Foetal cardiology has developed dramatically into a subspecialty in the past 25 years. The majority of people examining the foetal heart are not 'experts' in foetal cardiology and therefore find interpreting images, particularly in case of abnormality, rather difficult. This book is designed as a practical guide, to be kept near the ultrasound machine, for all those performing foetal heart scans, but without the expertise of a foetal cardiologist. The aim is to allow the user to recognise the common forms of foetal cardiac abnormality and to appreciate the associated lesions and outcome. The book has a large number of illustrations to enable the reader to visualise the different types of problem and the various forms in which they may manifest. There are relatively few books published in the field of foetal cardiology. Whilst there is a place for large textbooks covering all aspects of foetal cardiology in detail, most people performing the foetal heart scan need an idiot's guide about the normal foetal heart and the common things that go wrong with it. This book is aimed at all sonographers, obstetricians and radiologists performing obstetric ultrasound scans and at paediatric cardiologists, both at consultant and trainee level. Thus, this book should fulfil this unmet need in the market, although it is not designed as a comprehensive reference textbook in foetal cardiology.