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Previous Volume 354:2383-2385 June 1, 2006 Number 22 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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Sixteen years ago, the results of the Prospective Investigation of Pulmonary Embolism Diagnosis (PIOPED) study¹ were published. That large-scale, multicenter trial definitively established the diagnostic characteristics of ventilation–perfusion scintigraphy of the lung, as compared with pulmonary angiography, for the diagnosis of pulmonary embolism. It was also the first trial to provide direct evidence that clinical assessment has a role beyond merely evoking pulmonary embolism as a diagnostic possibility and allows for the stratification of patients into three pretest categories of probability corresponding to an increasing prevalence of pulmonary embolism.

As reported by Stein et al. in this issue of the . . . [Full Text of this Article]

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From the Divisions of General Internal Medicine (A.P.) and Angiology and Hemostasis (H.B.), Department of Internal Medicine, Geneva University Hospital and Geneva Faculty of Medicine, Geneva.

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