Ultrasound of the gastrointestinal system has become more popular among clinicians and is an important tool for evaluation and follow-up. Ultrasound has a special value in patients with Crohn's disease for the evaluation of disease activity but also for the evaluation of abdominal complications and shows comparable results to other imaging modalities. With the introduction of elastography and contrast-enhanced ultrasound into clinical routine, THE sonographic evaluation of the small bowel is even more sophisticated and even more precise. This case report summarizes all available modern ultrasound imaging technologies and highlights the possibilities in daily clinical use.