Machines and People: Who and What Are Important?

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Abstract
In the past decade, a startling revolution has occurred in diagnostic radiology with the introduction of highly sophisticated (and expensive) imaging equipment and the development of at least one new discipline. These additions include ultrasonography (US), computed tomography (CT), computed digital radiography, positron emission tomography, single-photon emission computed tomography, and, most recently, imaging with magnetic resonance (MR). The new discipline is interventional radiology in various anatomical sites (eg, angioplasty of coronary arteries, embolization by catheter of intracranial arteriovenous malformations). Information gained from these various developments has proved to be priceless. Definitive diagnoses are now possible in areas not even remotely envisioned in the past. Many examples abound, including, the diagnosis of fetal abnormalities in utero (by US) and myocardial infarcts (by MR). Thus, the newly acquired diagnostic skills of the radiologist have virtually changed the face of radiology and even the practice of medicine. Certain questions intrude, however: What is

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