Get Selected Radio Button in a Group (WPF)

I have a ItemsControl in my program that contains a list of radio buttons.

<ItemsControl ItemsSource="{Binding Insertions}">
        <ItemsControl.ItemTemplate>
            <DataTemplate>
                <Grid>
                    <RadioButton GroupName="Insertions"/>
                </Grid>
            </DataTemplate>
        </ItemsControl.ItemTemplate>
    </ItemsControl>

How do I find the selected radio button in the group Insertions in a MVVM manner?

Most of the examples I have found on the internet involve setting individual boolean properties that you bind the IsChecked property to with the help of a converter.

Is there an equivalent of the ListBox SelectedItem that I can bind to?