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Symposium on therapeutic intervention in nuclear medicine--an introduction.

The term `interventional radiology' was introduced to describe procedures that were in some way therapeutic or curative rather than purely diagnostic (L: interventio The action or an act of coming between or interfering so as to modify or prevent a result [1]). However, the term has now become an umbrella description for all types of procedures that are invasive, or surgical, which serve a therapeutic or diagnostic function. These procedures, though invasive, are meant to replace much more extensive surgery and have found their place amongst current surgical procedures. Interventional procedures in clinical radiology include: