Information from dynamic length changes improves reliability of static ultrasound fascicle length measurements
Purpose Various strategies for improving reliability of fascicle identification on ultrasound images are used in practice, yet these strategies are untested for effectiveness. Studies suggest that the largest part of differences between fascicle lengths on one image are attributed to the error on th...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
PeerJ Inc.
2017-12-01
|
| Series: | PeerJ |
| Subjects: | |
| Online Access: | https://peerj.com/articles/4164.pdf |
| _version_ | 1797425752061247488 |
|---|---|
| author | Jeroen Aeles Glen A. Lichtwark Sietske Lenchant Liesbeth Vanlommel Tijs Delabastita Benedicte Vanwanseele |
| author_facet | Jeroen Aeles Glen A. Lichtwark Sietske Lenchant Liesbeth Vanlommel Tijs Delabastita Benedicte Vanwanseele |
| author_sort | Jeroen Aeles |
| collection | DOAJ |
| description | Purpose Various strategies for improving reliability of fascicle identification on ultrasound images are used in practice, yet these strategies are untested for effectiveness. Studies suggest that the largest part of differences between fascicle lengths on one image are attributed to the error on the initial image. In this study, we compared reliability results between different strategies. Methods Static single-image recordings and image sequence recordings during passive ankle rotations of the medial gastrocnemius were collected. Images were tracked by three different raters. We compared results from uninformed fascicle identification (UFI) and results with information from dynamic length changes, or data-informed tracking (DIT). A second test compared tracking of image sequences of either fascicle shortening (initial-long condition) or fascicle lengthening (initial-short condition). Results Intra-class correlations (ICC) were higher for the DIT compared to the UFI, yet yielded similar standard error of measurement (SEM) values. Between the initial-long and initial-short conditions, similar ICC values, coefficients of multiple determination, mean squared errors, offset-corrected mean squared errors and fascicle length change values were found for the DIT, yet with higher SEM values and greater absolute fascicle length differences between raters on the first image in the initial-long condition and on the final image in the initial-short condition. Conclusions DIT improves reliability of fascicle length measurements, without lower SEM values. Fascicle length on the initial image has no effect on subsequent tracking results. Fascicles on ultrasound images should be identified by a single rater and care should be taken when comparing absolute fascicle lengths between studies. |
| first_indexed | 2024-03-09T08:20:45Z |
| format | Article |
| id | doaj.art-72f05c6ffaf947df9f10c90e0327c3af |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T08:20:45Z |
| publishDate | 2017-12-01 |
| publisher | PeerJ Inc. |
| record_format | Article |
| series | PeerJ |
| spelling | doaj.art-72f05c6ffaf947df9f10c90e0327c3af2023-12-02T21:50:34ZengPeerJ Inc.PeerJ2167-83592017-12-015e416410.7717/peerj.4164Information from dynamic length changes improves reliability of static ultrasound fascicle length measurementsJeroen Aeles0Glen A. Lichtwark1Sietske Lenchant2Liesbeth Vanlommel3Tijs Delabastita4Benedicte Vanwanseele5Department of Kinesiology, KU Leuven, Leuven, BelgiumSchool of Human Movement Studies, University of Queensland, Brisbane, AustraliaDepartment of Kinesiology, KU Leuven, Leuven, BelgiumDepartment of Kinesiology, KU Leuven, Leuven, BelgiumDepartment of Kinesiology, KU Leuven, Leuven, BelgiumDepartment of Kinesiology, KU Leuven, Leuven, BelgiumPurpose Various strategies for improving reliability of fascicle identification on ultrasound images are used in practice, yet these strategies are untested for effectiveness. Studies suggest that the largest part of differences between fascicle lengths on one image are attributed to the error on the initial image. In this study, we compared reliability results between different strategies. Methods Static single-image recordings and image sequence recordings during passive ankle rotations of the medial gastrocnemius were collected. Images were tracked by three different raters. We compared results from uninformed fascicle identification (UFI) and results with information from dynamic length changes, or data-informed tracking (DIT). A second test compared tracking of image sequences of either fascicle shortening (initial-long condition) or fascicle lengthening (initial-short condition). Results Intra-class correlations (ICC) were higher for the DIT compared to the UFI, yet yielded similar standard error of measurement (SEM) values. Between the initial-long and initial-short conditions, similar ICC values, coefficients of multiple determination, mean squared errors, offset-corrected mean squared errors and fascicle length change values were found for the DIT, yet with higher SEM values and greater absolute fascicle length differences between raters on the first image in the initial-long condition and on the final image in the initial-short condition. Conclusions DIT improves reliability of fascicle length measurements, without lower SEM values. Fascicle length on the initial image has no effect on subsequent tracking results. Fascicles on ultrasound images should be identified by a single rater and care should be taken when comparing absolute fascicle lengths between studies.https://peerj.com/articles/4164.pdfInter-raterIntra-raterRepeatabilityMuscle |
| spellingShingle | Jeroen Aeles Glen A. Lichtwark Sietske Lenchant Liesbeth Vanlommel Tijs Delabastita Benedicte Vanwanseele Information from dynamic length changes improves reliability of static ultrasound fascicle length measurements PeerJ Inter-rater Intra-rater Repeatability Muscle |
| title | Information from dynamic length changes improves reliability of static ultrasound fascicle length measurements |
| title_full | Information from dynamic length changes improves reliability of static ultrasound fascicle length measurements |
| title_fullStr | Information from dynamic length changes improves reliability of static ultrasound fascicle length measurements |
| title_full_unstemmed | Information from dynamic length changes improves reliability of static ultrasound fascicle length measurements |
| title_short | Information from dynamic length changes improves reliability of static ultrasound fascicle length measurements |
| title_sort | information from dynamic length changes improves reliability of static ultrasound fascicle length measurements |
| topic | Inter-rater Intra-rater Repeatability Muscle |
| url | https://peerj.com/articles/4164.pdf |
| work_keys_str_mv | AT jeroenaeles informationfromdynamiclengthchangesimprovesreliabilityofstaticultrasoundfasciclelengthmeasurements AT glenalichtwark informationfromdynamiclengthchangesimprovesreliabilityofstaticultrasoundfasciclelengthmeasurements AT sietskelenchant informationfromdynamiclengthchangesimprovesreliabilityofstaticultrasoundfasciclelengthmeasurements AT liesbethvanlommel informationfromdynamiclengthchangesimprovesreliabilityofstaticultrasoundfasciclelengthmeasurements AT tijsdelabastita informationfromdynamiclengthchangesimprovesreliabilityofstaticultrasoundfasciclelengthmeasurements AT benedictevanwanseele informationfromdynamiclengthchangesimprovesreliabilityofstaticultrasoundfasciclelengthmeasurements |