[Enhanced accuracy of the X-ray diagnosis of acute abdomen with patient in the supine (pregnancy standard) position].

The value of exposed to vertical central ray supine (dorsal decubitus or pregnancy standard) plain films was determined in this retrospective study in diagnosing pneumoperitoneum based on comparing of exposed to horizontal X-ray beam abdominal radiographs in 54 patients associated with perforation of hollow viscus (48 stomachs or duodenums of them). Until the anteroposterior erect or sitting and semi-recumbent positioning views moreover laterolateal supine and posteroanterior left lateral projections were negative in all cases, then in 24 of 54 subjects free intraperitoneal gas collections as spotted radiolucencies were detected inside the right upper quadrant of abdomen on pregnancy standard dorsal aspects. The orientation of gas to left upper abdominal quadrant was noted in additional 2 cases. The 18 of 26 perforations were not proceeded to free intraperitoneal space. The pregnancy standard plain film is a sensitive technique for visualisation of pneumoperitoneum after perforation of the hollow viscus between 3-6th penetration hours just as in unable to cooperation patients, particularly.