radio button image change after checked

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XAML

WPF

MVVM

<StackPanel Name="StpAddDel" Orientation="Horizontal" HorizontalAlignment="Right" Margin="5">
                                <RadioButton Name="rdbactive" GroupName="actinact" VerticalAlignment="Center" Margin="5,0" Width="50" Height="15" Foreground="Blue">
                                    <RadioButton.Style>
                                        <Style TargetType="{x:Type RadioButton}">
                                            <Setter Property="Template">
                                                <Setter.Value>
                                                    <ControlTemplate TargetType="{x:Type RadioButton}">
                                                        <Grid>
                                                            <Image Source="c:\image.png" Width="32" Height="32"/>
                                                            <ContentPresenter/>
                                                        </Grid>
                                                    </ControlTemplate>
                                                </Setter.Value>
                                            </Setter>
                                        </Style>
                                    </RadioButton.Style>
                                </RadioButton>
                                <RadioButton Name="rdbinactive" GroupName="actinact" VerticalAlignment="Center" Margin="5,0" Width="60" Height="15" Foreground="Blue">
                                    <RadioButton.Style>
                                        <Style TargetType="{x:Type RadioButton}">
                                            <Setter Property="Template">
                                                <Setter.Value>
                                                    <ControlTemplate TargetType="{x:Type RadioButton}">
                                                        <Grid>
                                                            <Image Source="c:\image.png" Width="32" Height="32"/>
                                                            <ContentPresenter/>
                                                        </Grid>
                                                    </ControlTemplate>
                                                </Setter.Value>
                                            </Setter>
                                        </Style>
                                    </RadioButton.Style>
                                </RadioButton>
                                <Button Name="BtnAdd"  Height="20" Width="20" Margin="5,0" Template="{StaticResource AddImgBtnTemplate}" />
                                <Button Name="BtnDel" Height="20" Width="20" Margin="5,0" Template="{StaticResource DelImgBtnTemplate}" />
                            </StackPanel>

In the above code i have 2 radio button i put images on radio buttons , My requirement is i want to change the image of the radio button after it is checked, Please help me with this......