The stomach

Abstract

Cross-sectional imaging of the stomach is an important tool in the diagnosis of gastric pathology, which complements or replaces evaluation with endoscopy and fluoroscopy. Because of its widespread use, CT may detect gastric pathology incidentally. CT is also the modality of choice for staging and postoperative follow-up of gastric neoplastic disease. Although less commonly used, MR imaging offers excellent tissue contrast when properly done. Functional modalities, such as PET, can also be a powerful tool in evaluating neoplastic disease of the stomach locally, regionally, and distally. Finally, when properly performed, a directed ultrasound can serve as an adjunct modality for evaluation of the stomach.