Comparison of measurements of medial gastrocnemius architectural parameters from ultrasound and diffusion tensor images

Bolsterlee, Bart; Veeger, H.E.J.; Helm, F.C.T. van der; Gandevia, Simon C.; Herbert, Robert D.

doi:10.1016/j.jbiomech.2015.01.012

Cited by 85 publications

(88 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Misalignment of the ultrasound probe with the plane of the fascicles has been shown to result in errors in fascicle length measures (0.4mm per degree of misalignment) using T-US (Bolsterlee et al, 2016). On average, ultrasound images taken of the medial gastrocnemius muscle were found to be misaligned with the fascicles by 5.5° (Bolsterlee et al, 2016; Bolsterlee et al, 2015) indicating an average error of 2.2mm; this error is comparable to the absolute error observed in our phantom measurements (2.2±1.3mm). Our study demonstrates that probe misalignment during EFOV-US does not yield significantly higher error than in T-US.…”

Section: Discussionsupporting

confidence: 68%

Demonstration of extended field-of-view ultrasound’s potential to increase the pool of muscles for which in vivo fascicle length is measurable

Adkins

Franks

Murray

2017

Journal of Biomechanics

View full text Add to dashboard Cite

Static, B-mode ultrasound is the most common method of measuring fascicle length in vivo. However, most forearm muscles have fascicles that are longer than the field-of-view of traditional ultrasound (T-US). As such, little work has been done to quantify in vivo forearm muscle architecture. The extended field-of-view ultrasound (EFOV-US) method, which fits together a sequence of B-mode images taken from a continuous ultrasound scan, facilitates direct measurements of longer, curved fascicles. Here, we test the validity and reliability of the EFOV-US method for obtaining fascicle lengths in the extensor carpi ulnaris (ECU). Fascicle lengths from images of the ECU captured in vivo with EFOV-US were compared to lengths from a well-established method, T-US. Images were collected in a joint posture that shortens the ECU such that entire fascicle lengths were captured within a single T-US image. Resulting measurements were not significantly different (p = 0.18); a Bland-Altman test demonstrated their agreement. A novice sonographer implemented EFOV-US in a phantom and in vivo on the ECU. The novice sonographer’s measurements from the ultrasound phantom indicate that the combined imaging and analysis method is valid (average error = 2.2 ± 1.3 mm) and the in vivo fascicle length measurements demonstrate excellent reliability (ICC = 0.97). To our knowledge, this is the first study to quantify in vivo fascicle lengths of the ECU using any method. The ability to define a muscle’s architecture in vivo using EFOV-US could lead to improvements in diagnosis, model development, surgery guidance, and rehabilitation techniques.

show abstract

Section: Discussionsupporting

confidence: 68%

Demonstration of extended field-of-view ultrasound’s potential to increase the pool of muscles for which in vivo fascicle length is measurable

Adkins

Franks

Murray

2017

Journal of Biomechanics

View full text Add to dashboard Cite

show abstract

“…Bolsterlee et al . compared the L ft measurements obtained from DT‐MRI with fascicle length measurements from US, and found that they agreed to within a mean difference of 3 mm, indicating good agreement; however, they also observed a relatively poor precision of 10 mm (~20% of the mean fascicle length). Heemskerk et al .…”

Section: Dti Data Analysis For Muscle Structural Characterizationmentioning

confidence: 86%

“…Bolsterlee et al . observed a relative underestimation of US‐measured values of θ compared with DT‐MRI, but only directly under the US probe head; this suggested that tissue deformation associated with the US acquisition may have been the source of disagreement. Heemskerk et al .…”

Section: Dti Data Analysis For Muscle Structural Characterizationmentioning

confidence: 99%

Skeletal muscle diffusion tensor‐MRI fiber tracking: rationale, data acquisition and analysis methods, applications and future directions

et al. 2016

View full text Add to dashboard Cite

The mechanical functions of muscles are generating force and actuating movement by shortening or lengthening under load. These functions are influenced, in part, by the internal arrangement of muscle fibers with respect to the muscle’s mechanical line of action. This property is known as muscle architecture. In this review, we describe the use of diffusion-tensor (DT-) MRI muscle fiber tracking for studying muscle architecture. In the first section, the importance of skeletal muscle architecture to function is discussed. Also, traditional and complementary methods for assessing muscle architecture (brightness-mode ultrasound imaging and cadaver analysis) are presented. Next, DT-MRI is introduced and the structural basis for the reduced and anisotropic diffusion of water in muscle is discussed. The third section discusses issues related to the acquisition of skeletal muscle DT-MRI data and presents recommendations for optimal strategies. The fourth section discusses methods for pre-processing DT-MRI data, the available approaches for calculating the diffusion tensor and seeding and propagating fiber tracts, and analyzing the tracking results to measure structural properties pertinent to muscle biomechanics. Lastly, examples of how DT-MRI fiber tracking has been used to provide new insights into how muscle function are presented and important future research directions are highlighted.

show abstract

“…Of course ultrasound provides only a two-dimensional image, therefore the fascicle length will be underestimated in the case that the digitized fascicles do not lie in the image plane. Studies investigating the validity of the ultrasound-based determination of fascicle length reported an acceptable validity for VL and vastus intermedius [42] as well as for GM [43]. In general, the ultrasound-based methodology shows a systematic underestimation of the VL fascicle length with average differences of approximately 6% [42].…”

Section: Discussionmentioning

confidence: 99%

Operating length and velocity of human M. vastus lateralis fascicles during vertical jumping

et al. 2017

View full text Add to dashboard Cite

Humans achieve greater jump height during a counter-movement jump (CMJ) than in a squat jump (SJ). However, the crucial difference is the mean mechanical power output during the propulsion phase, which could be determined by intrinsic neuro-muscular mechanisms for power production. We measured M. vastus lateralis (VL) fascicle length changes and activation patterns and assessed the force–length, force–velocity and power–velocity potentials during the jumps. Compared with the SJ, the VL fascicles operated on a more favourable portion of the force–length curve (7% greater force potential, i.e. fraction of VL maximum force according to the force–length relationship) and more disadvantageous portion of the force–velocity curve (11% lower force potential, i.e. fraction of VL maximum force according to the force–velocity relationship) in the CMJ, indicating a reciprocal effect of force–length and force–velocity potentials for force generation. The higher muscle activation (15%) could therefore explain the moderately greater jump height (5%) in the CMJ. The mean fascicle-shortening velocity in the CMJ was closer to the plateau of the power–velocity curve, which resulted in a greater (15%) power–velocity potential (i.e. fraction of VL maximum power according to the power–velocity relationship). Our findings provide evidence for a cumulative effect of three different mechanisms—i.e. greater force–length potential, greater power–velocity potential and greater muscle activity—for an advantaged power production in the CMJ contributing to the marked difference in mean mechanical power (56%) compared with SJ.

show abstract

Comparison of measurements of medial gastrocnemius architectural parameters from ultrasound and diffusion tensor images

Cited by 85 publications

References 22 publications

Demonstration of extended field-of-view ultrasound’s potential to increase the pool of muscles for which in vivo fascicle length is measurable

Demonstration of extended field-of-view ultrasound’s potential to increase the pool of muscles for which in vivo fascicle length is measurable

Skeletal muscle diffusion tensor‐MRI fiber tracking: rationale, data acquisition and analysis methods, applications and future directions

Operating length and velocity of human M. vastus lateralis fascicles during vertical jumping

Contact Info

Product

Resources

About