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Abstract
The development of cross-sectional imaging has had a tremendous impact on the diagnosis and treatment of acute abdomen (Siewert et al, 1997).
In particular, computed tomography (CT) has gained widespread acceptance as a reliable and highly accurate modality in the evaluation of affected patients (Nemceck, 1989).
The introduction of helical CT technology, with advances in contrast dynamics and high-resolution volumetric data acquisition, has further enhanced the utility of CT in abdominal imaging (Zeman et al, 1993).
Many traditional emergency imaging procedures have been replaced with newer helical CT techniques that can be performed in less time and with greater accuracy, less patient discomfort, and decreased cost. The speed of helical technology permits CT examination of seriously ill patients in the emergency department, as well as patients who might not have been taken to CT previously because of the length of examinations of the past. Higher quality CT examinations result from decreased respiratory misregistration, enhanced intravenous contrast material opacification of vascular structures and parenchymal organs, greater flexibility in image reconstruction, and improved multi-planar and three dimensional reformations. These applications enhanced the role of CT diagnosis of acute conditions of the abdomen, such as abdominal trauma, urinary stones; appendicitis; diverticulitis; and abdominal aortic aneurysms (Novelline et al, 1999).