Ultrasound Methods: Probe Velocity

We are performing this study to see if moving an ultrasound probe at different speeds influences measurements derived from the produced images. Creating images over an extended distance, known as panoramic ultrasound scanning, is reliant upon proper operator technique. Thus, it is important to understand what factors may influence the quality of the panoramic images. We will compare the measurements derived from the images at three distinct speeds on each of three muscle groups to determine if there are variations when the speed of scanning changes.

We expect that you will be involved in this research study for a single visit. We will review this consent form in the beginning of the visit, then will proceed with the study if you agree to participate. The study visit is expected to last approximately 30 minutes. During the visit, we will perform three ultrasound scans on the rectus femoris, vastus lateralis, and Achilles tendon. The scans will occur at a normal, fast, and slow velocity, resulting in nine images being obtained from you. The order of the locations and the order of the velocity of the scans will be randomized (decided by chance) for each participant.

Inclusion Qualifications:

Ages of 18 and 50 years old.
Do not have any health-related conditions, diseases, or previous injuries that currently affect your lower extremities.

Exclusion Qualifications:

You may not participate in this research opportunity if any of the following applies to you:

Current lower-limb musculoskeletal injury or pain (e.g., strain, tendinopathy, recent fracture, joint inflammation)
Recent trauma to the lower limbs, including bruising (e.g., contusions, blunt force injury, hematoma)
Lower-limb amputation
Prior surgery to the lower extremities within the past 6 months
Known neuromuscular or connective tissue disorders
Body mass index ≥ 35 kg/m²
Skin conditions or open wounds at imaging sites
Inability to lie comfortably in supine or prone positions for approximately 30 minutes
Pregnancy
Unwillingness to refrain from moderate-to-vigorous physical activity for 24 hours prior to data collection
Lack of reliable transportation to the University of Central Florida for study visits

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