I am currently developing processing and visualisation tools to improve cardiac MR including: cardiac diffusion tensor imaging, cardiac myocyte tractography, and multi-modality image registration.
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Analysis software tool developed in MATLAB. It outputs multiple DTI maps including: fractional anisotropy, mean diffusivity, tensor mode, helical angle and secondary eigenvector orientation in relation to the local cardiac coordinates. The processing includes multiple steps: data quality assessment, in-plane registration of different averages, and segmentation tools.
Short-axis plane of the left ventricle showing the mean orientation of the myocyctes for each MR voxel. The cylindrical glyphs are colour-coded according to their helical angle. This data was acquired in vivo and it is shown from different angles.
Left ventricular tractograms of a porcine heart. The tracts are colour coded according to the local helical angle and shown from different angles and different levels of angle threshold. This data was acquired ex vivo.
Visualisation of the entire diffusion tensor with superquadric glyphs. This particular set of images show an horizontal long-axis plane of the heart, viewed from different angles. This data was acquired in vivo.
Short-axis data acquired in vivo in a subject with hypertrophic cardiomyopathy. The secondary eigenvector direction is represented by white cylinders superimposed in the superquadric glyphs showing the entire diffusion tensor. The secondary eigenvectors are in general oriented at low angles to the short-axis plane.
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