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Eur Respir J 2001; 18:381-392
Copyright ©ERS Journals Ltd 2001

Virtual tools for imaging of the thorax

G.R. Ferretti, I. Bricault and M. Coulomb

Dept of Radiology, Hôpital Michallon, Centre Hospitalier Universitaire, Grenoble Cedex 09, France

CORRESPONDENCE: G.R. Ferretti, Service Central de Radiologie et Imagerie Médicale, Centre Hospitalier Universitaire, Grenoble BP 217, F-38043, Grenoble cedex 09, France. Fax: 33 476765901

Keywords: Computed tomography, helical computed tomography, maximum intensity projection, minimum intensity projection, virtual rendering, volume rendering

Received: October 10, 2000
Accepted February 21, 2001

Abstract

Helical computed tomography (HCT) allows for volume acquisition of the entire thorax during a single apnoea. Combination of HCT acquisition with synchronous vascular enhancement gives rise to HCT angiography (HCTA).

In the last decade, HCT and HCTA have revolutionized the diagnosis of thoracic diseases, modifying many diagnostic algorithms. Because HCT provides for a true volume acquisition free of respiratory misregistration, three-dimensional (3D) rendering techniques can be applied to HCT acquisitions.

As these 3D rendering techniques present the HCT information in a different format to the conventional transaxial CT slices, they can be summarized as virtual tools.

The purpose of this review is to give the readers the most important technical aspects of virtual tools, to report their application to the thorax, to answer clinical and scientific questions, and to stress their importance for patient management, clinical decision making, and research.




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