Which part of the stomach is associated with the gastric bubble?

The fundus of the stomach is the uppermost portion that lies above the level of the gastroesophageal junction. It is typically filled with gas, which is why it is referred to in relation to the gastric bubble. This area serves as a reservoir for food and gas, which is why radiographically, the fundus often appears as an area of low density on an imaging study, reflecting the presence of the gastric bubble.

The other parts of the stomach, such as the antrum, body, and pylorus, do not typically contain significant amounts of gas under normal conditions, which makes the fundus the most relevant area when discussing the gastric bubble in imaging contexts. The fundus plays a crucial role in both digestion and the mechanical aspects of gastric function, and its recognition is important in both clinical practice and imaging interpretation.