QMRITools`CardiacTools`
QMRITools`CardiacTools`

HelixAngleCalc

HelixAngleCalc[eigenvectors, mask, vox] calculates the helix angle matrix of cardiac data using only a left ventricle mask. HelixAngleCalc[eigenvectors, mask, maskp, vox] calculates the helix angle matrix of cardiac data using only a left ventricle mask, and a maskp for visualization. HelixAngleCalc[eigenvectors, mask, centerpoint, vec, inout, vox] calculates the helix angle matrix of cardiac data using only a left ventricle mask. HelixAngleCalc[eigenvectors, mask, maskp, centerpoint, vec, inout, vox] calculates the helix angle matrix of cardiac data using a left vantricle mask and a maskp for visualization. eigenvectors are the tensor eigenvectors calculated with EigenvecCalc. mask is a mask of the left ventricle. maskp is a mask used for visualization. vox is the voxels size, {slice, x, y}. The folowing values are calculated automaticlay Using CentralAxes but can also be provided as an input. centerpoint is the center of each slice calculated with CentralAxes. inout is the inner and outer radius calcualted with CentralAxes. vec is the vector describin the central axes of the heart, calculated with CentralAxes. Output is het fiber angle matrix FAM = {9, slice, x, y} or {FAM, plot}. The angles are in degrees. HelixAngleCalc[] is based on DOI: 10.1186/1532-429X-17-S1-P15.

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