Intravenous Contrast Agent in Abdominal CT: Is It Really Needed to Identify the Cause of Bowel Obstruction? Proof of Concept

Table 1

Etiology and location of bowel obstruction in the study population.

	Small bowel obstruction; 11 patients	Large bowel obstruction; 7 patients
Etiology, (%)	5 (45) adhesions	6 (86) tumors
	2 (18) incisional hernia
	2 (18) volvulus	1 (14) adhesions
	1 (9) tumor
	1 (9) retroperitoneal neoplasm