Observational studyBMC medical imaging2021
Spatial frequency analysis detects altered tissue organization following hamstring strain injury at time of injury but not return to sport.
Observational study in BMC medical imaging, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 17 citations in OpenAlex.
- Ultrasound-Based Spatial Frequency Analysis Differentiates Patellar Tendon Quality in Tendinopathic and Healthy Participants.Translational journal of the American College of Sports Medicine · 2026Article
- Ultrasound shear wave seeds reduced following hamstring strain injury but not after returning to sport.Insights into imaging · 2024Article
- Reliability of assessing skeletal muscle architecture and tissue organization of the gastrocnemius medialis and vastus lateralis muscle using ultrasound and spatial frequency analysis.Frontiers in sports and active living · 2024Article
- Reproducibility of freehand vs. foam cast as well as the intrarater reliability of foam cast ultrasound scans assessing the muscle architecture and tissue organization of the gastrocnemius medialis and vastus lateralis muscles.Frontiers in sports and active living · 2024Article
- Influence of ultrasound machine settings on quantitative measures derived from spatial frequency analysis of muscle tissue.BMC musculoskeletal disorders · 2023Article
- Skeletal Muscle Assessment Using Quantitative Ultrasound: A Narrative Review.Sensors (Basel, Switzerland) · 2023Review
- FRET Visualization of Cyclic Stretch-Activated ERKFrontiers in cell and developmental biology · 2022Article
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundHamstring strain injury (HSI) diagnosis is often corroborated using ultrasound. Spatial frequency analysis (SFA) is a quantitative ultrasound method that has proven useful in characterizing altered tissue organization. The purpose of this study was to determine changes in muscular tissue organization using SFA following HSI.
methodsUltrasound B-mode images were captured at time of injury (TOI) and return to sport (RTS) in collegiate athletes who sustained an HSI. Spatial frequency parameters extracted from two-dimensional Fourier Transforms in user-defined regions of interest (ROI) were analyzed. Separate ROIs encompassed injured and adjacent tissue within the same image of the injured limb and mirrored locations in the contralateral limb at TOI. The ROIs for RTS images were drawn to correspond to the injury-matched location determined from TOI imaging. Peak spatial frequency radius (PSFR) and the fascicular banded pattern relative to image background (Mmax%) were compared between injured and adjacent portions within the same image with separate paired t-tests. Within-image differences of SFA parameters in the injured limb were calculated and compared between TOI and RTS with Wilcoxon rank sum tests.
resultsWithin the injured limb at TOI, PSFR differences in injured and healthy regions did not strictly meet statistical significance (p = 0.06), while Mmax% was different between regions (p < 0.001). No differences were observed between regions in the contralateral limb at TOI (PSFR, p = 0.16; Mmax%, p = 0.30). Significant within-image differences in PSFR (p = 0.03) and Mmax% (p = 0.04) at RTS were detected relative to TOI.
conclusionsThese findings are a first step in determining the usefulness of SFA in muscle injury characterization and provide quantitative assessment of both fascicular disruption and edema presence in acute HSI.
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