Diffusion-tensor MRI tractography has been applied to characterize skeletal muscle architecture and diffusion characteristics. Ideally, tracking would occur completely for accurate length, angle, curvature, and diffusion property estimation of a bundle of fibers. In practice, it is desirable to end tracts early if poor quality data is encountered and tract termination settings can influence the balance between tract completeness and desirable exclusion of inaccurate tract regions. This work examines the effect of applying a range of fractional-anisotropy and intersegment-angle tract-termination thresholds on muscle architecture and diffusion estimates, and fiber polynomial fit residuals.
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