Data from: A technical note on variable inter-frame interval as a cause of non-physiological experimental artefacts in ultrasound - Dryad
Data from: A technical note on variable inter-frame interval as a cause of non-physiological experimental artefacts in ultrasound
Miguez D, Hodson-Tole EF, Loram ID, Harding PJ
DOI: http://dx.doi.org/10.5061/dryad.550sg
Full description of the uploaded data files
Readme - FileInfo Explanations.txt (3.458 Kb)
Effects of variable interframe interval on data synchronisation
Results of analysis of ultrasound image sequence, recorded during low level electrical stimulation of motor nerve. Including associated frame time and electromyographic data. Full details available in the ReadMe file.
AllTelemedData.txt (4.325 Mb)
Frame times from two timestamping approaches
Frame times recorded from ultrasound imaging device using hardware and software timestamping techniques. Full details available in the ReadMe file.
Hardware_vs_Software_FrameTimes.txt (56.38 Kb)
Software recorded interframe intervals
Inter-frame intervals from ultrasound imaging device, recorded using software timestamping approach described in the manuscript. Full details of file contents are described in the ReadMe file.
SoftwareTimeStamps.txt (2.653 Kb)
Ultrasound video skeletal muscle movements
B-mode ultrasound video of lower leg muscles of one participant, recorded (approx. 80 fps) using a LS128 (Telemed, Ultrasound Medical Systems, Italy) ultrasound imaging device. The video was recorded whil low amplitude (12 mA) electrical stimulation was delivered (1 Hz) to the motor nerve (Tibial nerve).
Video_Example_120mA_80fps.zip (342.2 Mb)
Miguez D, Hodson-Tole EF, Loram I, Harding PJ (2017) A technical note on variable inter-frame interval as a cause of non-physiological experimental artefacts in ultrasound. Royal Society Open Science 4(5): 170245. http://dx.doi.org/10.1098/rsos.170245
Miguez D, Hodson-Tole EF, Loram ID, Harding PJ (2017) Data from: A technical note on variable inter-frame interval as a cause of non-physiological experimental artefacts in ultrasound. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.550sg
skeletal muscle, synchronisation, temporal behaviour, tracking, tendon, frame timing correction, medical imaging
Ultrasound imaging is a well-recognised technique for the study of static tissues but its suitability for studying tissue dynamics depends upon accurate frame time information, which may not always be available to users. Here we present methods to quantify the inter-frame interval (IFI) variability, and evaluate different procedures for collecting temporal information from two ultrasound-imaging devices. The devices tested exhibited variable IFIs that could only be confirmed by direct measures of timing signals, available by means of electrical signals (triggers) and/or temporal information contained in the software used for the ultrasound data collection. Interpolating frame-by-frame measures of dynamic changes within image sequences using individual IFI values provided improved synchronisation between measures of skeletal muscle movement and activation; validating ultrasound as a valuable technique for the study of musculoskeletal tissue dynamics, when correctly implemented.
Data from: A technical note on variable inter-frame interval as a cause of non-physiological experimental artefacts in ultrasound - Dryad
Data from: A technical note on variable inter-frame interval as a cause of non-physiological experimental artefacts in ultrasound
Miguez D, Hodson-Tole EF, Loram ID, Harding PJ
DOI: http://dx.doi.org/10.5061/dryad.550sg
Full description of the uploaded data files
Readme - FileInfo Explanations.txt (3.458 Kb)
Effects of variable interframe interval on data synchronisation
Results of analysis of ultrasound image sequence, recorded during low level electrical stimulation of motor nerve. Including associated frame time and electromyographic data. Full details available in the ReadMe file.
AllTelemedData.txt (4.325 Mb)
Frame times from two timestamping approaches
Frame times recorded from ultrasound imaging device using hardware and software timestamping techniques. Full details available in the ReadMe file.
Hardware_vs_Software_FrameTimes.txt (56.38 Kb)
Software recorded interframe intervals
Inter-frame intervals from ultrasound imaging device, recorded using software timestamping approach described in the manuscript. Full details of file contents are described in the ReadMe file.
SoftwareTimeStamps.txt (2.653 Kb)
Ultrasound video skeletal muscle movements
B-mode ultrasound video of lower leg muscles of one participant, recorded (approx. 80 fps) using a LS128 (Telemed, Ultrasound Medical Systems, Italy) ultrasound imaging device. The video was recorded whil low amplitude (12 mA) electrical stimulation was delivered (1 Hz) to the motor nerve (Tibial nerve).
Video_Example_1
20mA_80fps.zip (342.2 Mb)
Miguez D, Hodson-Tole EF, Loram I, Harding PJ (2017) A technical note on variable inter-frame interval as a cause of non-physiological experimental artefacts in ultrasound. Royal Society Open Science 4(5): 170245. http://dx.doi.org/10.1098/rsos.170245
Miguez D, Hodson-Tole EF, Loram ID, Harding PJ (2017) Data from: A technical note on variable inter-frame interval as a cause of non-physiological experimental artefacts in ultrasound. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.550sg
skeletal muscle, synchronisation, temporal behaviour, tracking, tendon, frame timing correction, medical imaging
Ultrasound imaging is a well-recognised technique for the study of static tissues but its suitability for studying tissue dynamics depends upon accurate frame time information, which may not always be available to users. Here we present methods to quantify the inter-frame interval (IFI) variability, and evaluate different procedures for collecting temporal information from two ultrasound-imaging devices. The devices tested exhibited variable IFIs that could only be confirmed by direct measures of timing signals, available by means of electrical signals (triggers) and/or temporal information contained in the software used for the ultrasound data collection. Interpolating frame-by-frame measures of dynamic changes within image sequences using individual IFI values provided improved synchronisation between measures of skeletal muscle movement and activation; validating ultrasound as a valuable technique for the study of musculoskeletal tissue dynamics, when correctly implemented.