COMPUTED tomography (CT) of the body (excluding the head and neck) has become a well-established, important, and sometimes crucial noninvasive imaging examination. Once regarded as a paradigm of high-cost technology of unproved value,1 CT has evolved as a versatile and widely accepted medical resource. Now disseminated throughout larger health-care facilities in the Western world, CT has challenged the medical community to make wise and economical use of a valuable but expensive resource. This article will review the present status of CT technology and advances in clinical applications of body CT that have occurred since an initial review in the Journal . . .