Doctor with a coronavirus patient's x-ray film https://www.rawpixel.com/image/2293993/free-photo-image-ray-xray-chest-x-rayView licenseRadiology technician, Kristy Garcia uses a shadow test target to demonstrate how 3-dimensional (3D) mammography system… https://www.rawpixel.com/image/8708714/photo-image-shadow-public-domain-womanFree Image from public domain licenseAnatomy: a dissection of the thorax: the anterior thoracic wall. Photograph, ca. 1900. https://www.rawpixel.com/image/13999645/photo-image-person-public-domain-wallFree Image from public domain license