Plain film of abdomen

Abdominal photographs taken without the introduction of any radiography are called plain radiographs. The density of organs in the abdominal cavity belongs to the density of soft tissues, which lacks natural contrast. However, when a certain organ is calcified due to a disease or there is a foreign body or stone that is impervious to X-rays, or there is free gas in the abdominal cavity, and there is an increase in gas and fluid in the intestinal cavity or an expansion of the intestinal tract, the density will appear The difference is shown on the photo. In addition, under normal circumstances, the fat layer of the abdominal wall, the fat layer around the kidneys and the psoas muscle shadow can also be displayed on the picture. Flat abdominal films include anterior and posterior positions, erect lateral positions, supine anterior and posterior positions, lateral horizontal positions, and supine horizontal lateral positions. The upright anterior and posterior positions can show the free gas below the diaphragm, the fluid level of the intestine or abdominal cavity, and the gas-liquid level of intrahepatic or abdominal abscesses. The upright lateral position is suitable for the positioning of intra-abdominal masses, abscesses, calcifications, and stones. Intestinal obstruction in infants, the small intestine and colon are not easy to distinguish, and this position can be used to identify. The supine and anterior positions clearly show the distribution of dilated bowel curvature, the extent of dilation, and the distance between the bowel walls. The supine horizontal position is suitable for patients who are critically ill and cannot stand, but need to know whether there is free gas in the abdominal cavity or intestinal fluid level and whether there is fluid accumulation in the abdominal cavity. The supine horizontal side position is suitable for patients who are not critical to turn over. It can display a small amount of pneumoperitoneum and intestinal gas-liquid plane, and can also determine the location of abscesses.

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