Holmes, J. H. & Howry, D. H. Ultrasonic diagnosis of abdominal disease. Am. J. Dig. Dis. 8 , 12–32 (1963).

Article CAS PubMed Google Scholar

Howry, D. H. & Bliss, W. R. Ultrasonic visualization of soft tissue structures of the body. J. Lab. Clin. Med. 40 , 579–592 (1952).

CAS PubMed Google Scholar

Goldberg, B. B., Gramiak, R. & Freimanis, A. K. Early history of diagnostic ultrasound: the role of American radiologists. AJR Am. J. Roentgenol. 160 , 189–194 (1993).

Article CAS PubMed Google Scholar

Holm, H. H. & Mortensen, T. Ultrasonic scanning in diagnosis of abdominal disease. Acta Chir. Scand. 134 , 333–341 (1968).

CAS PubMed Google Scholar

Howry, D. H., Holmes, J. H., Cushman, C. R. & Posakony, G. J. Ultrasonic visualization of living organs and tissues; with observations on some disease processes. Geriatrics 10 , 123–128 (1955).

CAS PubMed Google Scholar

Holm, H. H. Ultrasonic scanning in the diagnosis of space-occupying lesions of the upper abdomen. Br. J. Radiol.…