WPF为图片添加倒圆角

//把图片设置为Border的背景
<Grid Width="973" Height="688">
        <Border Name="Image_Game" Width="973" Height="688" BorderBrush="#FF2B9EC5" BorderThickness="4" CornerRadius="10">
            <Border.Background>
                <ImageBrush ImageSource="GameImage/10001.png" />
            </Border.Background>
        </Border>
    </Grid>