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Published online before print June 20, 2003, 10.1148/radiol.2282020088
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(Radiology 2003;228:577-582.)
© RSNA, 2003

Technical Developments

Detection of Pulmonary Embolism: Comparison of Paddlewheel and Coronal CT Reformations—Initial Experience1

Eric E. Chiang, MD, Phillip M. Boiselle, MD, Vassilios Raptopoulos, MD, Kevin F. Reynolds, BS, RT, Max P. Rosen, MD, MPH and Morris Simon, MD

1 From the Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215. From the 2001 RSNA scientific assembly. Received February 12, 2002; revision requested April 17; final revision received October 28; accepted November 25. Address correspondence to P.M.B. (e-mail: pboisell@caregroup.harvard.edu).

In five patients with acute multilobar pulmonary embolism (PE) who were imaged with multi–detector row CT angiography, maximum intensity projection images were reformatted from axial images into rotated paddlewheel and coronal planes with three slab thicknesses and were reviewed for evidence of PE on a per-vessel basis with consensus of two readers. Paddlewheel reformations had a significantly higher percentage of overall detection of PE than did coronal reformations obtained with equivalent slab thickness (P < .0001). Paddlewheel reformations with 5.0-mm slab thickness had no significantly different percentage of overall detection of PE compared with that of axial images obtained with 2.5-mm collimation.

© RSNA, 2003

Index terms: Computed tomography (CT), angiography, 60.12116 • Computed tomography (CT), maximum intensity projection, 60.12119 • Computed tomography (CT), multi–detector row, 60.12119 • Embolism, pulmonary, 60.72 • Pulmonary arteries, CT, 60.12116




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