The current edition of the book has been designed to include current recommendations, guidelines, and existing knowledge on the subject. The content of all chapters has been updated, while some have been significantly restructured. Four new chapters have also been added covering most recent advances as well as areas which are very critical for a paediatric radiologist but which were not included in the previous edition. It is our earnest hope that our readers will find this greatly updated text highly informative and that it will aid in their learning process and daily Practice.