Radio columns look better and are easier to use than radio rows.
Radio rows are appropriate only when they contain a small number of buttons (usually, two to four) or if the labels are short. If an option selected elsewhere makes the choices in the radio row or radio column invalid or irrelevant, then disable the whole row or column. In some situations, an option selected elsewhere may make certain radio buttons invalid or irrelevant. In situations like this, you can disable buttons individually.