RESUMO
The authors have now instituted the paddle-wheel method of CT reconstruction imaging of the lungs as a routine supplement to the standard axial multislice helical CT pulmonary angiography images for pulmonary embolism, and are exploring its role in other diseases. This unique way of viewing lung structures adds a new dimension to pulmonary imaging. Large-scale comparison studies of the traditional and the proposed paddle-wheel CT display method are necessary to quantitate their relative clinical effectiveness in the evaluation of the pulmonary vasculature, airways, and lungs.
Assuntos
Pneumopatias/diagnóstico por imagem , Pulmão/anatomia & histologia , Pulmão/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Humanos , Processamento de Imagem Assistida por Computador , Imageamento Tridimensional , Pulmão/irrigação sanguínea , Artéria Pulmonar/diagnóstico por imagem , Circulação Pulmonar , Radiografia TorácicaRESUMO
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.