Gastroenterology is the branch of medicine concerned with the diagnosis, treatment and prevention of diseases of the digestive system, including the oesophagus, stomach, intestines, liver, pancreas and bile ducts. Specialists in this field, known as gastroenterologists, use a variety of diagnostic methods such as endoscopy, colonoscopy, ultrasound, CT scans and MRIs to detect and treat conditions such as ulcers, inflammatory bowel disease, gastrointestinal cancer, liver disease and many others. Gastroenterology plays a key role in improving the health and quality of life of patients by providing effective treatment and education on healthy lifestyle and diet.