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Abstract #2536

Golden Angle Radial Imaging for Improved Visualisation of Initial Stages of Inhalation in Dynamic 3He Lung MRI

Helen Marshall1, Salma Ajraoui1, James M. Wild1

1Academic Unit of Radiology, University of Sheffield, Sheffield, South Yorkshire, United Kingdom

The study of ventilation dynamics with hyperpolarised 3He requires a fast imaging sequence to capture the flow of contrast into the lungs. Radial acquisition, among other sequences, has previously been demonstrated for this purpose. However, images from a standard radial acquisition are constrained to a fixed resolution determined at the acquisition stage. Here golden angle radial sampling was used to image the inhalation of hyperpolarised 3He and compared to a standard, sequential radial acquisition. Golden angle radial imaging enabled reconstruction of the dynamic dataset at any chosen spatio-temporal resolution, providing improved visualisation of the initial stages of inhalation.