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Gangadhar, K., Hippe, D. S., Thiel, J. & Dighe, M. Impact of image orientation on measurements of thyroid nodule stiffness using shear wave elastography. J. Ultrasound Med. 35, 1661–1667 (2016). Brezak, R., Hippe, D., Thiel, J. & Dighe, M. K. Variability in stiffness assessment in a thyroid nodule using shear wave imaging. Ultrasound Q. 31, 243–249 (2015).

Localized scleroderma is confined to the skin and, sometimes, the muscle beneath it. Systemic sclerosis also involves the blood vessels and major organs. Yoo, L., Gupta, V., Lee, C., Kavehpore, P. & Demer, J. L. Viscoelastic properties of bovine orbital connective tissue and fat: constitutive models. Biomech. Model. Mechanobiol. 10, 901–914 (2012). Neutrophils: These are also known as granulocytes and provide an early response to inflammation. They kill pathogens but also die as a result.Ozawa, H., Matsumoto, T., Ohashi, T., Sato, M. & Kokubun, S. Comparison of spinal cord gray matter and white matter softness: measurement by pipette aspiration method. J. Neurosurg. Spine 95, 221–224 (2001). Osteogenesis imperfecta . Osteogenesis imperfecta is a condition of brittle bones, low muscle mass, and lax joints and ligaments. There are several types of this condition. Specific symptoms depend on the specific type and may include: Lyshchik, A. et al. Elastic moduli of thyroid tissues under compression. Ultrason. Imaging 110, 101–110 (2005).