Lower gastrointestinal bleeding: Role of 64-row computed tomographic angiography in diagnosis and therapeutic planning

Table 1 Summary of 64-row computed tomographic angiography findings according to anatomic location

Location	Acute lower GI bleeding present1 (n = 60)		Acute lower GI bleedingabsent (n = 192)
	True-positive findings	False-negative findings	True-negative findings	False-positive findings
Jejunum	15	1	47	0
Ileum	29	2	32	0
Colon	12	0	51	0
Rectum	1	0	62	0
Total (n = 252)	57	3	192	0

¹According to the results of conventional angiography or surgery. Data are the numbers of anatomic locations. GI: Gastrointestinal.