Sensitivity analyses of probabilistic and deterministic DTI tractography methodologies for studying arm muscle architecture.

ABSTRACT:

Purpose

To determine the sensitivity profiles of probabilistic and deterministic DTI tractography methods in estimating geometric properties in arm muscle anatomy.

Methods

Spin-echo diffusion-weighted MR images were acquired in the dominant arm of 10 participants. Both deterministic and probabilistic tractography were performed in two different muscle architectures of the parallel-structured biceps brachii (and the pennate-structured flexor carpi ulnaris. Muscle fascicle geometry estimates and number of fascicles were evaluated with respect to tractography turning angle, polynomial fitting order, and SNR. The DTI tractography estimated fascicle lengths were compared with measurements obtained from conventional cadaveric dissection and ultrasound modalities.

Results

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SUBMITTER: Joshi D 

PROVIDER: S-EPMC10841115 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature