The objective of the THYMAL 01 pilot study is to evaluate the Sound Blade Imaging System in subjects with benign thyroid nodules undergoing standard-of-care ultrasound imaging.

Inclusion Criteria:

• Participants must be ≥ 18 years of age
• Able and willing to sign informed consent
• Known thyroid nodule demonstrated on a prior thyroid US and is undergoing active surveillance of the nodule with serial USs

Exclusion Criteria:

• Unable to lay flat for 15 minutes
• Active neck wounds, dressings, or skin conditions that would interfere with neck US (e.g., preclude transducer placement)
• Cervical spine or back disease that would prevent neck extension and would hinder the ability to obtain accurate thyroid US images
• Previous thyroid surgeries, radiation of face and neck
• Known inflammatory thyroid diseases or thyroiditis (e.g., Graves, Hashimoto)

This is an internal feasibility study at this point.