arrowhead) in the metastasis. The red line resembles the 15Gy isodose. (c) MRI 6 weeks after treatment. T1-w GRE 20 minutes post i.v. application of Gd-EOB-DTPA. Signal void around the tumor indicates hepatocyte dysfunction of liver parenchyma (black arrow). No evidence of tumor regrowth in (d): T1-w GRE dynamic scan 60s after application of the contrast dye shows shrinkage resulting from tumor necrosis after irradiation (black arrow).

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Radiation Oncology

ISSN: 1748-717X

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