الفهرس Only 14 pages are availabe for public view
 |  | from | 201 |  |  |
| | | from | 201 | | |
Abstract
Hepatic focal lesions are frequently reported during imaging evaluation of the abdomen. Many of these lesions represent a diagnostic dilemma for the clinician. These lesions occur in symptomatic or asymptomatic patients with or without preexisting liver disease (Molina & Schiff, 1999).
Detection and characterization of all hepatic focal lesions are critical especially in patients with liver cirrhosis, as those patients are at high risk to develop hepatocellular carcinoma (Lemoine et al., 1999).
In cirrhotic liver, heterogeneous enhancement caused by fibrosis and regeneration makes it difficult to detect underlying neoplasia and so, conventional computed tomograghy (CT) has been relatively insensitive for detection of neoplasm in cirrhotic liver (Miller et al., 1994).
Triphasic spiral CT is an excellent technique in detection and evaluation of hepatic focal lesions, because it provides:
(1) Rapid liver scanning in 20-30 seconds, thus improving lesion detection and characterization by maximizing differences in attenuation between normal liver and any focal lesion. This will likely improve tumor detection in patients with cirrhosis (Urban & Fishman, 1998).