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Simultaneous acquisition of multiple resolution images for dynamic contrast enhanced imaging of the breast.
Authors:H K Song  L Dougherty  M D Schnall
Affiliation:Department of Radiology, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104, USA. hsong@oasis.rad.upenn.edu
Abstract:An imaging technique is described that allows the reconstruction of a series of images at high temporal rates, while simultaneously providing images at high spatial resolution. The method allows one to arbitrarily choose from among several combinations of temporal/spatial resolutions during postprocessing. This flexibility is accomplished by strategically interleaving multiple undersampled projection reconstruction datasets (or subapertures), in which each set can be used to reconstruct a high temporal resolution image. Images with increasingly higher spatial resolutions can subsequently be formed by combining two or more subaperture datasets. The technique is demonstrated in vivo to assess the kinetics of contrast enhancement and to visualize the architectural features of suspicious breast lesions.
Keywords:subaperture imaging  projection reconstruction  dynamic contrast  breast imaging
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